Theorem cdleme50lebi 41788

Description: Part of proof of Lemma D in [Crawley] p. 113. TODO: fix comment. (Contributed by NM, 9-Apr-2013.)

Hypotheses

Ref	Expression
cdlemef50.b	⊢ 𝐵 = (Base‘𝐾)
cdlemef50.l	⊢ ≤ = (le‘𝐾)
cdlemef50.j	⊢ ∨ = (join‘𝐾)
cdlemef50.m	⊢ ∧ = (meet‘𝐾)
cdlemef50.a	⊢ 𝐴 = (Atoms‘𝐾)
cdlemef50.h	⊢ 𝐻 = (LHyp‘𝐾)
cdlemef50.u	⊢ 𝑈 = ((𝑃 ∨ 𝑄) ∧ 𝑊)
cdlemef50.d	⊢ 𝐷 = ((𝑡 ∨ 𝑈) ∧ (𝑄 ∨ ((𝑃 ∨ 𝑡) ∧ 𝑊)))
cdlemefs50.e	⊢ 𝐸 = ((𝑃 ∨ 𝑄) ∧ (𝐷 ∨ ((𝑠 ∨ 𝑡) ∧ 𝑊)))
cdlemef50.f	⊢ 𝐹 = (𝑥 ∈ 𝐵 ↦ if((𝑃 ≠ 𝑄 ∧ ¬ 𝑥 ≤ 𝑊), (℩𝑧 ∈ 𝐵 ∀𝑠 ∈ 𝐴 ((¬ 𝑠 ≤ 𝑊 ∧ (𝑠 ∨ (𝑥 ∧ 𝑊)) = 𝑥) → 𝑧 = (if(𝑠 ≤ (𝑃 ∨ 𝑄), (℩𝑦 ∈ 𝐵 ∀𝑡 ∈ 𝐴 ((¬ 𝑡 ≤ 𝑊 ∧ ¬ 𝑡 ≤ (𝑃 ∨ 𝑄)) → 𝑦 = 𝐸)), ⦋𝑠 / 𝑡⦌𝐷) ∨ (𝑥 ∧ 𝑊)))), 𝑥))

Assertion

Ref	Expression
cdleme50lebi	⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵)) → (𝑋 ≤ 𝑌 ↔ (𝐹‘𝑋) ≤ (𝐹‘𝑌)))

Distinct variable groups:   𝑡,𝑠,𝑥,𝑦,𝑧, ∧   ∨ ,𝑠,𝑡,𝑥,𝑦,𝑧   ≤ ,𝑠,𝑡,𝑥,𝑦,𝑧   𝐴,𝑠,𝑡,𝑥,𝑦,𝑧   𝐵,𝑠,𝑡,𝑥,𝑦,𝑧   𝐷,𝑠,𝑥,𝑦,𝑧   𝑥,𝐸,𝑦,𝑧   𝐻,𝑠,𝑡,𝑥,𝑦,𝑧   𝐾,𝑠,𝑡,𝑥,𝑦,𝑧   𝑃,𝑠,𝑡,𝑥,𝑦,𝑧   𝑄,𝑠,𝑡,𝑥,𝑦,𝑧   𝑈,𝑠,𝑡,𝑥,𝑦,𝑧   𝑊,𝑠,𝑡,𝑥,𝑦,𝑧   𝑋,𝑠,𝑡,𝑥,𝑦,𝑧   𝑌,𝑠,𝑡,𝑥,𝑦,𝑧

Allowed substitution hints:   𝐷(𝑡)   𝐸(𝑡, 𝑠)   𝐹(𝑥, 𝑦, 𝑧, 𝑡, 𝑠)

Proof of Theorem cdleme50lebi

Dummy variables 𝑎 𝑏 𝑐 𝑢 𝑣 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		cdlemef50.b	. 2 ⊢ 𝐵 = (Base‘𝐾)
2		cdlemef50.l	. 2 ⊢ ≤ = (le‘𝐾)
3		cdlemef50.j	. 2 ⊢ ∨ = (join‘𝐾)
4		cdlemef50.m	. 2 ⊢ ∧ = (meet‘𝐾)
5		cdlemef50.a	. 2 ⊢ 𝐴 = (Atoms‘𝐾)
6		cdlemef50.h	. 2 ⊢ 𝐻 = (LHyp‘𝐾)
7		cdlemef50.u	. 2 ⊢ 𝑈 = ((𝑃 ∨ 𝑄) ∧ 𝑊)
8		cdlemef50.d	. 2 ⊢ 𝐷 = ((𝑡 ∨ 𝑈) ∧ (𝑄 ∨ ((𝑃 ∨ 𝑡) ∧ 𝑊)))
9		cdlemefs50.e	. 2 ⊢ 𝐸 = ((𝑃 ∨ 𝑄) ∧ (𝐷 ∨ ((𝑠 ∨ 𝑡) ∧ 𝑊)))
10		cdlemef50.f	. 2 ⊢ 𝐹 = (𝑥 ∈ 𝐵 ↦ if((𝑃 ≠ 𝑄 ∧ ¬ 𝑥 ≤ 𝑊), (℩𝑧 ∈ 𝐵 ∀𝑠 ∈ 𝐴 ((¬ 𝑠 ≤ 𝑊 ∧ (𝑠 ∨ (𝑥 ∧ 𝑊)) = 𝑥) → 𝑧 = (if(𝑠 ≤ (𝑃 ∨ 𝑄), (℩𝑦 ∈ 𝐵 ∀𝑡 ∈ 𝐴 ((¬ 𝑡 ≤ 𝑊 ∧ ¬ 𝑡 ≤ (𝑃 ∨ 𝑄)) → 𝑦 = 𝐸)), ⦋𝑠 / 𝑡⦌𝐷) ∨ (𝑥 ∧ 𝑊)))), 𝑥))
11		eqid 2763	. 2 ⊢ ((𝑄 ∨ 𝑃) ∧ 𝑊) = ((𝑄 ∨ 𝑃) ∧ 𝑊)
12		eqid 2763	. 2 ⊢ ((𝑣 ∨ ((𝑄 ∨ 𝑃) ∧ 𝑊)) ∧ (𝑃 ∨ ((𝑄 ∨ 𝑣) ∧ 𝑊))) = ((𝑣 ∨ ((𝑄 ∨ 𝑃) ∧ 𝑊)) ∧ (𝑃 ∨ ((𝑄 ∨ 𝑣) ∧ 𝑊)))
13		eqid 2763	. 2 ⊢ ((𝑄 ∨ 𝑃) ∧ (((𝑣 ∨ ((𝑄 ∨ 𝑃) ∧ 𝑊)) ∧ (𝑃 ∨ ((𝑄 ∨ 𝑣) ∧ 𝑊))) ∨ ((𝑢 ∨ 𝑣) ∧ 𝑊))) = ((𝑄 ∨ 𝑃) ∧ (((𝑣 ∨ ((𝑄 ∨ 𝑃) ∧ 𝑊)) ∧ (𝑃 ∨ ((𝑄 ∨ 𝑣) ∧ 𝑊))) ∨ ((𝑢 ∨ 𝑣) ∧ 𝑊)))
14		eqid 2763	. 2 ⊢ (𝑎 ∈ 𝐵 ↦ if((𝑄 ≠ 𝑃 ∧ ¬ 𝑎 ≤ 𝑊), (℩𝑐 ∈ 𝐵 ∀𝑢 ∈ 𝐴 ((¬ 𝑢 ≤ 𝑊 ∧ (𝑢 ∨ (𝑎 ∧ 𝑊)) = 𝑎) → 𝑐 = (if(𝑢 ≤ (𝑄 ∨ 𝑃), (℩𝑏 ∈ 𝐵 ∀𝑣 ∈ 𝐴 ((¬ 𝑣 ≤ 𝑊 ∧ ¬ 𝑣 ≤ (𝑄 ∨ 𝑃)) → 𝑏 = ((𝑄 ∨ 𝑃) ∧ (((𝑣 ∨ ((𝑄 ∨ 𝑃) ∧ 𝑊)) ∧ (𝑃 ∨ ((𝑄 ∨ 𝑣) ∧ 𝑊))) ∨ ((𝑢 ∨ 𝑣) ∧ 𝑊))))), ⦋𝑢 / 𝑣⦌((𝑣 ∨ ((𝑄 ∨ 𝑃) ∧ 𝑊)) ∧ (𝑃 ∨ ((𝑄 ∨ 𝑣) ∧ 𝑊)))) ∨ (𝑎 ∧ 𝑊)))), 𝑎)) = (𝑎 ∈ 𝐵 ↦ if((𝑄 ≠ 𝑃 ∧ ¬ 𝑎 ≤ 𝑊), (℩𝑐 ∈ 𝐵 ∀𝑢 ∈ 𝐴 ((¬ 𝑢 ≤ 𝑊 ∧ (𝑢 ∨ (𝑎 ∧ 𝑊)) = 𝑎) → 𝑐 = (if(𝑢 ≤ (𝑄 ∨ 𝑃), (℩𝑏 ∈ 𝐵 ∀𝑣 ∈ 𝐴 ((¬ 𝑣 ≤ 𝑊 ∧ ¬ 𝑣 ≤ (𝑄 ∨ 𝑃)) → 𝑏 = ((𝑄 ∨ 𝑃) ∧ (((𝑣 ∨ ((𝑄 ∨ 𝑃) ∧ 𝑊)) ∧ (𝑃 ∨ ((𝑄 ∨ 𝑣) ∧ 𝑊))) ∨ ((𝑢 ∨ 𝑣) ∧ 𝑊))))), ⦋𝑢 / 𝑣⦌((𝑣 ∨ ((𝑄 ∨ 𝑃) ∧ 𝑊)) ∧ (𝑃 ∨ ((𝑄 ∨ 𝑣) ∧ 𝑊)))) ∨ (𝑎 ∧ 𝑊)))), 𝑎))
15	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14	cdlemeg49lebilem 41787	1 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵)) → (𝑋 ≤ 𝑌 ↔ (𝐹‘𝑋) ≤ (𝐹‘𝑌)))

This proof depends on syntax axioms:  ¬ wn 3   → wi 4   ↔ wb 209   ∧ wa 401   ∧ w3a 1103   = wceq 1570   ∈ wcel 2147   ≠ wne 2959  ∀wral 3080  ⦋csb 3851  ifcif 4485   class class class wbr 5106   ↦ cmpt 5189  ‘cfv 6555  ℩crio 7396  (class class class)co 7440  Basecbs 17413  lecple 17461  joincjn 18511  meetcmee 18512  Atomscatm 40511  HLchlt 40598  LHypclh 41232

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-rep 5235  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395  ax-un 7772  ax-riotaBAD 40201

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-ral 3081  df-rex 3091  df-rmo 3369  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-iun 4956  df-iin 4957  df-br 5107  df-opab 5171  df-mpt 5190  df-id 5550  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-iota 6509  df-fun 6557  df-fn 6558  df-f 6559  df-f1 6560  df-fo 6561  df-f1o 6562  df-fv 6563  df-riota 7397  df-ov 7443  df-oprab 7444  df-mpo 7445  df-1st 8022  df-2nd 8023  df-undef 8315  df-proset 18494  df-poset 18513  df-plt 18528  df-lub 18544  df-glb 18545  df-join 18546  df-meet 18547  df-p0 18623  df-p1 18624  df-lat 18632  df-clat 18699  df-oposet 40424  df-ol 40426  df-oml 40427  df-covers 40514  df-ats 40515  df-atl 40546  df-cvlat 40570  df-hlat 40599  df-llines 40746  df-lplanes 40747  df-lvols 40748  df-lines 40749  df-psubsp 40751  df-pmap 40752  df-padd 41044  df-lhyp 41236

This theorem is used by:  cdleme50eq  41789  cdleme50laut  41795