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Theorem ackbij1lem18 9003
Description: Lemma for ackbij1 9004. (Contributed by Stefan O'Rear, 18-Nov-2014.)
Hypothesis
Ref Expression
ackbij.f 𝐹 = (𝑥 ∈ (𝒫 ω ∩ Fin) ↦ (card‘ 𝑦𝑥 ({𝑦} × 𝒫 𝑦)))
Assertion
Ref Expression
ackbij1lem18 (𝐴 ∈ (𝒫 ω ∩ Fin) → ∃𝑏 ∈ (𝒫 ω ∩ Fin)(𝐹𝑏) = suc (𝐹𝐴))
Distinct variable groups:   𝐹,𝑏,𝑥,𝑦   𝐴,𝑏,𝑥,𝑦

Proof of Theorem ackbij1lem18
Dummy variable 𝑎 is distinct from all other variables.
StepHypRef Expression
1 difss 3715 . . . 4 (𝐴 (ω ∖ 𝐴)) ⊆ 𝐴
2 ackbij.f . . . . 5 𝐹 = (𝑥 ∈ (𝒫 ω ∩ Fin) ↦ (card‘ 𝑦𝑥 ({𝑦} × 𝒫 𝑦)))
32ackbij1lem11 8996 . . . 4 ((𝐴 ∈ (𝒫 ω ∩ Fin) ∧ (𝐴 (ω ∖ 𝐴)) ⊆ 𝐴) → (𝐴 (ω ∖ 𝐴)) ∈ (𝒫 ω ∩ Fin))
41, 3mpan2 706 . . 3 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐴 (ω ∖ 𝐴)) ∈ (𝒫 ω ∩ Fin))
5 difss 3715 . . . . . . 7 (ω ∖ 𝐴) ⊆ ω
6 omsson 7016 . . . . . . 7 ω ⊆ On
75, 6sstri 3592 . . . . . 6 (ω ∖ 𝐴) ⊆ On
8 ominf 8116 . . . . . . . 8 ¬ ω ∈ Fin
9 inss2 3812 . . . . . . . . 9 (𝒫 ω ∩ Fin) ⊆ Fin
109sseli 3579 . . . . . . . 8 (𝐴 ∈ (𝒫 ω ∩ Fin) → 𝐴 ∈ Fin)
11 difinf 8174 . . . . . . . 8 ((¬ ω ∈ Fin ∧ 𝐴 ∈ Fin) → ¬ (ω ∖ 𝐴) ∈ Fin)
128, 10, 11sylancr 694 . . . . . . 7 (𝐴 ∈ (𝒫 ω ∩ Fin) → ¬ (ω ∖ 𝐴) ∈ Fin)
13 0fin 8132 . . . . . . . . 9 ∅ ∈ Fin
14 eleq1 2686 . . . . . . . . 9 ((ω ∖ 𝐴) = ∅ → ((ω ∖ 𝐴) ∈ Fin ↔ ∅ ∈ Fin))
1513, 14mpbiri 248 . . . . . . . 8 ((ω ∖ 𝐴) = ∅ → (ω ∖ 𝐴) ∈ Fin)
1615necon3bi 2816 . . . . . . 7 (¬ (ω ∖ 𝐴) ∈ Fin → (ω ∖ 𝐴) ≠ ∅)
1712, 16syl 17 . . . . . 6 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ≠ ∅)
18 onint 6942 . . . . . 6 (((ω ∖ 𝐴) ⊆ On ∧ (ω ∖ 𝐴) ≠ ∅) → (ω ∖ 𝐴) ∈ (ω ∖ 𝐴))
197, 17, 18sylancr 694 . . . . 5 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ∈ (ω ∖ 𝐴))
2019eldifad 3567 . . . 4 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ∈ ω)
21 ackbij1lem4 8989 . . . 4 ( (ω ∖ 𝐴) ∈ ω → { (ω ∖ 𝐴)} ∈ (𝒫 ω ∩ Fin))
2220, 21syl 17 . . 3 (𝐴 ∈ (𝒫 ω ∩ Fin) → { (ω ∖ 𝐴)} ∈ (𝒫 ω ∩ Fin))
23 ackbij1lem6 8991 . . 3 (((𝐴 (ω ∖ 𝐴)) ∈ (𝒫 ω ∩ Fin) ∧ { (ω ∖ 𝐴)} ∈ (𝒫 ω ∩ Fin)) → ((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)}) ∈ (𝒫 ω ∩ Fin))
244, 22, 23syl2anc 692 . 2 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)}) ∈ (𝒫 ω ∩ Fin))
2519eldifbd 3568 . . . . . 6 (𝐴 ∈ (𝒫 ω ∩ Fin) → ¬ (ω ∖ 𝐴) ∈ 𝐴)
26 disjsn 4216 . . . . . 6 ((𝐴 ∩ { (ω ∖ 𝐴)}) = ∅ ↔ ¬ (ω ∖ 𝐴) ∈ 𝐴)
2725, 26sylibr 224 . . . . 5 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐴 ∩ { (ω ∖ 𝐴)}) = ∅)
28 ssdisj 3998 . . . . 5 (((𝐴 (ω ∖ 𝐴)) ⊆ 𝐴 ∧ (𝐴 ∩ { (ω ∖ 𝐴)}) = ∅) → ((𝐴 (ω ∖ 𝐴)) ∩ { (ω ∖ 𝐴)}) = ∅)
291, 27, 28sylancr 694 . . . 4 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐴 (ω ∖ 𝐴)) ∩ { (ω ∖ 𝐴)}) = ∅)
302ackbij1lem9 8994 . . . 4 (((𝐴 (ω ∖ 𝐴)) ∈ (𝒫 ω ∩ Fin) ∧ { (ω ∖ 𝐴)} ∈ (𝒫 ω ∩ Fin) ∧ ((𝐴 (ω ∖ 𝐴)) ∩ { (ω ∖ 𝐴)}) = ∅) → (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)})) = ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹‘{ (ω ∖ 𝐴)})))
314, 22, 29, 30syl3anc 1323 . . 3 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)})) = ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹‘{ (ω ∖ 𝐴)})))
322ackbij1lem14 8999 . . . . 5 ( (ω ∖ 𝐴) ∈ ω → (𝐹‘{ (ω ∖ 𝐴)}) = suc (𝐹 (ω ∖ 𝐴)))
3320, 32syl 17 . . . 4 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹‘{ (ω ∖ 𝐴)}) = suc (𝐹 (ω ∖ 𝐴)))
3433oveq2d 6620 . . 3 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹‘{ (ω ∖ 𝐴)})) = ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 suc (𝐹 (ω ∖ 𝐴))))
352ackbij1lem10 8995 . . . . . . 7 𝐹:(𝒫 ω ∩ Fin)⟶ω
3635ffvelrni 6314 . . . . . 6 ((𝐴 (ω ∖ 𝐴)) ∈ (𝒫 ω ∩ Fin) → (𝐹‘(𝐴 (ω ∖ 𝐴))) ∈ ω)
374, 36syl 17 . . . . 5 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹‘(𝐴 (ω ∖ 𝐴))) ∈ ω)
38 ackbij1lem3 8988 . . . . . . 7 ( (ω ∖ 𝐴) ∈ ω → (ω ∖ 𝐴) ∈ (𝒫 ω ∩ Fin))
3920, 38syl 17 . . . . . 6 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ∈ (𝒫 ω ∩ Fin))
4035ffvelrni 6314 . . . . . 6 ( (ω ∖ 𝐴) ∈ (𝒫 ω ∩ Fin) → (𝐹 (ω ∖ 𝐴)) ∈ ω)
4139, 40syl 17 . . . . 5 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹 (ω ∖ 𝐴)) ∈ ω)
42 nnasuc 7631 . . . . 5 (((𝐹‘(𝐴 (ω ∖ 𝐴))) ∈ ω ∧ (𝐹 (ω ∖ 𝐴)) ∈ ω) → ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 suc (𝐹 (ω ∖ 𝐴))) = suc ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹 (ω ∖ 𝐴))))
4337, 41, 42syl2anc 692 . . . 4 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 suc (𝐹 (ω ∖ 𝐴))) = suc ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹 (ω ∖ 𝐴))))
44 incom 3783 . . . . . . . . 9 ((𝐴 (ω ∖ 𝐴)) ∩ (ω ∖ 𝐴)) = ( (ω ∖ 𝐴) ∩ (𝐴 (ω ∖ 𝐴)))
45 disjdif 4012 . . . . . . . . 9 ( (ω ∖ 𝐴) ∩ (𝐴 (ω ∖ 𝐴))) = ∅
4644, 45eqtri 2643 . . . . . . . 8 ((𝐴 (ω ∖ 𝐴)) ∩ (ω ∖ 𝐴)) = ∅
4746a1i 11 . . . . . . 7 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐴 (ω ∖ 𝐴)) ∩ (ω ∖ 𝐴)) = ∅)
482ackbij1lem9 8994 . . . . . . 7 (((𝐴 (ω ∖ 𝐴)) ∈ (𝒫 ω ∩ Fin) ∧ (ω ∖ 𝐴) ∈ (𝒫 ω ∩ Fin) ∧ ((𝐴 (ω ∖ 𝐴)) ∩ (ω ∖ 𝐴)) = ∅) → (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ (ω ∖ 𝐴))) = ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹 (ω ∖ 𝐴))))
494, 39, 47, 48syl3anc 1323 . . . . . 6 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ (ω ∖ 𝐴))) = ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹 (ω ∖ 𝐴))))
50 uncom 3735 . . . . . . . 8 ((𝐴 (ω ∖ 𝐴)) ∪ (ω ∖ 𝐴)) = ( (ω ∖ 𝐴) ∪ (𝐴 (ω ∖ 𝐴)))
51 onnmin 6950 . . . . . . . . . . . . . . 15 (((ω ∖ 𝐴) ⊆ On ∧ 𝑎 ∈ (ω ∖ 𝐴)) → ¬ 𝑎 (ω ∖ 𝐴))
527, 51mpan 705 . . . . . . . . . . . . . 14 (𝑎 ∈ (ω ∖ 𝐴) → ¬ 𝑎 (ω ∖ 𝐴))
5352con2i 134 . . . . . . . . . . . . 13 (𝑎 (ω ∖ 𝐴) → ¬ 𝑎 ∈ (ω ∖ 𝐴))
5453adantl 482 . . . . . . . . . . . 12 ((𝐴 ∈ (𝒫 ω ∩ Fin) ∧ 𝑎 (ω ∖ 𝐴)) → ¬ 𝑎 ∈ (ω ∖ 𝐴))
55 ordom 7021 . . . . . . . . . . . . . . 15 Ord ω
56 ordelss 5698 . . . . . . . . . . . . . . 15 ((Ord ω ∧ (ω ∖ 𝐴) ∈ ω) → (ω ∖ 𝐴) ⊆ ω)
5755, 20, 56sylancr 694 . . . . . . . . . . . . . 14 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ⊆ ω)
5857sselda 3583 . . . . . . . . . . . . 13 ((𝐴 ∈ (𝒫 ω ∩ Fin) ∧ 𝑎 (ω ∖ 𝐴)) → 𝑎 ∈ ω)
59 eldif 3565 . . . . . . . . . . . . . . . 16 (𝑎 ∈ (ω ∖ 𝐴) ↔ (𝑎 ∈ ω ∧ ¬ 𝑎𝐴))
6059simplbi2 654 . . . . . . . . . . . . . . 15 (𝑎 ∈ ω → (¬ 𝑎𝐴𝑎 ∈ (ω ∖ 𝐴)))
6160orrd 393 . . . . . . . . . . . . . 14 (𝑎 ∈ ω → (𝑎𝐴𝑎 ∈ (ω ∖ 𝐴)))
6261orcomd 403 . . . . . . . . . . . . 13 (𝑎 ∈ ω → (𝑎 ∈ (ω ∖ 𝐴) ∨ 𝑎𝐴))
6358, 62syl 17 . . . . . . . . . . . 12 ((𝐴 ∈ (𝒫 ω ∩ Fin) ∧ 𝑎 (ω ∖ 𝐴)) → (𝑎 ∈ (ω ∖ 𝐴) ∨ 𝑎𝐴))
64 orel1 397 . . . . . . . . . . . 12 𝑎 ∈ (ω ∖ 𝐴) → ((𝑎 ∈ (ω ∖ 𝐴) ∨ 𝑎𝐴) → 𝑎𝐴))
6554, 63, 64sylc 65 . . . . . . . . . . 11 ((𝐴 ∈ (𝒫 ω ∩ Fin) ∧ 𝑎 (ω ∖ 𝐴)) → 𝑎𝐴)
6665ex 450 . . . . . . . . . 10 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝑎 (ω ∖ 𝐴) → 𝑎𝐴))
6766ssrdv 3589 . . . . . . . . 9 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ⊆ 𝐴)
68 undif 4021 . . . . . . . . 9 ( (ω ∖ 𝐴) ⊆ 𝐴 ↔ ( (ω ∖ 𝐴) ∪ (𝐴 (ω ∖ 𝐴))) = 𝐴)
6967, 68sylib 208 . . . . . . . 8 (𝐴 ∈ (𝒫 ω ∩ Fin) → ( (ω ∖ 𝐴) ∪ (𝐴 (ω ∖ 𝐴))) = 𝐴)
7050, 69syl5eq 2667 . . . . . . 7 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐴 (ω ∖ 𝐴)) ∪ (ω ∖ 𝐴)) = 𝐴)
7170fveq2d 6152 . . . . . 6 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ (ω ∖ 𝐴))) = (𝐹𝐴))
7249, 71eqtr3d 2657 . . . . 5 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹 (ω ∖ 𝐴))) = (𝐹𝐴))
73 suceq 5749 . . . . 5 (((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹 (ω ∖ 𝐴))) = (𝐹𝐴) → suc ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹 (ω ∖ 𝐴))) = suc (𝐹𝐴))
7472, 73syl 17 . . . 4 (𝐴 ∈ (𝒫 ω ∩ Fin) → suc ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹 (ω ∖ 𝐴))) = suc (𝐹𝐴))
7543, 74eqtrd 2655 . . 3 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 suc (𝐹 (ω ∖ 𝐴))) = suc (𝐹𝐴))
7631, 34, 753eqtrd 2659 . 2 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)})) = suc (𝐹𝐴))
77 fveq2 6148 . . . 4 (𝑏 = ((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)}) → (𝐹𝑏) = (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)})))
7877eqeq1d 2623 . . 3 (𝑏 = ((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)}) → ((𝐹𝑏) = suc (𝐹𝐴) ↔ (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)})) = suc (𝐹𝐴)))
7978rspcev 3295 . 2 ((((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)}) ∈ (𝒫 ω ∩ Fin) ∧ (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)})) = suc (𝐹𝐴)) → ∃𝑏 ∈ (𝒫 ω ∩ Fin)(𝐹𝑏) = suc (𝐹𝐴))
8024, 76, 79syl2anc 692 1 (𝐴 ∈ (𝒫 ω ∩ Fin) → ∃𝑏 ∈ (𝒫 ω ∩ Fin)(𝐹𝑏) = suc (𝐹𝐴))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wo 383  wa 384   = wceq 1480  wcel 1987  wne 2790  wrex 2908  cdif 3552  cun 3553  cin 3554  wss 3555  c0 3891  𝒫 cpw 4130  {csn 4148   cint 4440   ciun 4485  cmpt 4673   × cxp 5072  Ord word 5681  Oncon0 5682  suc csuc 5684  cfv 5847  (class class class)co 6604  ωcom 7012   +𝑜 coa 7502  Fincfn 7899  cardccrd 8705
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-rep 4731  ax-sep 4741  ax-nul 4749  ax-pow 4803  ax-pr 4867  ax-un 6902
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1037  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-ral 2912  df-rex 2913  df-reu 2914  df-rmo 2915  df-rab 2916  df-v 3188  df-sbc 3418  df-csb 3515  df-dif 3558  df-un 3560  df-in 3562  df-ss 3569  df-pss 3571  df-nul 3892  df-if 4059  df-pw 4132  df-sn 4149  df-pr 4151  df-tp 4153  df-op 4155  df-uni 4403  df-int 4441  df-iun 4487  df-br 4614  df-opab 4674  df-mpt 4675  df-tr 4713  df-eprel 4985  df-id 4989  df-po 4995  df-so 4996  df-fr 5033  df-we 5035  df-xp 5080  df-rel 5081  df-cnv 5082  df-co 5083  df-dm 5084  df-rn 5085  df-res 5086  df-ima 5087  df-pred 5639  df-ord 5685  df-on 5686  df-lim 5687  df-suc 5688  df-iota 5810  df-fun 5849  df-fn 5850  df-f 5851  df-f1 5852  df-fo 5853  df-f1o 5854  df-fv 5855  df-ov 6607  df-oprab 6608  df-mpt2 6609  df-om 7013  df-1st 7113  df-2nd 7114  df-wrecs 7352  df-recs 7413  df-rdg 7451  df-1o 7505  df-2o 7506  df-oadd 7509  df-er 7687  df-map 7804  df-en 7900  df-dom 7901  df-sdom 7902  df-fin 7903  df-card 8709  df-cda 8934
This theorem is referenced by:  ackbij1  9004
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