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Theorem dibelval1st 40677
Description: Membership in value of the partial isomorphism B for a lattice 𝐾. (Contributed by NM, 13-Feb-2014.)
Hypotheses
Ref Expression
dibelval1.b 𝐡 = (Baseβ€˜πΎ)
dibelval1.l ≀ = (leβ€˜πΎ)
dibelval1.h 𝐻 = (LHypβ€˜πΎ)
dibelval1.j 𝐽 = ((DIsoAβ€˜πΎ)β€˜π‘Š)
dibelval1.i 𝐼 = ((DIsoBβ€˜πΎ)β€˜π‘Š)
Assertion
Ref Expression
dibelval1st (((𝐾 ∈ 𝑉 ∧ π‘Š ∈ 𝐻) ∧ (𝑋 ∈ 𝐡 ∧ 𝑋 ≀ π‘Š) ∧ π‘Œ ∈ (πΌβ€˜π‘‹)) β†’ (1st β€˜π‘Œ) ∈ (π½β€˜π‘‹))

Proof of Theorem dibelval1st
Dummy variable 𝑓 is distinct from all other variables.
StepHypRef Expression
1 dibelval1.b . . . . 5 𝐡 = (Baseβ€˜πΎ)
2 dibelval1.l . . . . 5 ≀ = (leβ€˜πΎ)
3 dibelval1.h . . . . 5 𝐻 = (LHypβ€˜πΎ)
4 eqid 2725 . . . . 5 ((LTrnβ€˜πΎ)β€˜π‘Š) = ((LTrnβ€˜πΎ)β€˜π‘Š)
5 eqid 2725 . . . . 5 (𝑓 ∈ ((LTrnβ€˜πΎ)β€˜π‘Š) ↦ ( I β†Ύ 𝐡)) = (𝑓 ∈ ((LTrnβ€˜πΎ)β€˜π‘Š) ↦ ( I β†Ύ 𝐡))
6 dibelval1.j . . . . 5 𝐽 = ((DIsoAβ€˜πΎ)β€˜π‘Š)
7 dibelval1.i . . . . 5 𝐼 = ((DIsoBβ€˜πΎ)β€˜π‘Š)
81, 2, 3, 4, 5, 6, 7dibval2 40672 . . . 4 (((𝐾 ∈ 𝑉 ∧ π‘Š ∈ 𝐻) ∧ (𝑋 ∈ 𝐡 ∧ 𝑋 ≀ π‘Š)) β†’ (πΌβ€˜π‘‹) = ((π½β€˜π‘‹) Γ— {(𝑓 ∈ ((LTrnβ€˜πΎ)β€˜π‘Š) ↦ ( I β†Ύ 𝐡))}))
98eleq2d 2811 . . 3 (((𝐾 ∈ 𝑉 ∧ π‘Š ∈ 𝐻) ∧ (𝑋 ∈ 𝐡 ∧ 𝑋 ≀ π‘Š)) β†’ (π‘Œ ∈ (πΌβ€˜π‘‹) ↔ π‘Œ ∈ ((π½β€˜π‘‹) Γ— {(𝑓 ∈ ((LTrnβ€˜πΎ)β€˜π‘Š) ↦ ( I β†Ύ 𝐡))})))
109biimp3a 1465 . 2 (((𝐾 ∈ 𝑉 ∧ π‘Š ∈ 𝐻) ∧ (𝑋 ∈ 𝐡 ∧ 𝑋 ≀ π‘Š) ∧ π‘Œ ∈ (πΌβ€˜π‘‹)) β†’ π‘Œ ∈ ((π½β€˜π‘‹) Γ— {(𝑓 ∈ ((LTrnβ€˜πΎ)β€˜π‘Š) ↦ ( I β†Ύ 𝐡))}))
11 xp1st 8021 . 2 (π‘Œ ∈ ((π½β€˜π‘‹) Γ— {(𝑓 ∈ ((LTrnβ€˜πΎ)β€˜π‘Š) ↦ ( I β†Ύ 𝐡))}) β†’ (1st β€˜π‘Œ) ∈ (π½β€˜π‘‹))
1210, 11syl 17 1 (((𝐾 ∈ 𝑉 ∧ π‘Š ∈ 𝐻) ∧ (𝑋 ∈ 𝐡 ∧ 𝑋 ≀ π‘Š) ∧ π‘Œ ∈ (πΌβ€˜π‘‹)) β†’ (1st β€˜π‘Œ) ∈ (π½β€˜π‘‹))
Colors of variables: wff setvar class
Syntax hints:   β†’ wi 4   ∧ wa 394   ∧ w3a 1084   = wceq 1533   ∈ wcel 2098  {csn 4624   class class class wbr 5143   ↦ cmpt 5226   I cid 5569   Γ— cxp 5670   β†Ύ cres 5674  β€˜cfv 6542  1st c1st 7987  Basecbs 17177  lecple 17237  LHypclh 39512  LTrncltrn 39629  DIsoAcdia 40556  DIsoBcdib 40666
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1905  ax-6 1963  ax-7 2003  ax-8 2100  ax-9 2108  ax-10 2129  ax-11 2146  ax-12 2166  ax-ext 2696  ax-rep 5280  ax-sep 5294  ax-nul 5301  ax-pow 5359  ax-pr 5423  ax-un 7737
This theorem depends on definitions:  df-bi 206  df-an 395  df-or 846  df-3an 1086  df-tru 1536  df-fal 1546  df-ex 1774  df-nf 1778  df-sb 2060  df-mo 2528  df-eu 2557  df-clab 2703  df-cleq 2717  df-clel 2802  df-nfc 2877  df-ne 2931  df-ral 3052  df-rex 3061  df-reu 3365  df-rab 3420  df-v 3465  df-sbc 3770  df-csb 3886  df-dif 3943  df-un 3945  df-in 3947  df-ss 3957  df-nul 4319  df-if 4525  df-pw 4600  df-sn 4625  df-pr 4627  df-op 4631  df-uni 4904  df-iun 4993  df-br 5144  df-opab 5206  df-mpt 5227  df-id 5570  df-xp 5678  df-rel 5679  df-cnv 5680  df-co 5681  df-dm 5682  df-rn 5683  df-res 5684  df-ima 5685  df-iota 6494  df-fun 6544  df-fn 6545  df-f 6546  df-f1 6547  df-fo 6548  df-f1o 6549  df-fv 6550  df-1st 7989  df-disoa 40557  df-dib 40667
This theorem is referenced by:  dibelval1st1  40678  dibelval1st2N  40679  diblss  40698
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