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Theorem erdszelem1 30302
Description: Lemma for erdsze 30313. (Contributed by Mario Carneiro, 22-Jan-2015.)
Hypothesis
Ref Expression
erdszelem1.1 𝑆 = {𝑦 ∈ 𝒫 (1...𝐴) ∣ ((𝐹𝑦) Isom < , 𝑂 (𝑦, (𝐹𝑦)) ∧ 𝐴𝑦)}
Assertion
Ref Expression
erdszelem1 (𝑋𝑆 ↔ (𝑋 ⊆ (1...𝐴) ∧ (𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑋)) ∧ 𝐴𝑋))
Distinct variable groups:   𝑦,𝐴   𝑦,𝐹   𝑦,𝑂   𝑦,𝑋
Allowed substitution hint:   𝑆(𝑦)

Proof of Theorem erdszelem1
StepHypRef Expression
1 ovex 6453 . . . 4 (1...𝐴) ∈ V
21elpw2 4654 . . 3 (𝑋 ∈ 𝒫 (1...𝐴) ↔ 𝑋 ⊆ (1...𝐴))
32anbi1i 726 . 2 ((𝑋 ∈ 𝒫 (1...𝐴) ∧ ((𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑋)) ∧ 𝐴𝑋)) ↔ (𝑋 ⊆ (1...𝐴) ∧ ((𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑋)) ∧ 𝐴𝑋)))
4 reseq2 5203 . . . . . 6 (𝑦 = 𝑋 → (𝐹𝑦) = (𝐹𝑋))
5 isoeq1 6343 . . . . . 6 ((𝐹𝑦) = (𝐹𝑋) → ((𝐹𝑦) Isom < , 𝑂 (𝑦, (𝐹𝑦)) ↔ (𝐹𝑋) Isom < , 𝑂 (𝑦, (𝐹𝑦))))
64, 5syl 17 . . . . 5 (𝑦 = 𝑋 → ((𝐹𝑦) Isom < , 𝑂 (𝑦, (𝐹𝑦)) ↔ (𝐹𝑋) Isom < , 𝑂 (𝑦, (𝐹𝑦))))
7 isoeq4 6346 . . . . 5 (𝑦 = 𝑋 → ((𝐹𝑋) Isom < , 𝑂 (𝑦, (𝐹𝑦)) ↔ (𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑦))))
8 imaeq2 5271 . . . . . 6 (𝑦 = 𝑋 → (𝐹𝑦) = (𝐹𝑋))
9 isoeq5 6347 . . . . . 6 ((𝐹𝑦) = (𝐹𝑋) → ((𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑦)) ↔ (𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑋))))
108, 9syl 17 . . . . 5 (𝑦 = 𝑋 → ((𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑦)) ↔ (𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑋))))
116, 7, 103bitrd 292 . . . 4 (𝑦 = 𝑋 → ((𝐹𝑦) Isom < , 𝑂 (𝑦, (𝐹𝑦)) ↔ (𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑋))))
12 eleq2 2581 . . . 4 (𝑦 = 𝑋 → (𝐴𝑦𝐴𝑋))
1311, 12anbi12d 742 . . 3 (𝑦 = 𝑋 → (((𝐹𝑦) Isom < , 𝑂 (𝑦, (𝐹𝑦)) ∧ 𝐴𝑦) ↔ ((𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑋)) ∧ 𝐴𝑋)))
14 erdszelem1.1 . . 3 𝑆 = {𝑦 ∈ 𝒫 (1...𝐴) ∣ ((𝐹𝑦) Isom < , 𝑂 (𝑦, (𝐹𝑦)) ∧ 𝐴𝑦)}
1513, 14elrab2 3237 . 2 (𝑋𝑆 ↔ (𝑋 ∈ 𝒫 (1...𝐴) ∧ ((𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑋)) ∧ 𝐴𝑋)))
16 3anass 1034 . 2 ((𝑋 ⊆ (1...𝐴) ∧ (𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑋)) ∧ 𝐴𝑋) ↔ (𝑋 ⊆ (1...𝐴) ∧ ((𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑋)) ∧ 𝐴𝑋)))
173, 15, 163bitr4i 290 1 (𝑋𝑆 ↔ (𝑋 ⊆ (1...𝐴) ∧ (𝐹𝑋) Isom < , 𝑂 (𝑋, (𝐹𝑋)) ∧ 𝐴𝑋))
Colors of variables: wff setvar class
Syntax hints:  wb 194  wa 382  w3a 1030   = wceq 1474  wcel 1938  {crab 2804  wss 3444  𝒫 cpw 4011  cres 4934  cima 4935   Isom wiso 5690  (class class class)co 6425  1c1 9690   < clt 9827  ...cfz 12062
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1700  ax-4 1713  ax-5 1793  ax-6 1838  ax-7 1885  ax-10 1966  ax-11 1971  ax-12 1983  ax-13 2137  ax-ext 2494  ax-sep 4607  ax-nul 4616
This theorem depends on definitions:  df-bi 195  df-or 383  df-an 384  df-3an 1032  df-tru 1477  df-ex 1695  df-nf 1699  df-sb 1831  df-eu 2366  df-clab 2501  df-cleq 2507  df-clel 2510  df-nfc 2644  df-ral 2805  df-rex 2806  df-rab 2809  df-v 3079  df-sbc 3307  df-dif 3447  df-un 3449  df-in 3451  df-ss 3458  df-nul 3778  df-if 3940  df-pw 4013  df-sn 4029  df-pr 4031  df-op 4035  df-uni 4271  df-br 4482  df-opab 4542  df-xp 4938  df-rel 4939  df-cnv 4940  df-co 4941  df-dm 4942  df-rn 4943  df-res 4944  df-ima 4945  df-iota 5653  df-fun 5691  df-fn 5692  df-f 5693  df-f1 5694  df-fo 5695  df-f1o 5696  df-fv 5697  df-isom 5698  df-ov 6428
This theorem is referenced by:  erdszelem2  30303  erdszelem4  30305  erdszelem7  30308  erdszelem8  30309
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