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Theorem oemapvali 9442
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 9441 . . 3 (𝜑 → (𝐹𝑇𝐺 ↔ ∃𝑧𝐵 ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤)))))
91, 8mpbid 231 . 2 (𝜑 → ∃𝑧𝐵 ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))
10 ssrab2 4013 . . . 4 {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ 𝐵
11 oemapvali.x . . . . 5 𝑋 = {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)}
124adantr 481 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝐵 ∈ On)
13 onss 7634 . . . . . . . 8 (𝐵 ∈ On → 𝐵 ⊆ On)
1412, 13syl 17 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝐵 ⊆ On)
1510, 14sstrid 3932 . . . . . 6 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ On)
162, 3, 4cantnfs 9424 . . . . . . . . . 10 (𝜑 → (𝐺𝑆 ↔ (𝐺:𝐵𝐴𝐺 finSupp ∅)))
177, 16mpbid 231 . . . . . . . . 9 (𝜑 → (𝐺:𝐵𝐴𝐺 finSupp ∅))
1817simprd 496 . . . . . . . 8 (𝜑𝐺 finSupp ∅)
1918adantr 481 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝐺 finSupp ∅)
2043ad2ant1 1132 . . . . . . . . . 10 ((𝜑𝑐𝐵 ∧ (𝐹𝑐) ∈ (𝐺𝑐)) → 𝐵 ∈ On)
21 simp2 1136 . . . . . . . . . 10 ((𝜑𝑐𝐵 ∧ (𝐹𝑐) ∈ (𝐺𝑐)) → 𝑐𝐵)
2217simpld 495 . . . . . . . . . . . 12 (𝜑𝐺:𝐵𝐴)
2322ffnd 6601 . . . . . . . . . . 11 (𝜑𝐺 Fn 𝐵)
24233ad2ant1 1132 . . . . . . . . . 10 ((𝜑𝑐𝐵 ∧ (𝐹𝑐) ∈ (𝐺𝑐)) → 𝐺 Fn 𝐵)
25 ne0i 4268 . . . . . . . . . . 11 ((𝐹𝑐) ∈ (𝐺𝑐) → (𝐺𝑐) ≠ ∅)
26253ad2ant3 1134 . . . . . . . . . 10 ((𝜑𝑐𝐵 ∧ (𝐹𝑐) ∈ (𝐺𝑐)) → (𝐺𝑐) ≠ ∅)
27 fvn0elsupp 7996 . . . . . . . . . 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 4008 . . . . . . . 8 (𝜑 → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ (𝐺 supp ∅))
3029adantr 481 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ (𝐺 supp ∅))
31 fsuppimp 9134 . . . . . . . 8 (𝐺 finSupp ∅ → (Fun 𝐺 ∧ (𝐺 supp ∅) ∈ Fin))
32 ssfi 8956 . . . . . . . . 9 (((𝐺 supp ∅) ∈ Fin ∧ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ (𝐺 supp ∅)) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ Fin)
3332ex 413 . . . . . . . 8 ((𝐺 supp ∅) ∈ Fin → ({𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ (𝐺 supp ∅) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ Fin))
3431, 33simpl2im 504 . . . . . . 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 6774 . . . . . . . . 9 (𝑐 = 𝑧 → (𝐹𝑐) = (𝐹𝑧))
37 fveq2 6774 . . . . . . . . 9 (𝑐 = 𝑧 → (𝐺𝑐) = (𝐺𝑧))
3836, 37eleq12d 2833 . . . . . . . 8 (𝑐 = 𝑧 → ((𝐹𝑐) ∈ (𝐺𝑐) ↔ (𝐹𝑧) ∈ (𝐺𝑧)))
39 simprl 768 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑧𝐵)
40 simprrl 778 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝐹𝑧) ∈ (𝐺𝑧))
4138, 39, 40elrabd 3626 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑧 ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)})
4241ne0d 4269 . . . . . 6 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ≠ ∅)
43 ordunifi 9064 . . . . . 6 (({𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ On ∧ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ Fin ∧ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ≠ ∅) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)})
4415, 35, 42, 43syl3anc 1370 . . . . 5 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)})
4511, 44eqeltrid 2843 . . . 4 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑋 ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)})
4610, 45sselid 3919 . . 3 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑋𝐵)
47 fveq2 6774 . . . . . . 7 (𝑥 = 𝑋 → (𝐹𝑥) = (𝐹𝑋))
48 fveq2 6774 . . . . . . 7 (𝑥 = 𝑋 → (𝐺𝑥) = (𝐺𝑋))
4947, 48eleq12d 2833 . . . . . 6 (𝑥 = 𝑋 → ((𝐹𝑥) ∈ (𝐺𝑥) ↔ (𝐹𝑋) ∈ (𝐺𝑋)))
50 fveq2 6774 . . . . . . . 8 (𝑐 = 𝑥 → (𝐹𝑐) = (𝐹𝑥))
51 fveq2 6774 . . . . . . . 8 (𝑐 = 𝑥 → (𝐺𝑐) = (𝐺𝑥))
5250, 51eleq12d 2833 . . . . . . 7 (𝑐 = 𝑥 → ((𝐹𝑐) ∈ (𝐺𝑐) ↔ (𝐹𝑥) ∈ (𝐺𝑥)))
5352cbvrabv 3426 . . . . . 6 {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} = {𝑥𝐵 ∣ (𝐹𝑥) ∈ (𝐺𝑥)}
5449, 53elrab2 3627 . . . . 5 (𝑋 ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ↔ (𝑋𝐵 ∧ (𝐹𝑋) ∈ (𝐺𝑋)))
5545, 54sylib 217 . . . 4 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝑋𝐵 ∧ (𝐹𝑋) ∈ (𝐺𝑋)))
5655simprd 496 . . 3 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝐹𝑋) ∈ (𝐺𝑋))
57 simprrr 779 . . . 4 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤)))
583adantr 481 . . . . . . . . . . 11 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝐴 ∈ On)
5922adantr 481 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝐺:𝐵𝐴)
6059, 46ffvelrnd 6962 . . . . . . . . . . 11 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝐺𝑋) ∈ 𝐴)
61 onelon 6291 . . . . . . . . . . 11 ((𝐴 ∈ On ∧ (𝐺𝑋) ∈ 𝐴) → (𝐺𝑋) ∈ On)
6258, 60, 61syl2anc 584 . . . . . . . . . 10 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝐺𝑋) ∈ On)
63 eloni 6276 . . . . . . . . . 10 ((𝐺𝑋) ∈ On → Ord (𝐺𝑋))
64 ordirr 6284 . . . . . . . . . 10 (Ord (𝐺𝑋) → ¬ (𝐺𝑋) ∈ (𝐺𝑋))
6562, 63, 643syl 18 . . . . . . . . 9 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → ¬ (𝐺𝑋) ∈ (𝐺𝑋))
66 nelneq 2863 . . . . . . . . 9 (((𝐹𝑋) ∈ (𝐺𝑋) ∧ ¬ (𝐺𝑋) ∈ (𝐺𝑋)) → ¬ (𝐹𝑋) = (𝐺𝑋))
6756, 65, 66syl2anc 584 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → ¬ (𝐹𝑋) = (𝐺𝑋))
68 eleq2 2827 . . . . . . . . . 10 (𝑤 = 𝑋 → (𝑧𝑤𝑧𝑋))
69 fveq2 6774 . . . . . . . . . . 11 (𝑤 = 𝑋 → (𝐹𝑤) = (𝐹𝑋))
70 fveq2 6774 . . . . . . . . . . 11 (𝑤 = 𝑋 → (𝐺𝑤) = (𝐺𝑋))
7169, 70eqeq12d 2754 . . . . . . . . . 10 (𝑤 = 𝑋 → ((𝐹𝑤) = (𝐺𝑤) ↔ (𝐹𝑋) = (𝐺𝑋)))
7268, 71imbi12d 345 . . . . . . . . 9 (𝑤 = 𝑋 → ((𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤)) ↔ (𝑧𝑋 → (𝐹𝑋) = (𝐺𝑋))))
7372, 57, 46rspcdva 3562 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝑧𝑋 → (𝐹𝑋) = (𝐺𝑋)))
7467, 73mtod 197 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → ¬ 𝑧𝑋)
75 ssexg 5247 . . . . . . . . . . 11 (({𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ⊆ 𝐵𝐵 ∈ On) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ V)
7610, 12, 75sylancr 587 . . . . . . . . . 10 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} ∈ V)
77 ssonuni 7630 . . . . . . . . . 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 2843 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑋 ∈ On)
80 onelon 6291 . . . . . . . . 9 ((𝐵 ∈ On ∧ 𝑧𝐵) → 𝑧 ∈ On)
8112, 39, 80syl2anc 584 . . . . . . . 8 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑧 ∈ On)
82 ontri1 6300 . . . . . . . 8 ((𝑋 ∈ On ∧ 𝑧 ∈ On) → (𝑋𝑧 ↔ ¬ 𝑧𝑋))
8379, 81, 82syl2anc 584 . . . . . . 7 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝑋𝑧 ↔ ¬ 𝑧𝑋))
8474, 83mpbird 256 . . . . . 6 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑋𝑧)
85 elssuni 4871 . . . . . . . 8 (𝑧 ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} → 𝑧 {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)})
8685, 11sseqtrrdi 3972 . . . . . . 7 (𝑧 ∈ {𝑐𝐵 ∣ (𝐹𝑐) ∈ (𝐺𝑐)} → 𝑧𝑋)
8741, 86syl 17 . . . . . 6 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑧𝑋)
8884, 87eqssd 3938 . . . . 5 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → 𝑋 = 𝑧)
89 eleq1 2826 . . . . . . 7 (𝑋 = 𝑧 → (𝑋𝑤𝑧𝑤))
9089imbi1d 342 . . . . . 6 (𝑋 = 𝑧 → ((𝑋𝑤 → (𝐹𝑤) = (𝐺𝑤)) ↔ (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))
9190ralbidv 3112 . . . . 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 256 . . 3 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → ∀𝑤𝐵 (𝑋𝑤 → (𝐹𝑤) = (𝐺𝑤)))
9446, 56, 933jca 1127 . 2 ((𝜑 ∧ (𝑧𝐵 ∧ ((𝐹𝑧) ∈ (𝐺𝑧) ∧ ∀𝑤𝐵 (𝑧𝑤 → (𝐹𝑤) = (𝐺𝑤))))) → (𝑋𝐵 ∧ (𝐹𝑋) ∈ (𝐺𝑋) ∧ ∀𝑤𝐵 (𝑋𝑤 → (𝐹𝑤) = (𝐺𝑤))))
959, 94rexlimddv 3220 1 (𝜑 → (𝑋𝐵 ∧ (𝐹𝑋) ∈ (𝐺𝑋) ∧ ∀𝑤𝐵 (𝑋𝑤 → (𝐹𝑤) = (𝐺𝑤))))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 205  wa 396  w3a 1086   = wceq 1539  wcel 2106  wne 2943  wral 3064  wrex 3065  {crab 3068  Vcvv 3432  wss 3887  c0 4256   cuni 4839   class class class wbr 5074  {copab 5136  dom cdm 5589  Ord word 6265  Oncon0 6266  Fun wfun 6427   Fn wfn 6428  wf 6429  cfv 6433  (class class class)co 7275   supp csupp 7977  Fincfn 8733   finSupp cfsupp 9128   CNF ccnf 9419
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-rep 5209  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352  ax-un 7588
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-ral 3069  df-rex 3070  df-reu 3072  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-pss 3906  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-iun 4926  df-br 5075  df-opab 5137  df-mpt 5158  df-tr 5192  df-id 5489  df-eprel 5495  df-po 5503  df-so 5504  df-fr 5544  df-we 5546  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-pred 6202  df-ord 6269  df-on 6270  df-lim 6271  df-suc 6272  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-ov 7278  df-oprab 7279  df-mpo 7280  df-om 7713  df-supp 7978  df-frecs 8097  df-wrecs 8128  df-recs 8202  df-rdg 8241  df-seqom 8279  df-1o 8297  df-map 8617  df-en 8734  df-fin 8737  df-fsupp 9129  df-cnf 9420
This theorem is referenced by:  cantnflem1a  9443  cantnflem1b  9444  cantnflem1c  9445  cantnflem1d  9446  cantnflem1  9447
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