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Theorem oemapvali 9139
Description: If 𝐹 < 𝐺, then there is some 𝑧 witnessing this, but we can say more and in fact there is a definable expression 𝑋 that also witnesses 𝐹 < 𝐺. (Contributed by Mario Carneiro, 25-May-2015.)
Hypotheses
Ref Expression
cantnfs.s 𝑆 = dom (𝐴 CNF 𝐵)
cantnfs.a (𝜑𝐴 ∈ On)
cantnfs.b (𝜑𝐵 ∈ On)
oemapval.t 𝑇 = {⟨𝑥, 𝑦⟩ ∣ ∃𝑧𝐵 ((𝑥𝑧) ∈ (𝑦𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝑥𝑤) = (𝑦𝑤)))}
oemapval.f (𝜑𝐹𝑆)
oemapval.g (𝜑𝐺𝑆)
oemapvali.r (𝜑𝐹𝑇𝐺)
oemapvali.x 𝑋 = {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)}
Assertion
Ref Expression
oemapvali (𝜑 → (𝑋𝐵 ∧ (𝐹𝑋) ∈ (𝐺𝑋) ∧ ∀𝑤𝐵 (𝑋𝑤 → (𝐹𝑤) = (𝐺𝑤))))
Distinct variable groups:   𝑤,𝑐,𝑥,𝑦,𝑧,𝐵   𝐴,𝑐,𝑤,𝑥,𝑦,𝑧   𝑇,𝑐   𝑤,𝐹,𝑥,𝑦,𝑧   𝑆,𝑐,𝑥,𝑦,𝑧   𝐺,𝑐,𝑤,𝑥,𝑦,𝑧   𝜑,𝑥,𝑦,𝑧   𝑤,𝑋,𝑥,𝑦,𝑧   𝐹,𝑐   𝜑,𝑐
Allowed substitution hints:   𝜑(𝑤)   𝑆(𝑤)   𝑇(𝑥,𝑦,𝑧,𝑤)   𝑋(𝑐)

Proof of Theorem oemapvali
StepHypRef Expression
1 oemapvali.r . . 3 (𝜑𝐹𝑇𝐺)
2 cantnfs.s . . . 4 𝑆 = dom (𝐴 CNF 𝐵)
3 cantnfs.a . . . 4 (𝜑𝐴 ∈ On)
4 cantnfs.b . . . 4 (𝜑𝐵 ∈ On)
5 oemapval.t . . . 4 𝑇 = {⟨𝑥, 𝑦⟩ ∣ ∃𝑧𝐵 ((𝑥𝑧) ∈ (𝑦𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝑥𝑤) = (𝑦𝑤)))}
6 oemapval.f . . . 4 (𝜑𝐹𝑆)
7 oemapval.g . . . 4 (𝜑𝐺𝑆)
82, 3, 4, 5, 6, 7oemapval 9138 . . 3 (𝜑 → (𝐹𝑇𝐺 ↔ ∃𝑧𝐵 ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤)))))
91, 8mpbid 234 . 2 (𝜑 → ∃𝑧𝐵 ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))
10 ssrab2 4054 . . . 4 {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ 𝐵
11 oemapvali.x . . . . 5 𝑋 = {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)}
124adantr 483 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝐵 ∈ On)
13 onss 7497 . . . . . . . 8 (𝐵 ∈ On → 𝐵 ⊆ On)
1412, 13syl 17 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝐵 ⊆ On)
1510, 14sstrid 3976 . . . . . 6 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ On)
162, 3, 4cantnfs 9121 . . . . . . . . . 10 (𝜑 → (𝐺𝑆 ↔ (𝐺:𝐵𝐴𝐺 finSupp ∅)))
177, 16mpbid 234 . . . . . . . . 9 (𝜑 → (𝐺:𝐵𝐴𝐺 finSupp ∅))
1817simprd 498 . . . . . . . 8 (𝜑𝐺 finSupp ∅)
1918adantr 483 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝐺 finSupp ∅)
2043ad2ant1 1127 . . . . . . . . . 10 ((𝜑𝑐𝐵 ∧ (𝐹𝑐) ∈ (𝐺𝑐)) → 𝐵 ∈ On)
21 simp2 1131 . . . . . . . . . 10 ((𝜑𝑐𝐵 ∧ (𝐹𝑐) ∈ (𝐺𝑐)) → 𝑐𝐵)
2217simpld 497 . . . . . . . . . . . 12 (𝜑𝐺:𝐵𝐴)
2322ffnd 6508 . . . . . . . . . . 11 (𝜑𝐺 Fn 𝐵)
24233ad2ant1 1127 . . . . . . . . . 10 ((𝜑𝑐𝐵 ∧ (𝐹𝑐) ∈ (𝐺𝑐)) → 𝐺 Fn 𝐵)
25 ne0i 4298 . . . . . . . . . . 11 ((𝐹𝑐) ∈ (𝐺𝑐) → (𝐺𝑐) ≠ ∅)
26253ad2ant3 1129 . . . . . . . . . 10 ((𝜑𝑐𝐵 ∧ (𝐹𝑐) ∈ (𝐺𝑐)) → (𝐺𝑐) ≠ ∅)
27 fvn0elsupp 7838 . . . . . . . . . 10 (((𝐵 ∈ On ∧ 𝑐𝐵) ∧ (𝐺 Fn 𝐵 ∧ (𝐺𝑐) ≠ ∅)) → 𝑐 ∈ (𝐺 supp ∅))
2820, 21, 24, 26, 27syl22anc 836 . . . . . . . . 9 ((𝜑𝑐𝐵 ∧ (𝐹𝑐) ∈ (𝐺𝑐)) → 𝑐 ∈ (𝐺 supp ∅))
2928rabssdv 4049 . . . . . . . 8 (𝜑 → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ (𝐺 supp ∅))
3029adantr 483 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ (𝐺 supp ∅))
31 fsuppimp 8831 . . . . . . . 8 (𝐺 finSupp ∅ → (Fun 𝐺 ∧ (𝐺 supp ∅) ∈ Fin))
32 ssfi 8730 . . . . . . . . 9 (((𝐺 supp ∅) ∈ Fin ∧ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ (𝐺 supp ∅)) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ Fin)
3332ex 415 . . . . . . . 8 ((𝐺 supp ∅) ∈ Fin → ({𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ (𝐺 supp ∅) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ Fin))
3431, 33simpl2im 506 . . . . . . 7 (𝐺 finSupp ∅ → ({𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ (𝐺 supp ∅) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ Fin))
3519, 30, 34sylc 65 . . . . . 6 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ Fin)
36 fveq2 6663 . . . . . . . . 9 (𝑐 = 𝑧 → (𝐹𝑐) = (𝐹𝑧))
37 fveq2 6663 . . . . . . . . 9 (𝑐 = 𝑧 → (𝐺𝑐) = (𝐺𝑧))
3836, 37eleq12d 2905 . . . . . . . 8 (𝑐 = 𝑧 → ((𝐹𝑐) ∈ (𝐺𝑐) ↔ (𝐹𝑧) ∈ (𝐺𝑧)))
39 simprl 769 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑧𝐵)
40 simprrl 779 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝐹𝑧) ∈ (𝐺𝑧))
4138, 39, 40elrabd 3680 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑧 ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)})
4241ne0d 4299 . . . . . 6 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ≠ ∅)
43 ordunifi 8760 . . . . . 6 (({𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ On ∧ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ Fin ∧ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ≠ ∅) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)})
4415, 35, 42, 43syl3anc 1365 . . . . 5 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)})
4511, 44eqeltrid 2915 . . . 4 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑋 ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)})
4610, 45sseldi 3963 . . 3 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑋𝐵)
47 fveq2 6663 . . . . . . 7 (𝑥 = 𝑋 → (𝐹𝑥) = (𝐹𝑋))
48 fveq2 6663 . . . . . . 7 (𝑥 = 𝑋 → (𝐺𝑥) = (𝐺𝑋))
4947, 48eleq12d 2905 . . . . . 6 (𝑥 = 𝑋 → ((𝐹𝑥) ∈ (𝐺𝑥) ↔ (𝐹𝑋) ∈ (𝐺𝑋)))
50 fveq2 6663 . . . . . . . 8 (𝑐 = 𝑥 → (𝐹𝑐) = (𝐹𝑥))
51 fveq2 6663 . . . . . . . 8 (𝑐 = 𝑥 → (𝐺𝑐) = (𝐺𝑥))
5250, 51eleq12d 2905 . . . . . . 7 (𝑐 = 𝑥 → ((𝐹𝑐) ∈ (𝐺𝑐) ↔ (𝐹𝑥) ∈ (𝐺𝑥)))
5352cbvrabv 3490 . . . . . 6 {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} = {𝑥𝐵 ∣ (𝐹𝑥) ∈ (𝐺𝑥)}
5449, 53elrab2 3681 . . . . 5 (𝑋 ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ↔ (𝑋𝐵 ∧ (𝐹𝑋) ∈ (𝐺𝑋)))
5545, 54sylib 220 . . . 4 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝑋𝐵 ∧ (𝐹𝑋) ∈ (𝐺𝑋)))
5655simprd 498 . . 3 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝐹𝑋) ∈ (𝐺𝑋))
57 simprrr 780 . . . 4 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤)))
583adantr 483 . . . . . . . . . . 11 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝐴 ∈ On)
5922adantr 483 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝐺:𝐵𝐴)
6059, 46ffvelrnd 6845 . . . . . . . . . . 11 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝐺𝑋) ∈ 𝐴)
61 onelon 6209 . . . . . . . . . . 11 ((𝐴 ∈ On ∧ (𝐺𝑋) ∈ 𝐴) → (𝐺𝑋) ∈ On)
6258, 60, 61syl2anc 586 . . . . . . . . . 10 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝐺𝑋) ∈ On)
63 eloni 6194 . . . . . . . . . 10 ((𝐺𝑋) ∈ On → Ord (𝐺𝑋))
64 ordirr 6202 . . . . . . . . . 10 (Ord (𝐺𝑋) → ¬ (𝐺𝑋) ∈ (𝐺𝑋))
6562, 63, 643syl 18 . . . . . . . . 9 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → ¬ (𝐺𝑋) ∈ (𝐺𝑋))
66 nelneq 2935 . . . . . . . . 9 (((𝐹𝑋) ∈ (𝐺𝑋) ∧ ¬ (𝐺𝑋) ∈ (𝐺𝑋)) → ¬ (𝐹𝑋) = (𝐺𝑋))
6756, 65, 66syl2anc 586 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → ¬ (𝐹𝑋) = (𝐺𝑋))
68 eleq2 2899 . . . . . . . . . 10 (𝑤 = 𝑋 → (𝑧𝑤𝑧𝑋))
69 fveq2 6663 . . . . . . . . . . 11 (𝑤 = 𝑋 → (𝐹𝑤) = (𝐹𝑋))
70 fveq2 6663 . . . . . . . . . . 11 (𝑤 = 𝑋 → (𝐺𝑤) = (𝐺𝑋))
7169, 70eqeq12d 2835 . . . . . . . . . 10 (𝑤 = 𝑋 → ((𝐹𝑤) = (𝐺𝑤) ↔ (𝐹𝑋) = (𝐺𝑋)))
7268, 71imbi12d 347 . . . . . . . . 9 (𝑤 = 𝑋 → ((𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤)) ↔ (𝑧𝑋 → (𝐹𝑋) = (𝐺𝑋))))
7372, 57, 46rspcdva 3623 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝑧𝑋 → (𝐹𝑋) = (𝐺𝑋)))
7467, 73mtod 200 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → ¬ 𝑧𝑋)
75 ssexg 5218 . . . . . . . . . . 11 (({𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ 𝐵𝐵 ∈ On) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ V)
7610, 12, 75sylancr 589 . . . . . . . . . 10 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ V)
77 ssonuni 7493 . . . . . . . . . 10 ({𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ V → ({𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ On → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ On))
7876, 15, 77sylc 65 . . . . . . . . 9 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ On)
7911, 78eqeltrid 2915 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑋 ∈ On)
80 onelon 6209 . . . . . . . . 9 ((𝐵 ∈ On ∧ 𝑧𝐵) → 𝑧 ∈ On)
8112, 39, 80syl2anc 586 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑧 ∈ On)
82 ontri1 6218 . . . . . . . 8 ((𝑋 ∈ On ∧ 𝑧 ∈ On) → (𝑋𝑧 ↔ ¬ 𝑧𝑋))
8379, 81, 82syl2anc 586 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝑋𝑧 ↔ ¬ 𝑧𝑋))
8474, 83mpbird 259 . . . . . 6 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑋𝑧)
85 elssuni 4859 . . . . . . . 8 (𝑧 ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} → 𝑧 {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)})
8685, 11sseqtrrdi 4016 . . . . . . 7 (𝑧 ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} → 𝑧𝑋)
8741, 86syl 17 . . . . . 6 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑧𝑋)
8884, 87eqssd 3982 . . . . 5 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑋 = 𝑧)
89 eleq1 2898 . . . . . . 7 (𝑋 = 𝑧 → (𝑋𝑤𝑧𝑤))
9089imbi1d 344 . . . . . 6 (𝑋 = 𝑧 → ((𝑋𝑤 → (𝐹𝑤) = (𝐺𝑤)) ↔ (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))
9190ralbidv 3195 . . . . 5 (𝑋 = 𝑧 → (∀𝑤𝐵 (𝑋𝑤 → (𝐹𝑤) = (𝐺𝑤)) ↔ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))
9288, 91syl 17 . . . 4 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (∀𝑤𝐵 (𝑋𝑤 → (𝐹𝑤) = (𝐺𝑤)) ↔ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))
9357, 92mpbird 259 . . 3 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → ∀𝑤𝐵 (𝑋𝑤 → (𝐹𝑤) = (𝐺𝑤)))
9446, 56, 933jca 1122 . 2 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝑋𝐵 ∧ (𝐹𝑋) ∈ (𝐺𝑋) ∧ ∀𝑤𝐵 (𝑋𝑤 → (𝐹𝑤) = (𝐺𝑤))))
959, 94rexlimddv 3289 1 (𝜑 → (𝑋𝐵 ∧ (𝐹𝑋) ∈ (𝐺𝑋) ∧ ∀𝑤𝐵 (𝑋𝑤 → (𝐹𝑤) = (𝐺𝑤))))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 208  wa 398  w3a 1081   = wceq 1530  wcel 2107  wne 3014  wral 3136  wrex 3137  {crab 3140  Vcvv 3493  wss 3934  c0 4289   cuni 4830   class class class wbr 5057  {copab 5119  dom cdm 5548  Ord word 6183  Oncon0 6184  Fun wfun 6342   Fn wfn 6343  wf 6344  cfv 6348  (class class class)co 7148   supp csupp 7822  Fincfn 8501   finSupp cfsupp 8825   CNF ccnf 9116
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 1904  ax-6 1963  ax-7 2008  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2153  ax-12 2169  ax-ext 2791  ax-rep 5181  ax-sep 5194  ax-nul 5201  ax-pow 5257  ax-pr 5320  ax-un 7453
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1082  df-3an 1083  df-tru 1533  df-fal 1543  df-ex 1774  df-nf 1778  df-sb 2063  df-mo 2616  df-eu 2648  df-clab 2798  df-cleq 2812  df-clel 2891  df-nfc 2961  df-ne 3015  df-ral 3141  df-rex 3142  df-reu 3143  df-rab 3145  df-v 3495  df-sbc 3771  df-csb 3882  df-dif 3937  df-un 3939  df-in 3941  df-ss 3950  df-pss 3952  df-nul 4290  df-if 4466  df-pw 4539  df-sn 4560  df-pr 4562  df-tp 4564  df-op 4566  df-uni 4831  df-iun 4912  df-br 5058  df-opab 5120  df-mpt 5138  df-tr 5164  df-id 5453  df-eprel 5458  df-po 5467  df-so 5468  df-fr 5507  df-we 5509  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-rn 5559  df-res 5560  df-ima 5561  df-pred 6141  df-ord 6187  df-on 6188  df-lim 6189  df-suc 6190  df-iota 6307  df-fun 6350  df-fn 6351  df-f 6352  df-f1 6353  df-fo 6354  df-f1o 6355  df-fv 6356  df-ov 7151  df-oprab 7152  df-mpo 7153  df-om 7573  df-supp 7823  df-wrecs 7939  df-recs 8000  df-rdg 8038  df-seqom 8076  df-1o 8094  df-er 8281  df-map 8400  df-en 8502  df-fin 8505  df-fsupp 8826  df-cnf 9117
This theorem is referenced by:  cantnflem1a  9140  cantnflem1b  9141  cantnflem1c  9142  cantnflem1d  9143  cantnflem1  9144
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