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Theorem ackbij1lem18 9262
Description: Lemma for ackbij1 9263. (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 3889 . . . 4 (𝐴 (ω ∖ 𝐴)) ⊆ 𝐴
2 ackbij.f . . . . 5 𝐹 = (𝑥 ∈ (𝒫 ω ∩ Fin) ↦ (card‘ 𝑦𝑥 ({𝑦} × 𝒫 𝑦)))
32ackbij1lem11 9255 . . . 4 ((𝐴 ∈ (𝒫 ω ∩ Fin) ∧ (𝐴 (ω ∖ 𝐴)) ⊆ 𝐴) → (𝐴 (ω ∖ 𝐴)) ∈ (𝒫 ω ∩ Fin))
41, 3mpan2 665 . . 3 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐴 (ω ∖ 𝐴)) ∈ (𝒫 ω ∩ Fin))
5 difss 3889 . . . . . . 7 (ω ∖ 𝐴) ⊆ ω
6 omsson 7217 . . . . . . 7 ω ⊆ On
75, 6sstri 3762 . . . . . 6 (ω ∖ 𝐴) ⊆ On
8 ominf 8329 . . . . . . . 8 ¬ ω ∈ Fin
9 inss2 3983 . . . . . . . . 9 (𝒫 ω ∩ Fin) ⊆ Fin
109sseli 3749 . . . . . . . 8 (𝐴 ∈ (𝒫 ω ∩ Fin) → 𝐴 ∈ Fin)
11 difinf 8387 . . . . . . . 8 ((¬ ω ∈ Fin ∧ 𝐴 ∈ Fin) → ¬ (ω ∖ 𝐴) ∈ Fin)
128, 10, 11sylancr 569 . . . . . . 7 (𝐴 ∈ (𝒫 ω ∩ Fin) → ¬ (ω ∖ 𝐴) ∈ Fin)
13 0fin 8345 . . . . . . . . 9 ∅ ∈ Fin
14 eleq1 2838 . . . . . . . . 9 ((ω ∖ 𝐴) = ∅ → ((ω ∖ 𝐴) ∈ Fin ↔ ∅ ∈ Fin))
1513, 14mpbiri 248 . . . . . . . 8 ((ω ∖ 𝐴) = ∅ → (ω ∖ 𝐴) ∈ Fin)
1615necon3bi 2969 . . . . . . 7 (¬ (ω ∖ 𝐴) ∈ Fin → (ω ∖ 𝐴) ≠ ∅)
1712, 16syl 17 . . . . . 6 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ≠ ∅)
18 onint 7143 . . . . . 6 (((ω ∖ 𝐴) ⊆ On ∧ (ω ∖ 𝐴) ≠ ∅) → (ω ∖ 𝐴) ∈ (ω ∖ 𝐴))
197, 17, 18sylancr 569 . . . . 5 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ∈ (ω ∖ 𝐴))
2019eldifad 3736 . . . 4 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ∈ ω)
21 ackbij1lem4 9248 . . . 4 ( (ω ∖ 𝐴) ∈ ω → { (ω ∖ 𝐴)} ∈ (𝒫 ω ∩ Fin))
2220, 21syl 17 . . 3 (𝐴 ∈ (𝒫 ω ∩ Fin) → { (ω ∖ 𝐴)} ∈ (𝒫 ω ∩ Fin))
23 ackbij1lem6 9250 . . 3 (((𝐴 (ω ∖ 𝐴)) ∈ (𝒫 ω ∩ Fin) ∧ { (ω ∖ 𝐴)} ∈ (𝒫 ω ∩ Fin)) → ((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)}) ∈ (𝒫 ω ∩ Fin))
244, 22, 23syl2anc 567 . 2 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)}) ∈ (𝒫 ω ∩ Fin))
2519eldifbd 3737 . . . . . 6 (𝐴 ∈ (𝒫 ω ∩ Fin) → ¬ (ω ∖ 𝐴) ∈ 𝐴)
26 disjsn 4384 . . . . . 6 ((𝐴 ∩ { (ω ∖ 𝐴)}) = ∅ ↔ ¬ (ω ∖ 𝐴) ∈ 𝐴)
2725, 26sylibr 224 . . . . 5 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐴 ∩ { (ω ∖ 𝐴)}) = ∅)
28 ssdisj 4171 . . . . 5 (((𝐴 (ω ∖ 𝐴)) ⊆ 𝐴 ∧ (𝐴 ∩ { (ω ∖ 𝐴)}) = ∅) → ((𝐴 (ω ∖ 𝐴)) ∩ { (ω ∖ 𝐴)}) = ∅)
291, 27, 28sylancr 569 . . . 4 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐴 (ω ∖ 𝐴)) ∩ { (ω ∖ 𝐴)}) = ∅)
302ackbij1lem9 9253 . . . 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 1476 . . 3 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)})) = ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹‘{ (ω ∖ 𝐴)})))
322ackbij1lem14 9258 . . . . 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 6810 . . 3 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹‘{ (ω ∖ 𝐴)})) = ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 suc (𝐹 (ω ∖ 𝐴))))
352ackbij1lem10 9254 . . . . . . 7 𝐹:(𝒫 ω ∩ Fin)⟶ω
3635ffvelrni 6502 . . . . . 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 9247 . . . . . . 7 ( (ω ∖ 𝐴) ∈ ω → (ω ∖ 𝐴) ∈ (𝒫 ω ∩ Fin))
3920, 38syl 17 . . . . . 6 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ∈ (𝒫 ω ∩ Fin))
4035ffvelrni 6502 . . . . . 6 ( (ω ∖ 𝐴) ∈ (𝒫 ω ∩ Fin) → (𝐹 (ω ∖ 𝐴)) ∈ ω)
4139, 40syl 17 . . . . 5 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹 (ω ∖ 𝐴)) ∈ ω)
42 nnasuc 7841 . . . . 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 567 . . . 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 3957 . . . . . . . . 9 ((𝐴 (ω ∖ 𝐴)) ∩ (ω ∖ 𝐴)) = ( (ω ∖ 𝐴) ∩ (𝐴 (ω ∖ 𝐴)))
45 disjdif 4183 . . . . . . . . 9 ( (ω ∖ 𝐴) ∩ (𝐴 (ω ∖ 𝐴))) = ∅
4644, 45eqtri 2793 . . . . . . . 8 ((𝐴 (ω ∖ 𝐴)) ∩ (ω ∖ 𝐴)) = ∅
4746a1i 11 . . . . . . 7 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐴 (ω ∖ 𝐴)) ∩ (ω ∖ 𝐴)) = ∅)
482ackbij1lem9 9253 . . . . . . 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 1476 . . . . . 6 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ (ω ∖ 𝐴))) = ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹 (ω ∖ 𝐴))))
50 uncom 3909 . . . . . . . 8 ((𝐴 (ω ∖ 𝐴)) ∪ (ω ∖ 𝐴)) = ( (ω ∖ 𝐴) ∪ (𝐴 (ω ∖ 𝐴)))
51 onnmin 7151 . . . . . . . . . . . . . . 15 (((ω ∖ 𝐴) ⊆ On ∧ 𝑎 ∈ (ω ∖ 𝐴)) → ¬ 𝑎 (ω ∖ 𝐴))
527, 51mpan 664 . . . . . . . . . . . . . 14 (𝑎 ∈ (ω ∖ 𝐴) → ¬ 𝑎 (ω ∖ 𝐴))
5352con2i 136 . . . . . . . . . . . . 13 (𝑎 (ω ∖ 𝐴) → ¬ 𝑎 ∈ (ω ∖ 𝐴))
5453adantl 467 . . . . . . . . . . . 12 ((𝐴 ∈ (𝒫 ω ∩ Fin) ∧ 𝑎 (ω ∖ 𝐴)) → ¬ 𝑎 ∈ (ω ∖ 𝐴))
55 ordom 7222 . . . . . . . . . . . . . . 15 Ord ω
56 ordelss 5883 . . . . . . . . . . . . . . 15 ((Ord ω ∧ (ω ∖ 𝐴) ∈ ω) → (ω ∖ 𝐴) ⊆ ω)
5755, 20, 56sylancr 569 . . . . . . . . . . . . . 14 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ⊆ ω)
5857sselda 3753 . . . . . . . . . . . . 13 ((𝐴 ∈ (𝒫 ω ∩ Fin) ∧ 𝑎 (ω ∖ 𝐴)) → 𝑎 ∈ ω)
59 eldif 3734 . . . . . . . . . . . . . . . 16 (𝑎 ∈ (ω ∖ 𝐴) ↔ (𝑎 ∈ ω ∧ ¬ 𝑎𝐴))
6059simplbi2 484 . . . . . . . . . . . . . . 15 (𝑎 ∈ ω → (¬ 𝑎𝐴𝑎 ∈ (ω ∖ 𝐴)))
6160orrd 844 . . . . . . . . . . . . . 14 (𝑎 ∈ ω → (𝑎𝐴𝑎 ∈ (ω ∖ 𝐴)))
6261orcomd 852 . . . . . . . . . . . . 13 (𝑎 ∈ ω → (𝑎 ∈ (ω ∖ 𝐴) ∨ 𝑎𝐴))
6358, 62syl 17 . . . . . . . . . . . 12 ((𝐴 ∈ (𝒫 ω ∩ Fin) ∧ 𝑎 (ω ∖ 𝐴)) → (𝑎 ∈ (ω ∖ 𝐴) ∨ 𝑎𝐴))
64 orel1 867 . . . . . . . . . . . 12 𝑎 ∈ (ω ∖ 𝐴) → ((𝑎 ∈ (ω ∖ 𝐴) ∨ 𝑎𝐴) → 𝑎𝐴))
6554, 63, 64sylc 65 . . . . . . . . . . 11 ((𝐴 ∈ (𝒫 ω ∩ Fin) ∧ 𝑎 (ω ∖ 𝐴)) → 𝑎𝐴)
6665ex 397 . . . . . . . . . 10 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝑎 (ω ∖ 𝐴) → 𝑎𝐴))
6766ssrdv 3759 . . . . . . . . 9 (𝐴 ∈ (𝒫 ω ∩ Fin) → (ω ∖ 𝐴) ⊆ 𝐴)
68 undif 4192 . . . . . . . . 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 2817 . . . . . . 7 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐴 (ω ∖ 𝐴)) ∪ (ω ∖ 𝐴)) = 𝐴)
7170fveq2d 6337 . . . . . 6 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ (ω ∖ 𝐴))) = (𝐹𝐴))
7249, 71eqtr3d 2807 . . . . 5 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 (𝐹 (ω ∖ 𝐴))) = (𝐹𝐴))
73 suceq 5934 . . . . 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 2805 . . 3 (𝐴 ∈ (𝒫 ω ∩ Fin) → ((𝐹‘(𝐴 (ω ∖ 𝐴))) +𝑜 suc (𝐹 (ω ∖ 𝐴))) = suc (𝐹𝐴))
7631, 34, 753eqtrd 2809 . 2 (𝐴 ∈ (𝒫 ω ∩ Fin) → (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)})) = suc (𝐹𝐴))
77 fveq2 6333 . . . 4 (𝑏 = ((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)}) → (𝐹𝑏) = (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)})))
7877eqeq1d 2773 . . 3 (𝑏 = ((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)}) → ((𝐹𝑏) = suc (𝐹𝐴) ↔ (𝐹‘((𝐴 (ω ∖ 𝐴)) ∪ { (ω ∖ 𝐴)})) = suc (𝐹𝐴)))
7978rspcev 3461 . 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 567 1 (𝐴 ∈ (𝒫 ω ∩ Fin) → ∃𝑏 ∈ (𝒫 ω ∩ Fin)(𝐹𝑏) = suc (𝐹𝐴))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 382  wo 828   = wceq 1631  wcel 2145  wne 2943  wrex 3062  cdif 3721  cun 3722  cin 3723  wss 3724  c0 4064  𝒫 cpw 4298  {csn 4317   cint 4612   ciun 4655  cmpt 4864   × cxp 5248  Ord word 5866  Oncon0 5867  suc csuc 5869  cfv 6032  (class class class)co 6794  ωcom 7213   +𝑜 coa 7711  Fincfn 8110  cardccrd 8962
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1870  ax-4 1885  ax-5 1991  ax-6 2057  ax-7 2093  ax-8 2147  ax-9 2154  ax-10 2174  ax-11 2190  ax-12 2203  ax-13 2408  ax-ext 2751  ax-rep 4905  ax-sep 4916  ax-nul 4924  ax-pow 4975  ax-pr 5035  ax-un 7097
This theorem depends on definitions:  df-bi 197  df-an 383  df-or 829  df-3or 1072  df-3an 1073  df-tru 1634  df-ex 1853  df-nf 1858  df-sb 2050  df-eu 2622  df-mo 2623  df-clab 2758  df-cleq 2764  df-clel 2767  df-nfc 2902  df-ne 2944  df-ral 3066  df-rex 3067  df-reu 3068  df-rmo 3069  df-rab 3070  df-v 3353  df-sbc 3589  df-csb 3684  df-dif 3727  df-un 3729  df-in 3731  df-ss 3738  df-pss 3740  df-nul 4065  df-if 4227  df-pw 4300  df-sn 4318  df-pr 4320  df-tp 4322  df-op 4324  df-uni 4576  df-int 4613  df-iun 4657  df-br 4788  df-opab 4848  df-mpt 4865  df-tr 4888  df-id 5158  df-eprel 5163  df-po 5171  df-so 5172  df-fr 5209  df-we 5211  df-xp 5256  df-rel 5257  df-cnv 5258  df-co 5259  df-dm 5260  df-rn 5261  df-res 5262  df-ima 5263  df-pred 5824  df-ord 5870  df-on 5871  df-lim 5872  df-suc 5873  df-iota 5995  df-fun 6034  df-fn 6035  df-f 6036  df-f1 6037  df-fo 6038  df-f1o 6039  df-fv 6040  df-ov 6797  df-oprab 6798  df-mpt2 6799  df-om 7214  df-1st 7316  df-2nd 7317  df-wrecs 7560  df-recs 7622  df-rdg 7660  df-1o 7714  df-2o 7715  df-oadd 7718  df-er 7897  df-map 8012  df-en 8111  df-dom 8112  df-sdom 8113  df-fin 8114  df-card 8966  df-cda 9193
This theorem is referenced by:  ackbij1  9263
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