HomeHome Metamath Proof Explorer
Theorem List (p. 393 of 470)
< Previous  Next >
Bad symbols? Try the
GIF version.

Mirrors  >  Metamath Home Page  >  MPE Home Page  >  Theorem List Contents  >  Recent Proofs       This page: Page List

Color key:    Metamath Proof Explorer  Metamath Proof Explorer
(1-29646)
  Hilbert Space Explorer  Hilbert Space Explorer
(29647-31169)
  Users' Mathboxes  Users' Mathboxes
(31170-46948)
 

Theorem List for Metamath Proof Explorer - 39201-39300   *Has distinct variable group(s)
TypeLabelDescription
Statement
 
Theoremcdlemk13 39201* Part of proof of Lemma K of [Crawley] p. 118. Line 13 on p. 119. 𝑂, 𝐷 are k1, f1. (Contributed by NM, 1-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ))) β†’ (π‘‚β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π·)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝐷 ∘ ◑𝐹)))))
 
Theoremcdlemkole 39202* Utility lemma. (Contributed by NM, 2-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ))) β†’ (π‘‚β€˜π‘ƒ) ≀ (𝑃 ∨ (π‘…β€˜π·)))
 
Theoremcdlemk14 39203* Part of proof of Lemma K of [Crawley] p. 118. Line 19 on p. 119. 𝑂, 𝐷 are k1, f1. (Contributed by NM, 1-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ))) β†’ (π‘β€˜π‘ƒ) ≀ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝐹 ∘ ◑𝐷))))
 
Theoremcdlemk15 39204* Part of proof of Lemma K of [Crawley] p. 118. Line 21 on p. 119. 𝑂, 𝐷 are k1, f1. (Contributed by NM, 1-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ))) β†’ (π‘β€˜π‘ƒ) ≀ ((𝑃 ∨ (π‘…β€˜πΉ)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝐹 ∘ ◑𝐷)))))
 
Theoremcdlemk16a 39205* Part of proof of Lemma K of [Crawley] p. 118. (Contributed by NM, 3-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐺 ∈ 𝑇) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (((𝑃 ∨ (π‘…β€˜πΊ)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐷)))) ∈ 𝐴 ∧ Β¬ ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐷)))) ≀ π‘Š))
 
Theoremcdlemk16 39206* Part of proof of Lemma K of [Crawley] p. 118. (Contributed by NM, 1-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ))) β†’ (((𝑃 ∨ (π‘…β€˜πΉ)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝐹 ∘ ◑𝐷)))) ∈ 𝐴 ∧ Β¬ ((𝑃 ∨ (π‘…β€˜πΉ)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝐹 ∘ ◑𝐷)))) ≀ π‘Š))
 
Theoremcdlemk17 39207* Part of proof of Lemma K of [Crawley] p. 118. Line 21 on p. 119. 𝑂, 𝐷 are k1, f1. (Contributed by NM, 1-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ))) β†’ (π‘β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΉ)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝐹 ∘ ◑𝐷)))))
 
Theoremcdlemk1u 39208* Part of proof of Lemma K of [Crawley] p. 118. (Contributed by NM, 3-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ))) β†’ (𝑃 ∨ (π‘‚β€˜π‘ƒ)) ≀ ((π·β€˜π‘ƒ) ∨ (π‘…β€˜π·)))
 
Theoremcdlemk5auN 39209* Part of proof of Lemma K of [Crawley] p. 118. (Contributed by NM, 3-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐷 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇 ∧ 𝑋 ∈ 𝑇) ∧ ((π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ (𝐷 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (((π·β€˜π‘ƒ) ∨ (π‘…β€˜π·)) ∧ ((π·β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐷)))) ≀ ((π‘‹β€˜π‘ƒ) ∨ (π‘…β€˜(𝑋 ∘ ◑𝐷))))
 
Theoremcdlemk5u 39210* Part of proof of Lemma K of [Crawley] p. 118. (Contributed by NM, 4-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ ((𝑁 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇 ∧ 𝑋 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ ((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜π‘‹) β‰  (π‘…β€˜π·)))) β†’ ((𝑃 ∨ (π‘‚β€˜π‘ƒ)) ∧ ((πΊβ€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐷)))) ≀ ((π‘‹β€˜π‘ƒ) ∨ (π‘…β€˜(𝑋 ∘ ◑𝐷))))
 
Theoremcdlemk6u 39211* Part of proof of Lemma K of [Crawley] p. 118. Apply dalaw 38235. (Contributed by NM, 4-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ ((𝑁 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇 ∧ 𝑋 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ ((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜π‘‹) β‰  (π‘…β€˜π·)))) β†’ ((𝑃 ∨ (πΊβ€˜π‘ƒ)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐷)))) ≀ ((((πΊβ€˜π‘ƒ) ∨ (π‘‹β€˜π‘ƒ)) ∧ ((π‘…β€˜(𝐺 ∘ ◑𝐷)) ∨ (π‘…β€˜(𝑋 ∘ ◑𝐷)))) ∨ (((π‘‹β€˜π‘ƒ) ∨ 𝑃) ∧ ((π‘…β€˜(𝑋 ∘ ◑𝐷)) ∨ (π‘‚β€˜π‘ƒ)))))
 
Theoremcdlemkj 39212* Part of proof of Lemma K of [Crawley] p. 118. (Contributed by NM, 2-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ = (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐷)))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐺 ∈ 𝑇) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ 𝑍 ∈ 𝑇)
 
TheoremcdlemkuvN 39213* Part of proof of Lemma K of [Crawley] p. 118. Value of the sigma1 (p) function π‘ˆ. (Contributed by NM, 2-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    β‡’   (𝐺 ∈ 𝑇 β†’ (π‘ˆβ€˜πΊ) = (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐷))))))
 
Theoremcdlemkuel 39214* Part of proof of Lemma K of [Crawley] p. 118. Conditions for the sigma1 (p) function to be a translation. TODO: combine cdlemkj 39212? (Contributed by NM, 2-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐺 ∈ 𝑇) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (π‘ˆβ€˜πΊ) ∈ 𝑇)
 
Theoremcdlemkuat 39215* Part of proof of Lemma K of [Crawley] p. 118. (Contributed by NM, 4-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐺 ∈ 𝑇) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘ˆβ€˜πΊ)β€˜π‘ƒ) ∈ 𝐴)
 
Theoremcdlemkuv2 39216* Part of proof of Lemma K of [Crawley] p. 118. Line 16 on p. 119 for i = 1, where sigma1 (p) is π‘ˆ, f1 is 𝐷, and k1 is 𝑂. (Contributed by NM, 2-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐺 ∈ 𝑇) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘ˆβ€˜πΊ)β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐷)))))
 
Theoremcdlemk18 39217* Part of proof of Lemma K of [Crawley] p. 118. Line 22 on p. 119. 𝑁, π‘ˆ, 𝑂, 𝐷 are k, sigma1 (p), k1, f1. (Contributed by NM, 2-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ))) β†’ (π‘β€˜π‘ƒ) = ((π‘ˆβ€˜πΉ)β€˜π‘ƒ))
 
Theoremcdlemk19 39218* Part of proof of Lemma K of [Crawley] p. 118. Line 22 on p. 119. 𝑁, π‘ˆ, 𝑂, 𝐷 are k, sigma1 (p), k1, f1. (Contributed by NM, 2-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ))) β†’ (π‘ˆβ€˜πΉ) = 𝑁)
 
Theoremcdlemk7u 39219* Part of proof of Lemma K of [Crawley] p. 118. Line 5, p. 119 for the sigma1 case. (Contributed by NM, 3-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    &   π‘‰ = (((πΊβ€˜π‘ƒ) ∨ (π‘‹β€˜π‘ƒ)) ∧ ((π‘…β€˜(𝐺 ∘ ◑𝐷)) ∨ (π‘…β€˜(𝑋 ∘ ◑𝐷))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ ((𝑁 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇 ∧ 𝑋 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ 𝑋 β‰  ( I β†Ύ 𝐡) ∧ ((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜π‘‹) β‰  (π‘…β€˜π·)))) β†’ ((π‘ˆβ€˜πΊ)β€˜π‘ƒ) ≀ (((π‘ˆβ€˜π‘‹)β€˜π‘ƒ) ∨ 𝑉))
 
Theoremcdlemk11u 39220* Part of proof of Lemma K of [Crawley] p. 118. Line 17, p. 119, showing Eq. 3 (line 8, p. 119) for the sigma1 (π‘ˆ) case. (Contributed by NM, 4-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    &   π‘‰ = (((πΊβ€˜π‘ƒ) ∨ (π‘‹β€˜π‘ƒ)) ∧ ((π‘…β€˜(𝐺 ∘ ◑𝐷)) ∨ (π‘…β€˜(𝑋 ∘ ◑𝐷))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ ((𝑁 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇 ∧ 𝑋 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ 𝑋 β‰  ( I β†Ύ 𝐡) ∧ ((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜π‘‹) β‰  (π‘…β€˜π·)))) β†’ ((π‘ˆβ€˜πΊ)β€˜π‘ƒ) ≀ (((π‘ˆβ€˜π‘‹)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑋 ∘ ◑𝐺))))
 
Theoremcdlemk12u 39221* Part of proof of Lemma K of [Crawley] p. 118. Line 18, p. 119, showing Eq. 4 (line 10, p. 119) for the sigma1 (π‘ˆ) case. (Contributed by NM, 4-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ ((𝑁 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇 ∧ 𝑋 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ (𝑋 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π‘‹)) ∧ ((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜π‘‹) β‰  (π‘…β€˜π·)))) β†’ ((π‘ˆβ€˜πΊ)β€˜π‘ƒ) = ((𝑃 ∨ (πΊβ€˜π‘ƒ)) ∧ (((π‘ˆβ€˜π‘‹)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑋 ∘ ◑𝐺)))))
 
Theoremcdlemk21N 39222* Part of proof of Lemma K of [Crawley] p. 118. Lines 26-27, p. 119 for i=0 and j=1. (Contributed by NM, 5-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ ((𝑁 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ ((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜πΉ)))) β†’ ((π‘†β€˜πΊ)β€˜π‘ƒ) = ((π‘ˆβ€˜πΊ)β€˜π‘ƒ))
 
Theoremcdlemk20 39223* Part of proof of Lemma K of [Crawley] p. 118. Line 22, p. 119 for the i=2, j=1 case. Note typo on line 22: f should be fi. Our 𝐷, 𝐢, 𝑂, 𝑄, π‘ˆ, 𝑉 represent their f1, f2, k1, k2, sigma1, sigma2. (Contributed by NM, 5-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    &   π‘„ = (π‘†β€˜πΆ)    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ ((𝑁 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ ((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜π·)))) β†’ ((π‘ˆβ€˜πΆ)β€˜π‘ƒ) = (π‘„β€˜π‘ƒ))
 
Theoremcdlemkoatnle-2N 39224* Utility lemma. (Contributed by NM, 2-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘„β€˜π‘ƒ) ∈ 𝐴 ∧ Β¬ (π‘„β€˜π‘ƒ) ≀ π‘Š))
 
Theoremcdlemk13-2N 39225* Part of proof of Lemma K of [Crawley] p. 118. Line 13 on p. 119. 𝑄, 𝐢 are k2, f2. (Contributed by NM, 1-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (π‘„β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΆ)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝐢 ∘ ◑𝐹)))))
 
Theoremcdlemkole-2N 39226* Utility lemma. (Contributed by NM, 2-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (π‘„β€˜π‘ƒ) ≀ (𝑃 ∨ (π‘…β€˜πΆ)))
 
Theoremcdlemk14-2N 39227* Part of proof of Lemma K of [Crawley] p. 118. Line 19 on p. 119. 𝑄, 𝐢 are k2, f2. (Contributed by NM, 1-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (π‘β€˜π‘ƒ) ≀ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝐹 ∘ ◑𝐢))))
 
Theoremcdlemk15-2N 39228* Part of proof of Lemma K of [Crawley] p. 118. Line 21 on p. 119. 𝑄, 𝐢 are k2, f2. (Contributed by NM, 1-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (π‘β€˜π‘ƒ) ≀ ((𝑃 ∨ (π‘…β€˜πΉ)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝐹 ∘ ◑𝐢)))))
 
Theoremcdlemk16-2N 39229* Part of proof of Lemma K of [Crawley] p. 118. (Contributed by NM, 1-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (((𝑃 ∨ (π‘…β€˜πΉ)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝐹 ∘ ◑𝐢)))) ∈ 𝐴 ∧ Β¬ ((𝑃 ∨ (π‘…β€˜πΉ)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝐹 ∘ ◑𝐢)))) ≀ π‘Š))
 
Theoremcdlemk17-2N 39230* Part of proof of Lemma K of [Crawley] p. 118. Line 21 on p. 119. 𝑄, 𝐢 are k2, f2. (Contributed by NM, 1-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (π‘β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΉ)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝐹 ∘ ◑𝐢)))))
 
Theoremcdlemkj-2N 39231* Part of proof of Lemma K of [Crawley] p. 118. (Contributed by NM, 2-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘Œ = (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐢)))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐺 ∈ 𝑇) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ π‘Œ ∈ 𝑇)
 
Theoremcdlemkuv-2N 39232* Part of proof of Lemma K of [Crawley] p. 118. Value of the sigma2 (p) function, given 𝑉. (Contributed by NM, 2-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘‰ = (𝑑 ∈ 𝑇 ↦ (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘‘)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑑 ∘ ◑𝐢))))))    β‡’   (𝐺 ∈ 𝑇 β†’ (π‘‰β€˜πΊ) = (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐢))))))
 
Theoremcdlemkuel-2N 39233* Part of proof of Lemma K of [Crawley] p. 118. Conditions for the sigma2 (p) function to be a translation. TODO: combine cdlemkj 39212? (Contributed by NM, 2-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘‰ = (𝑑 ∈ 𝑇 ↦ (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘‘)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑑 ∘ ◑𝐢))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐺 ∈ 𝑇) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (π‘‰β€˜πΊ) ∈ 𝑇)
 
Theoremcdlemkuv2-2 39234* Part of proof of Lemma K of [Crawley] p. 118. Line 16 on p. 119 for i = 2, where sigma2 (p) is 𝑉, f2 is 𝐢, and k2 is 𝑄. (Contributed by NM, 2-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘‰ = (𝑑 ∈ 𝑇 ↦ (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘‘)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑑 ∘ ◑𝐢))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐺 ∈ 𝑇) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘‰β€˜πΊ)β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐢)))))
 
Theoremcdlemk18-2N 39235* Part of proof of Lemma K of [Crawley] p. 118. Line 22 on p. 119. 𝑁, 𝑉, 𝑄, 𝐢 are k, sigma2 (p), k2, f2. (Contributed by NM, 2-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘‰ = (𝑑 ∈ 𝑇 ↦ (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘‘)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑑 ∘ ◑𝐢))))))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (π‘β€˜π‘ƒ) = ((π‘‰β€˜πΉ)β€˜π‘ƒ))
 
Theoremcdlemk19-2N 39236* Part of proof of Lemma K of [Crawley] p. 118. Line 22 on p. 119. 𝑁, 𝑉, 𝑄, 𝐢 are k, sigma2 (p), k2, f2. (Contributed by NM, 2-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘‰ = (𝑑 ∈ 𝑇 ↦ (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘‘)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑑 ∘ ◑𝐢))))))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (π‘‰β€˜πΉ) = 𝑁)
 
Theoremcdlemk7u-2N 39237* Part of proof of Lemma K of [Crawley] p. 118. Line 5, p. 119 for the sigma2 case. (Contributed by NM, 5-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘‰ = (𝑑 ∈ 𝑇 ↦ (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘‘)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑑 ∘ ◑𝐢))))))    &   π‘ = (((πΊβ€˜π‘ƒ) ∨ (π‘‹β€˜π‘ƒ)) ∧ ((π‘…β€˜(𝐺 ∘ ◑𝐢)) ∨ (π‘…β€˜(𝑋 ∘ ◑𝐢))))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ (𝑋 ∈ 𝑇 ∧ 𝑋 β‰  ( I β†Ύ 𝐡))) ∧ (((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜πΆ) ∧ (π‘…β€˜π‘‹) β‰  (π‘…β€˜πΆ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘‰β€˜πΊ)β€˜π‘ƒ) ≀ (((π‘‰β€˜π‘‹)β€˜π‘ƒ) ∨ 𝑍))
 
Theoremcdlemk11u-2N 39238* Part of proof of Lemma K of [Crawley] p. 118. Line 17, p. 119, showing Eq. 3 (line 8, p. 119) for the sigma2 (𝑍) case. (Contributed by NM, 5-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘‰ = (𝑑 ∈ 𝑇 ↦ (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘‘)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑑 ∘ ◑𝐢))))))    &   π‘ = (((πΊβ€˜π‘ƒ) ∨ (π‘‹β€˜π‘ƒ)) ∧ ((π‘…β€˜(𝐺 ∘ ◑𝐢)) ∨ (π‘…β€˜(𝑋 ∘ ◑𝐢))))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ (𝑋 ∈ 𝑇 ∧ 𝑋 β‰  ( I β†Ύ 𝐡))) ∧ (((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜πΆ) ∧ (π‘…β€˜π‘‹) β‰  (π‘…β€˜πΆ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘‰β€˜πΊ)β€˜π‘ƒ) ≀ (((π‘‰β€˜π‘‹)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑋 ∘ ◑𝐺))))
 
Theoremcdlemk12u-2N 39239* Part of proof of Lemma K of [Crawley] p. 118. Line 18, p. 119, showing Eq. 4 (line 10, p. 119) for the sigma2 (𝑉) case. (Contributed by NM, 5-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘‰ = (𝑑 ∈ 𝑇 ↦ (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘‘)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑑 ∘ ◑𝐢))))))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ (𝑋 ∈ 𝑇 ∧ 𝑋 β‰  ( I β†Ύ 𝐡))) ∧ (((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜πΆ) ∧ (π‘…β€˜π‘‹) β‰  (π‘…β€˜πΆ)) ∧ ((π‘…β€˜πΊ) β‰  (π‘…β€˜π‘‹) ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘‰β€˜πΊ)β€˜π‘ƒ) = ((𝑃 ∨ (πΊβ€˜π‘ƒ)) ∧ (((π‘‰β€˜π‘‹)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑋 ∘ ◑𝐺)))))
 
Theoremcdlemk21-2N 39240* Part of proof of Lemma K of [Crawley] p. 118. Lines 26-27, p. 119 for i=0 and j=2. (Contributed by NM, 5-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘‰ = (𝑑 ∈ 𝑇 ↦ (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘‘)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑑 ∘ ◑𝐢))))))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜πΆ)) ∧ ((π‘…β€˜πΊ) β‰  (π‘…β€˜πΉ) ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘†β€˜πΊ)β€˜π‘ƒ) = ((π‘‰β€˜πΊ)β€˜π‘ƒ))
 
Theoremcdlemk20-2N 39241* Part of proof of Lemma K of [Crawley] p. 118. Line 22, p. 119 for the i=2, j=1 case. Note typo on line 22: f should be fi. Our 𝐷, 𝐢, 𝑂, 𝑄, π‘ˆ, 𝑉 represent their f1, f2, k1, k2, sigma1, sigma2. (Contributed by NM, 5-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘‰ = (𝑑 ∈ 𝑇 ↦ (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘‘)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑑 ∘ ◑𝐢))))))    &   π‘‚ = (π‘†β€˜π·)    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (𝐷 ∈ 𝑇 ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝐢 ∈ 𝑇 ∧ 𝐢 β‰  ( I β†Ύ 𝐡))) ∧ (((π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΆ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘‰β€˜π·)β€˜π‘ƒ) = (π‘‚β€˜π‘ƒ))
 
Theoremcdlemk22 39242* Part of proof of Lemma K of [Crawley] p. 118. Lines 26-27, p. 119 for i=1 and j=2. (Contributed by NM, 5-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘„ = (π‘†β€˜πΆ)    &   π‘‰ = (𝑑 ∈ 𝑇 ↦ (β„©π‘˜ ∈ 𝑇 (π‘˜β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘‘)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑑 ∘ ◑𝐢))))))    &   π‘‚ = (π‘†β€˜π·)    &   π‘ˆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘‚β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ ((𝑁 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ (𝐢 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜πΆ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ)) ∧ ((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜π·)))) β†’ ((π‘ˆβ€˜πΊ)β€˜π‘ƒ) = ((π‘‰β€˜πΊ)β€˜π‘ƒ))
 
Theoremcdlemk30 39243* Part of proof of Lemma K of [Crawley] p. 118. TODO: fix comment. Part of attempt to simplify hypotheses. (Contributed by NM, 17-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝑏 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝑏 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘†β€˜π‘)β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹)))))
 
Theoremcdlemkuu 39244* Convert between function and operation forms of π‘Œ. TODO: Use operation form everywhere. (Contributed by NM, 6-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    &   π‘„ = (π‘†β€˜π·)    &   π‘ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝐷))))))    β‡’   ((𝐷 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇) β†’ (π·π‘ŒπΊ) = (π‘β€˜πΊ))
 
Theoremcdlemk31 39245* Part of proof of Lemma K of [Crawley] p. 118. TODO: fix comment. Part of attempt to simplify hypotheses. (Contributed by NM, 17-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 ∈ 𝑇 ∧ 𝑏 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ 𝐺 ∈ 𝑇) ∧ (((π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝑏 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘π‘ŒπΊ)β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ (((π‘†β€˜π‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝑏)))))
 
Theoremcdlemk32 39246* Part of proof of Lemma K of [Crawley] p. 118. TODO: fix comment. Part of attempt to simplify hypotheses. (Contributed by NM, 17-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 ∈ 𝑇 ∧ 𝑏 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ 𝐺 ∈ 𝑇) ∧ (((π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝑏 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π‘π‘ŒπΊ)β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ (((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹)))) ∨ (π‘…β€˜(𝐺 ∘ ◑𝑏)))))
 
Theoremcdlemkuel-3 39247* Part of proof of Lemma K of [Crawley] p. 118. Conditions for the sigma2 (p) function to be a translation. TODO: combine cdlemkj 39212? (Contributed by NM, 11-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐺 ∈ 𝑇) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ (π·π‘ŒπΊ) ∈ 𝑇)
 
Theoremcdlemkuv2-3N 39248* Part of proof of Lemma K of [Crawley] p. 118. Line 16 on p. 119 for i = 1, where sigma2 (p) is π‘Œ, f1 is 𝐷, and k1 is 𝑂. (Contributed by NM, 6-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐺 ∈ 𝑇) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΊ)) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π·π‘ŒπΊ)β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ (((π‘†β€˜π·)β€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐷)))))
 
Theoremcdlemk18-3N 39249* Part of proof of Lemma K of [Crawley] p. 118. Line 22 on p. 119. 𝑁, π‘Œ, 𝑂, 𝐷 are k, sigma2 (p), k1, f1. (Contributed by NM, 7-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((π·π‘ŒπΉ)β€˜π‘ƒ) = (π‘β€˜π‘ƒ))
 
Theoremcdlemk22-3 39250* Part of proof of Lemma K of [Crawley] p. 118. Lines 26-27, p. 119 for i=1 and j=2. (Contributed by NM, 7-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇) ∧ ((𝑁 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ (𝐢 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜πΆ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ)) ∧ ((π‘…β€˜π·) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜π·)))) β†’ ((π·π‘ŒπΊ)β€˜π‘ƒ) = ((πΆπ‘ŒπΊ)β€˜π‘ƒ))
 
Theoremcdlemk23-3 39251* Part of proof of Lemma K of [Crawley] p. 118. Eliminate the (π‘…β€˜πΆ) β‰  (π‘…β€˜π·) requirement from cdlemk22-3 39250. (Contributed by NM, 7-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (𝐺 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ π‘₯ ∈ 𝑇)) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ ((π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡) ∧ π‘₯ β‰  ( I β†Ύ 𝐡))) ∧ (((π‘…β€˜πΊ) β‰  (π‘…β€˜πΆ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ)) ∧ ((π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜π‘₯) β‰  (π‘…β€˜πΆ)) ∧ ((π‘…β€˜π‘₯) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜π‘₯) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π‘₯)))) β†’ ((π·π‘ŒπΊ)β€˜π‘ƒ) = ((πΆπ‘ŒπΊ)β€˜π‘ƒ))
 
Theoremcdlemk24-3 39252* Part of proof of Lemma K of [Crawley] p. 118. Eliminate the (π‘…β€˜π‘₯) β‰  (π‘…β€˜πΆ) requirement from cdlemk23-3 39251 using (π‘…β€˜πΆ) = (π‘…β€˜π·). (Contributed by NM, 7-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (𝐺 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ π‘₯ ∈ 𝑇)) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ ((π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡) ∧ π‘₯ β‰  ( I β†Ύ 𝐡))) ∧ (((π‘…β€˜πΊ) β‰  (π‘…β€˜πΆ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ)) ∧ ((π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜πΆ) = (π‘…β€˜π·)) ∧ ((π‘…β€˜π‘₯) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜π‘₯) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π‘₯)))) β†’ ((π·π‘ŒπΊ)β€˜π‘ƒ) = ((πΆπ‘ŒπΊ)β€˜π‘ƒ))
 
Theoremcdlemk25-3 39253* Part of proof of Lemma K of [Crawley] p. 118. Eliminate the (π‘…β€˜πΆ) = (π‘…β€˜π·) requirement from cdlemk24-3 39252. (Contributed by NM, 7-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (𝐺 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇 ∧ π‘₯ ∈ 𝑇)) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ ((π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡) ∧ π‘₯ β‰  ( I β†Ύ 𝐡))) ∧ (((π‘…β€˜πΊ) β‰  (π‘…β€˜πΆ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ)) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π·) ∧ ((π‘…β€˜π‘₯) β‰  (π‘…β€˜π·) ∧ (π‘…β€˜π‘₯) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π‘₯)))) β†’ ((π·π‘ŒπΊ)β€˜π‘ƒ) = ((πΆπ‘ŒπΊ)β€˜π‘ƒ))
 
Theoremcdlemk26b-3 39254* Part of proof of Lemma K of [Crawley] p. 118. (Contributed by NM, 14-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝑁 ∈ 𝑇) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘))) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š)) β†’ βˆƒπ‘₯ ∈ 𝑇 ((π‘₯ β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘₯) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘₯) β‰  (π‘…β€˜πΊ)) ∧ (π‘₯π‘ŒπΊ) ∈ 𝑇))
 
Theoremcdlemk26-3 39255* Part of proof of Lemma K of [Crawley] p. 118. Eliminate the π‘₯ requirements from cdlemk25-3 39253. (Contributed by NM, 10-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (𝐺 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇)) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ ((π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡))) ∧ (((π‘…β€˜πΊ) β‰  (π‘…β€˜πΆ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ)) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π·))) β†’ ((π·π‘ŒπΊ)β€˜π‘ƒ) = ((πΆπ‘ŒπΊ)β€˜π‘ƒ))
 
Theoremcdlemk27-3 39256* Part of proof of Lemma K of [Crawley] p. 118. Eliminate the 𝑃 from the conclusion of cdlemk25-3 39253. (Contributed by NM, 10-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐷 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ (𝐺 ∈ 𝑇 ∧ 𝐢 ∈ 𝑇)) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ ((π‘…β€˜πΉ) = (π‘…β€˜π‘) ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐷 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 β‰  ( I β†Ύ 𝐡) ∧ 𝐢 β‰  ( I β†Ύ 𝐡))) ∧ (((π‘…β€˜πΊ) β‰  (π‘…β€˜πΆ) ∧ (π‘…β€˜πΆ) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π·) β‰  (π‘…β€˜πΉ)) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜π·))) β†’ (π·π‘ŒπΊ) = (πΆπ‘ŒπΊ))
 
Theoremcdlemk28-3 39257* Part of proof of Lemma K of [Crawley] p. 118. (Contributed by NM, 14-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ 𝑁 ∈ 𝑇) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘))) β†’ βˆƒπ‘§ ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ 𝑧 = (π‘π‘ŒπΊ)))
 
Theoremcdlemk33N 39258* Part of proof of Lemma K of [Crawley] p. 118. TODO: fix comment. Part of attempt to simplify hypotheses. TODO: not needed, is embodied in cdlemk34 39259. (Contributed by NM, 18-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ 𝑧 = (π‘π‘ŒπΊ)))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝑁 ∈ 𝑇) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ 𝑋 = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ (π‘§β€˜π‘ƒ) = ((π‘π‘ŒπΊ)β€˜π‘ƒ))))
 
Theoremcdlemk34 39259* Part of proof of Lemma K of [Crawley] p. 118. TODO: fix comment. Part of attempt to simplify hypotheses. (Contributed by NM, 18-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ 𝑧 = (π‘π‘ŒπΊ)))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ 𝑁 ∈ 𝑇) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘))) β†’ 𝑋 = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ (π‘§β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ (((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹)))) ∨ (π‘…β€˜(𝐺 ∘ ◑𝑏)))))))
 
Theoremcdlemk29-3 39260* Part of proof of Lemma K of [Crawley] p. 118. TODO: fix comment. (Contributed by NM, 14-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘Œ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ 𝑧 = (π‘π‘ŒπΊ)))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ 𝑁 ∈ 𝑇) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘))) β†’ 𝑋 ∈ 𝑇)
 
Theoremcdlemk35 39261* Part of proof of Lemma K of [Crawley] p. 118. cdlemk29-3 39260 with shorter hypotheses. (Contributed by NM, 18-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ (𝑍 ∨ (π‘…β€˜(𝐺 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ 𝑁 ∈ 𝑇) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘))) β†’ 𝑋 ∈ 𝑇)
 
Theoremcdlemk36 39262* Part of proof of Lemma K of [Crawley] p. 118. TODO: fix comment. (Contributed by NM, 18-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ (𝑍 ∨ (π‘…β€˜(𝐺 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)))) β†’ (π‘‹β€˜π‘ƒ) = π‘Œ)
 
Theoremcdlemk37 39263* Part of proof of Lemma K of [Crawley] p. 118. TODO: fix comment. (Contributed by NM, 18-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ (𝑍 ∨ (π‘…β€˜(𝐺 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)))) β†’ (π‘‹β€˜π‘ƒ) ≀ (𝑃 ∨ (π‘…β€˜πΊ)))
 
Theoremcdlemk38 39264* Part of proof of Lemma K of [Crawley] p. 118. Line 31, p. 119. TODO: derive more directly with r19.23 3238? (Contributed by NM, 19-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ (𝑍 ∨ (π‘…β€˜(𝐺 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ 𝑁 ∈ 𝑇) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘))) β†’ (π‘‹β€˜π‘ƒ) ≀ (𝑃 ∨ (π‘…β€˜πΊ)))
 
Theoremcdlemk39 39265* Part of proof of Lemma K of [Crawley] p. 118. Line 31, p. 119. Trace-preserving property of tau, represented by 𝑋. (Contributed by NM, 19-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ (𝑍 ∨ (π‘…β€˜(𝐺 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ 𝑁 ∈ 𝑇) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘))) β†’ (π‘…β€˜π‘‹) ≀ (π‘…β€˜πΊ))
 
Theoremcdlemk40 39266* TODO: fix comment. (Contributed by NM, 31-Jul-2013.)
𝑋 = (℩𝑧 ∈ 𝑇 πœ‘)    &   π‘ˆ = (𝑔 ∈ 𝑇 ↦ if(𝐹 = 𝑁, 𝑔, 𝑋))    β‡’   (𝐺 ∈ 𝑇 β†’ (π‘ˆβ€˜πΊ) = if(𝐹 = 𝑁, 𝐺, ⦋𝐺 / π‘”β¦Œπ‘‹))
 
Theoremcdlemk40t 39267* TODO: fix comment. (Contributed by NM, 31-Jul-2013.)
𝑋 = (℩𝑧 ∈ 𝑇 πœ‘)    &   π‘ˆ = (𝑔 ∈ 𝑇 ↦ if(𝐹 = 𝑁, 𝑔, 𝑋))    β‡’   ((𝐹 = 𝑁 ∧ 𝐺 ∈ 𝑇) β†’ (π‘ˆβ€˜πΊ) = 𝐺)
 
Theoremcdlemk40f 39268* TODO: fix comment. (Contributed by NM, 31-Jul-2013.)
𝑋 = (℩𝑧 ∈ 𝑇 πœ‘)    &   π‘ˆ = (𝑔 ∈ 𝑇 ↦ if(𝐹 = 𝑁, 𝑔, 𝑋))    β‡’   ((𝐹 β‰  𝑁 ∧ 𝐺 ∈ 𝑇) β†’ (π‘ˆβ€˜πΊ) = ⦋𝐺 / π‘”β¦Œπ‘‹)
 
Theoremcdlemk41 39269* Part of proof of Lemma K of [Crawley] p. 118. TODO: fix comment. (Contributed by NM, 19-Jul-2013.)
π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    β‡’   (𝐺 ∈ 𝑇 β†’ ⦋𝐺 / π‘”β¦Œπ‘Œ = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ (𝑍 ∨ (π‘…β€˜(𝐺 ∘ ◑𝑏)))))
 
Theoremcdlemkfid1N 39270 Lemma for cdlemkfid3N 39274. (Contributed by NM, 29-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝐺 ∈ 𝑇) ∧ ((π‘…β€˜πΊ) β‰  (π‘…β€˜πΉ) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ ((πΉβ€˜π‘ƒ) ∨ (π‘…β€˜(𝐺 ∘ ◑𝐹)))) = (πΊβ€˜π‘ƒ))
 
Theoremcdlemkid1 39271 Lemma for cdlemkid 39285. (Contributed by NM, 24-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (𝑏 ∈ 𝑇 ∧ 𝑏 β‰  ( I β†Ύ 𝐡)))) β†’ (𝑍 ∨ (π‘…β€˜π‘)) = (𝑃 ∨ (π‘…β€˜π‘)))
 
Theoremcdlemkfid2N 39272 Lemma for cdlemkfid3N 39274. (Contributed by NM, 29-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 = 𝑁) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝑏 ∈ 𝑇) ∧ ((π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ 𝑍 = (π‘β€˜π‘ƒ))
 
Theoremcdlemkid2 39273* Lemma for cdlemkid 39285. (Contributed by NM, 24-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ 𝐺 = ( I β†Ύ 𝐡) ∧ (𝑏 ∈ 𝑇 ∧ 𝑏 β‰  ( I β†Ύ 𝐡)))) β†’ ⦋𝐺 / π‘”β¦Œπ‘Œ = 𝑃)
 
Theoremcdlemkfid3N 39274* TODO: is this useful or should it be deleted? (Contributed by NM, 29-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ 𝐹 = 𝑁) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ 𝐺 ∈ 𝑇 ∧ (𝑏 ∈ 𝑇 ∧ 𝑏 β‰  ( I β†Ύ 𝐡))) ∧ ((π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š))) β†’ ⦋𝐺 / π‘”β¦Œπ‘Œ = (πΊβ€˜π‘ƒ))
 
Theoremcdlemky 39275* Part of proof of Lemma K of [Crawley] p. 118. TODO: clean up (π‘π‘ŒπΊ) stuff. 𝑉 represents π‘Œ in cdlemk31 39245. (Contributed by NM, 21-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‰ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)))) β†’ ⦋𝐺 / π‘”β¦Œπ‘Œ = ((𝑏𝑉𝐺)β€˜π‘ƒ))
 
Theoremcdlemkyu 39276* Convert between function and explicit forms. 𝐢 represents 𝑍 in cdlemkuu 39244. TODO: Clean all this up. (Contributed by NM, 21-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   π‘‰ = (𝑑 ∈ 𝑇, 𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑑))))))    &   π‘„ = (π‘†β€˜π‘)    &   πΆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ ((π‘„β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑏))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)))) β†’ ⦋𝐺 / π‘”β¦Œπ‘Œ = ((πΆβ€˜πΊ)β€˜π‘ƒ))
 
Theoremcdlemkyuu 39277* cdlemkyu 39276 with some hypotheses eliminated. TODO: Clean all this up. (Contributed by NM, 21-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   πΆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑏))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)))) β†’ ⦋𝐺 / π‘”β¦Œπ‘Œ = ((πΆβ€˜πΊ)β€˜π‘ƒ))
 
Theoremcdlemk11ta 39278* Part of proof of Lemma K of [Crawley] p. 118. Lemma for Eq. 5, p. 119. 𝐺, 𝐼 stand for g, h. TODO: fix comment. (Contributed by NM, 21-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   πΆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑏))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) ∧ (𝐼 ∈ 𝑇 ∧ 𝐼 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΌ)))) β†’ ⦋𝐺 / π‘”β¦Œπ‘Œ ≀ (⦋𝐼 / π‘”β¦Œπ‘Œ ∨ (π‘…β€˜(𝐼 ∘ ◑𝐺))))
 
Theoremcdlemk19ylem 39279* Lemma for cdlemk19y 39281. (Contributed by NM, 30-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘† = (𝑓 ∈ 𝑇 ↦ (℩𝑖 ∈ 𝑇 (π‘–β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘“)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑓 ∘ ◑𝐹))))))    &   πΆ = (𝑒 ∈ 𝑇 ↦ (℩𝑗 ∈ 𝑇 (π‘—β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜π‘’)) ∧ (((π‘†β€˜π‘)β€˜π‘ƒ) ∨ (π‘…β€˜(𝑒 ∘ ◑𝑏))))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ)))) β†’ ⦋𝐹 / π‘”β¦Œπ‘Œ = (π‘β€˜π‘ƒ))
 
Theoremcdlemk11tb 39280* Part of proof of Lemma K of [Crawley] p. 118. Lemma for Eq. 5, p. 119. 𝐺, 𝐼 stand for g, h. cdlemk11ta 39278 with hypotheses removed. TODO: Can this be proved directly with no quantification? (Contributed by NM, 21-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) ∧ (𝐼 ∈ 𝑇 ∧ 𝐼 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΌ)))) β†’ ⦋𝐺 / π‘”β¦Œπ‘Œ ≀ (⦋𝐼 / π‘”β¦Œπ‘Œ ∨ (π‘…β€˜(𝐼 ∘ ◑𝐺))))
 
Theoremcdlemk19y 39281* cdlemk19 39218 with simpler hypotheses. TODO: Clean all this up. (Contributed by NM, 30-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ)))) β†’ ⦋𝐹 / π‘”β¦Œπ‘Œ = (π‘β€˜π‘ƒ))
 
Theoremcdlemkid3N 39282* Lemma for cdlemkid 39285. (Contributed by NM, 25-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ 𝐺 = ( I β†Ύ 𝐡))) β†’ ⦋𝐺 / π‘”β¦Œπ‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ (π‘§β€˜π‘ƒ) = 𝑃)))
 
Theoremcdlemkid4 39283* Lemma for cdlemkid 39285. (Contributed by NM, 25-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ 𝐺 = ( I β†Ύ 𝐡))) β†’ ⦋𝐺 / π‘”β¦Œπ‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) β†’ 𝑧 = ( I β†Ύ 𝐡))))
 
Theoremcdlemkid5 39284* Lemma for cdlemkid 39285. (Contributed by NM, 25-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ 𝐺 = ( I β†Ύ 𝐡))) β†’ ⦋𝐺 / π‘”β¦Œπ‘‹ ∈ 𝑇)
 
Theoremcdlemkid 39285* The value of the tau function (in Lemma K of [Crawley] p. 118) on the identity relation. (Contributed by NM, 25-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇 ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ 𝐺 = ( I β†Ύ 𝐡))) β†’ ⦋𝐺 / π‘”β¦Œπ‘‹ = ( I β†Ύ 𝐡))
 
Theoremcdlemk35s 39286* Substitution version of cdlemk35 39261. (Contributed by NM, 22-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ 𝑁 ∈ 𝑇) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘))) β†’ ⦋𝐺 / π‘”β¦Œπ‘‹ ∈ 𝑇)
 
Theoremcdlemk35s-id 39287* Substitution version of cdlemk35 39261. (Contributed by NM, 26-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ 𝐺 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘))) β†’ ⦋𝐺 / π‘”β¦Œπ‘‹ ∈ 𝑇)
 
Theoremcdlemk39s 39288* Substitution version of cdlemk39 39265. TODO: Can any commonality with cdlemk35s 39286 be exploited? (Contributed by NM, 23-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡)) ∧ 𝑁 ∈ 𝑇) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘))) β†’ (π‘…β€˜β¦‹πΊ / π‘”β¦Œπ‘‹) ≀ (π‘…β€˜πΊ))
 
Theoremcdlemk39s-id 39289* Substitution version of cdlemk39 39265 with non-identity requirement on 𝐺 removed. TODO: Can any commonality with cdlemk35s 39286 be exploited? (Contributed by NM, 26-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   (((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ 𝐺 ∈ 𝑇 ∧ 𝑁 ∈ 𝑇) ∧ ((𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘))) β†’ (π‘…β€˜β¦‹πΊ / π‘”β¦Œπ‘‹) ≀ (π‘…β€˜πΊ))
 
Theoremcdlemk42 39290* Part of proof of Lemma K of [Crawley] p. 118. TODO: fix comment. (Contributed by NM, 20-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)))) β†’ (⦋𝐺 / π‘”β¦Œπ‘‹β€˜π‘ƒ) = ⦋𝐺 / π‘”β¦Œπ‘Œ)
 
Theoremcdlemk19xlem 39291* Lemma for cdlemk19x 39292. (Contributed by NM, 30-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ ((𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝑁 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ)))) β†’ (⦋𝐹 / π‘”β¦Œπ‘‹β€˜π‘ƒ) = (π‘β€˜π‘ƒ))
 
Theoremcdlemk19x 39292* cdlemk19 39218 with simpler hypotheses. TODO: Clean all this up. (Contributed by NM, 30-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡) ∧ 𝑁 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š)) β†’ (⦋𝐹 / π‘”β¦Œπ‘‹β€˜π‘ƒ) = (π‘β€˜π‘ƒ))
 
Theoremcdlemk42yN 39293* Part of proof of Lemma K of [Crawley] p. 118. TODO: fix comment. (Contributed by NM, 20-Jul-2013.) (New usage is discouraged.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)))) β†’ (⦋𝐺 / π‘”β¦Œπ‘‹β€˜π‘ƒ) = ((𝑃 ∨ (π‘…β€˜πΊ)) ∧ (𝑍 ∨ (π‘…β€˜(𝐺 ∘ ◑𝑏)))))
 
Theoremcdlemk11tc 39294* Part of proof of Lemma K of [Crawley] p. 118. Lemma for Eq. 5, p. 119. 𝐺, 𝐼 stand for g, h. TODO: fix comment. (Contributed by NM, 21-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝑏 ∈ 𝑇 ∧ (𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΊ)) ∧ (𝐼 ∈ 𝑇 ∧ 𝐼 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΌ)))) β†’ (⦋𝐺 / π‘”β¦Œπ‘‹β€˜π‘ƒ) ≀ ((⦋𝐼 / π‘”β¦Œπ‘‹β€˜π‘ƒ) ∨ (π‘…β€˜(𝐼 ∘ ◑𝐺))))
 
Theoremcdlemk11t 39295* Part of proof of Lemma K of [Crawley] p. 118. Eq. 5, line 36, p. 119. 𝐺, 𝐼 stand for g, h. 𝑋 represents tau. (Contributed by NM, 21-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐼 ∈ 𝑇 ∧ 𝐼 β‰  ( I β†Ύ 𝐡))) β†’ (⦋𝐺 / π‘”β¦Œπ‘‹β€˜π‘ƒ) ≀ ((⦋𝐼 / π‘”β¦Œπ‘‹β€˜π‘ƒ) ∨ (π‘…β€˜(𝐼 ∘ ◑𝐺))))
 
Theoremcdlemk45 39296* Part of proof of Lemma K of [Crawley] p. 118. Line 37, p. 119. 𝐺, 𝐼 stand for g, h. 𝑋 represents tau. They do not explicitly mention the requirement (𝐺 ∘ 𝐼) β‰  ( I β†Ύ 𝐡). (Contributed by NM, 22-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐼 ∈ 𝑇 ∧ 𝐼 β‰  ( I β†Ύ 𝐡) ∧ (𝐺 ∘ 𝐼) β‰  ( I β†Ύ 𝐡))) β†’ (⦋(𝐺 ∘ 𝐼) / π‘”β¦Œπ‘‹β€˜π‘ƒ) ≀ ((⦋𝐼 / π‘”β¦Œπ‘‹β€˜π‘ƒ) ∨ (π‘…β€˜πΊ)))
 
Theoremcdlemk46 39297* Part of proof of Lemma K of [Crawley] p. 118. Line 38 (last line), p. 119. 𝐺, 𝐼 stand for g, h. 𝑋 represents tau. (Contributed by NM, 22-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐼 ∈ 𝑇 ∧ 𝐼 β‰  ( I β†Ύ 𝐡) ∧ (𝐺 ∘ 𝐼) β‰  ( I β†Ύ 𝐡))) β†’ (⦋(𝐺 ∘ 𝐼) / π‘”β¦Œπ‘‹β€˜π‘ƒ) ≀ ((⦋𝐺 / π‘”β¦Œπ‘‹β€˜π‘ƒ) ∨ (π‘…β€˜πΌ)))
 
Theoremcdlemk47 39298* Part of proof of Lemma K of [Crawley] p. 118. Line 2, p. 120. 𝐺, 𝐼 stand for g, h. 𝑋 represents tau. (Contributed by NM, 22-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐼 ∈ 𝑇 ∧ 𝐼 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜πΊ) β‰  (π‘…β€˜πΌ))) β†’ (⦋(𝐺 ∘ 𝐼) / π‘”β¦Œπ‘‹β€˜π‘ƒ) = (((⦋𝐺 / π‘”β¦Œπ‘‹β€˜π‘ƒ) ∨ (π‘…β€˜πΌ)) ∧ ((⦋𝐼 / π‘”β¦Œπ‘‹β€˜π‘ƒ) ∨ (π‘…β€˜πΊ))))
 
Theoremcdlemk48 39299* Part of proof of Lemma K of [Crawley] p. 118. Line 4, p. 120. 𝐺, 𝐼 stand for g, h. 𝑋 represents tau. (Contributed by NM, 22-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐼 ∈ 𝑇 ∧ 𝐼 β‰  ( I β†Ύ 𝐡))) β†’ ((⦋𝐺 / π‘”β¦Œπ‘‹ ∘ ⦋𝐼 / π‘”β¦Œπ‘‹)β€˜π‘ƒ) ≀ ((⦋𝐼 / π‘”β¦Œπ‘‹β€˜π‘ƒ) ∨ (π‘…β€˜β¦‹πΊ / π‘”β¦Œπ‘‹)))
 
Theoremcdlemk49 39300* Part of proof of Lemma K of [Crawley] p. 118. Line 5, p. 120. 𝐺, 𝐼 stand for g, h. 𝑋 represents tau. (Contributed by NM, 23-Jul-2013.)
𝐡 = (Baseβ€˜πΎ)    &    ≀ = (leβ€˜πΎ)    &    ∨ = (joinβ€˜πΎ)    &    ∧ = (meetβ€˜πΎ)    &   π΄ = (Atomsβ€˜πΎ)    &   π» = (LHypβ€˜πΎ)    &   π‘‡ = ((LTrnβ€˜πΎ)β€˜π‘Š)    &   π‘… = ((trLβ€˜πΎ)β€˜π‘Š)    &   π‘ = ((𝑃 ∨ (π‘…β€˜π‘)) ∧ ((π‘β€˜π‘ƒ) ∨ (π‘…β€˜(𝑏 ∘ ◑𝐹))))    &   π‘Œ = ((𝑃 ∨ (π‘…β€˜π‘”)) ∧ (𝑍 ∨ (π‘…β€˜(𝑔 ∘ ◑𝑏))))    &   π‘‹ = (℩𝑧 ∈ 𝑇 βˆ€π‘ ∈ 𝑇 ((𝑏 β‰  ( I β†Ύ 𝐡) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜πΉ) ∧ (π‘…β€˜π‘) β‰  (π‘…β€˜π‘”)) β†’ (π‘§β€˜π‘ƒ) = π‘Œ))    β‡’   ((((𝐾 ∈ HL ∧ π‘Š ∈ 𝐻) ∧ (𝐹 ∈ 𝑇 ∧ 𝐹 β‰  ( I β†Ύ 𝐡)) ∧ (𝐺 ∈ 𝑇 ∧ 𝐺 β‰  ( I β†Ύ 𝐡))) ∧ (𝑁 ∈ 𝑇 ∧ (𝑃 ∈ 𝐴 ∧ Β¬ 𝑃 ≀ π‘Š) ∧ (π‘…β€˜πΉ) = (π‘…β€˜π‘)) ∧ (𝐼 ∈ 𝑇 ∧ 𝐼 β‰  ( I β†Ύ 𝐡))) β†’ ((⦋𝐺 / π‘”β¦Œπ‘‹ ∘ ⦋𝐼 / π‘”β¦Œπ‘‹)β€˜π‘ƒ) ≀ ((⦋𝐺 / π‘”β¦Œπ‘‹β€˜π‘ƒ) ∨ (π‘…β€˜β¦‹πΌ / π‘”β¦Œπ‘‹)))
    < Previous  Next >

Page List
Jump to page: Contents  1 1-100 2 101-200 3 201-300 4 301-400 5 401-500 6 501-600 7 601-700 8 701-800 9 801-900 10 901-1000 11 1001-1100 12 1101-1200 13 1201-1300 14 1301-1400 15 1401-1500 16 1501-1600 17 1601-1700 18 1701-1800 19 1801-1900 20 1901-2000 21 2001-2100 22 2101-2200 23 2201-2300 24 2301-2400 25 2401-2500 26 2501-2600 27 2601-2700 28 2701-2800 29 2801-2900 30 2901-3000 31 3001-3100 32 3101-3200 33 3201-3300 34 3301-3400 35 3401-3500 36 3501-3600 37 3601-3700 38 3701-3800 39 3801-3900 40 3901-4000 41 4001-4100 42 4101-4200 43 4201-4300 44 4301-4400 45 4401-4500 46 4501-4600 47 4601-4700 48 4701-4800 49 4801-4900 50 4901-5000 51 5001-5100 52 5101-5200 53 5201-5300 54 5301-5400 55 5401-5500 56 5501-5600 57 5601-5700 58 5701-5800 59 5801-5900 60 5901-6000 61 6001-6100 62 6101-6200 63 6201-6300 64 6301-6400 65 6401-6500 66 6501-6600 67 6601-6700 68 6701-6800 69 6801-6900 70 6901-7000 71 7001-7100 72 7101-7200 73 7201-7300 74 7301-7400 75 7401-7500 76 7501-7600 77 7601-7700 78 7701-7800 79 7801-7900 80 7901-8000 81 8001-8100 82 8101-8200 83 8201-8300 84 8301-8400 85 8401-8500 86 8501-8600 87 8601-8700 88 8701-8800 89 8801-8900 90 8901-9000 91 9001-9100 92 9101-9200 93 9201-9300 94 9301-9400 95 9401-9500 96 9501-9600 97 9601-9700 98 9701-9800 99 9801-9900 100 9901-10000 101 10001-10100 102 10101-10200 103 10201-10300 104 10301-10400 105 10401-10500 106 10501-10600 107 10601-10700 108 10701-10800 109 10801-10900 110 10901-11000 111 11001-11100 112 11101-11200 113 11201-11300 114 11301-11400 115 11401-11500 116 11501-11600 117 11601-11700 118 11701-11800 119 11801-11900 120 11901-12000 121 12001-12100 122 12101-12200 123 12201-12300 124 12301-12400 125 12401-12500 126 12501-12600 127 12601-12700 128 12701-12800 129 12801-12900 130 12901-13000 131 13001-13100 132 13101-13200 133 13201-13300 134 13301-13400 135 13401-13500 136 13501-13600 137 13601-13700 138 13701-13800 139 13801-13900 140 13901-14000 141 14001-14100 142 14101-14200 143 14201-14300 144 14301-14400 145 14401-14500 146 14501-14600 147 14601-14700 148 14701-14800 149 14801-14900 150 14901-15000 151 15001-15100 152 15101-15200 153 15201-15300 154 15301-15400 155 15401-15500 156 15501-15600 157 15601-15700 158 15701-15800 159 15801-15900 160 15901-16000 161 16001-16100 162 16101-16200 163 16201-16300 164 16301-16400 165 16401-16500 166 16501-16600 167 16601-16700 168 16701-16800 169 16801-16900 170 16901-17000 171 17001-17100 172 17101-17200 173 17201-17300 174 17301-17400 175 17401-17500 176 17501-17600 177 17601-17700 178 17701-17800 179 17801-17900 180 17901-18000 181 18001-18100 182 18101-18200 183 18201-18300 184 18301-18400 185 18401-18500 186 18501-18600 187 18601-18700 188 18701-18800 189 18801-18900 190 18901-19000 191 19001-19100 192 19101-19200 193 19201-19300 194 19301-19400 195 19401-19500 196 19501-19600 197 19601-19700 198 19701-19800 199 19801-19900 200 19901-20000 201 20001-20100 202 20101-20200 203 20201-20300 204 20301-20400 205 20401-20500 206 20501-20600 207 20601-20700 208 20701-20800 209 20801-20900 210 20901-21000 211 21001-21100 212 21101-21200 213 21201-21300 214 21301-21400 215 21401-21500 216 21501-21600 217 21601-21700 218 21701-21800 219 21801-21900 220 21901-22000 221 22001-22100 222 22101-22200 223 22201-22300 224 22301-22400 225 22401-22500 226 22501-22600 227 22601-22700 228 22701-22800 229 22801-22900 230 22901-23000 231 23001-23100 232 23101-23200 233 23201-23300 234 23301-23400 235 23401-23500 236 23501-23600 237 23601-23700 238 23701-23800 239 23801-23900 240 23901-24000 241 24001-24100 242 24101-24200 243 24201-24300 244 24301-24400 245 24401-24500 246 24501-24600 247 24601-24700 248 24701-24800 249 24801-24900 250 24901-25000 251 25001-25100 252 25101-25200 253 25201-25300 254 25301-25400 255 25401-25500 256 25501-25600 257 25601-25700 258 25701-25800 259 25801-25900 260 25901-26000 261 26001-26100 262 26101-26200 263 26201-26300 264 26301-26400 265 26401-26500 266 26501-26600 267 26601-26700 268 26701-26800 269 26801-26900 270 26901-27000 271 27001-27100 272 27101-27200 273 27201-27300 274 27301-27400 275 27401-27500 276 27501-27600 277 27601-27700 278 27701-27800 279 27801-27900 280 27901-28000 281 28001-28100 282 28101-28200 283 28201-28300 284 28301-28400 285 28401-28500 286 28501-28600 287 28601-28700 288 28701-28800 289 28801-28900 290 28901-29000 291 29001-29100 292 29101-29200 293 29201-29300 294 29301-29400 295 29401-29500 296 29501-29600 297 29601-29700 298 29701-29800 299 29801-29900 300 29901-30000 301 30001-30100 302 30101-30200 303 30201-30300 304 30301-30400 305 30401-30500 306 30501-30600 307 30601-30700 308 30701-30800 309 30801-30900 310 30901-31000 311 31001-31100 312 31101-31200 313 31201-31300 314 31301-31400 315 31401-31500 316 31501-31600 317 31601-31700 318 31701-31800 319 31801-31900 320 31901-32000 321 32001-32100 322 32101-32200 323 32201-32300 324 32301-32400 325 32401-32500 326 32501-32600 327 32601-32700 328 32701-32800 329 32801-32900 330 32901-33000 331 33001-33100 332 33101-33200 333 33201-33300 334 33301-33400 335 33401-33500 336 33501-33600 337 33601-33700 338 33701-33800 339 33801-33900 340 33901-34000 341 34001-34100 342 34101-34200 343 34201-34300 344 34301-34400 345 34401-34500 346 34501-34600 347 34601-34700 348 34701-34800 349 34801-34900 350 34901-35000 351 35001-35100 352 35101-35200 353 35201-35300 354 35301-35400 355 35401-35500 356 35501-35600 357 35601-35700 358 35701-35800 359 35801-35900 360 35901-36000 361 36001-36100 362 36101-36200 363 36201-36300 364 36301-36400 365 36401-36500 366 36501-36600 367 36601-36700 368 36701-36800 369 36801-36900 370 36901-37000 371 37001-37100 372 37101-37200 373 37201-37300 374 37301-37400 375 37401-37500 376 37501-37600 377 37601-37700 378 37701-37800 379 37801-37900 380 37901-38000 381 38001-38100 382 38101-38200 383 38201-38300 384 38301-38400 385 38401-38500 386 38501-38600 387 38601-38700 388 38701-38800 389 38801-38900 390 38901-39000 391 39001-39100 392 39101-39200 393 39201-39300 394 39301-39400 395 39401-39500 396 39501-39600 397 39601-39700 398 39701-39800 399 39801-39900 400 39901-40000 401 40001-40100 402 40101-40200 403 40201-40300 404 40301-40400 405 40401-40500 406 40501-40600 407 40601-40700 408 40701-40800 409 40801-40900 410 40901-41000 411 41001-41100 412 41101-41200 413 41201-41300 414 41301-41400 415 41401-41500 416 41501-41600 417 41601-41700 418 41701-41800 419 41801-41900 420 41901-42000 421 42001-42100 422 42101-42200 423 42201-42300 424 42301-42400 425 42401-42500 426 42501-42600 427 42601-42700 428 42701-42800 429 42801-42900 430 42901-43000 431 43001-43100 432 43101-43200 433 43201-43300 434 43301-43400 435 43401-43500 436 43501-43600 437 43601-43700 438 43701-43800 439 43801-43900 440 43901-44000 441 44001-44100 442 44101-44200 443 44201-44300 444 44301-44400 445 44401-44500 446 44501-44600 447 44601-44700 448 44701-44800 449 44801-44900 450 44901-45000 451 45001-45100 452 45101-45200 453 45201-45300 454 45301-45400 455 45401-45500 456 45501-45600 457 45601-45700 458 45701-45800 459 45801-45900 460 45901-46000 461 46001-46100 462 46101-46200 463 46201-46300 464 46301-46400 465 46401-46500 466 46501-46600 467 46601-46700 468 46701-46800 469 46801-46900 470 46901-46948
  Copyright terms: Public domain < Previous  Next >