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Theorem limcflf 23365
Description: The limit operator can be expressed as a filter limit, from the filter of neighborhoods of 𝐵 restricted to 𝐴 ∖ {𝐵}, to the topology of the complex numbers. (If 𝐵 is not a limit point of 𝐴, then it is still formally a filter limit, but the neighborhood filter is not a proper filter in this case.) (Contributed by Mario Carneiro, 25-Dec-2016.)
Hypotheses
Ref Expression
limcflf.f (𝜑𝐹:𝐴⟶ℂ)
limcflf.a (𝜑𝐴 ⊆ ℂ)
limcflf.b (𝜑𝐵 ∈ ((limPt‘𝐾)‘𝐴))
limcflf.k 𝐾 = (TopOpen‘ℂfld)
limcflf.c 𝐶 = (𝐴 ∖ {𝐵})
limcflf.l 𝐿 = (((nei‘𝐾)‘{𝐵}) ↾t 𝐶)
Assertion
Ref Expression
limcflf (𝜑 → (𝐹 lim 𝐵) = ((𝐾 fLimf 𝐿)‘(𝐹𝐶)))

Proof of Theorem limcflf
Dummy variables 𝑡 𝑠 𝑢 𝑤 𝑥 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 vex 3172 . . . . . . . . . . 11 𝑡 ∈ V
21inex1 4719 . . . . . . . . . 10 (𝑡𝐶) ∈ V
32rgenw 2904 . . . . . . . . 9 𝑡 ∈ ((nei‘𝐾)‘{𝐵})(𝑡𝐶) ∈ V
4 eqid 2606 . . . . . . . . . 10 (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ↦ (𝑡𝐶)) = (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ↦ (𝑡𝐶))
5 imaeq2 5365 . . . . . . . . . . . 12 (𝑠 = (𝑡𝐶) → ((𝐹𝐶) “ 𝑠) = ((𝐹𝐶) “ (𝑡𝐶)))
6 inss2 3792 . . . . . . . . . . . . 13 (𝑡𝐶) ⊆ 𝐶
7 resima2 5336 . . . . . . . . . . . . 13 ((𝑡𝐶) ⊆ 𝐶 → ((𝐹𝐶) “ (𝑡𝐶)) = (𝐹 “ (𝑡𝐶)))
86, 7ax-mp 5 . . . . . . . . . . . 12 ((𝐹𝐶) “ (𝑡𝐶)) = (𝐹 “ (𝑡𝐶))
95, 8syl6eq 2656 . . . . . . . . . . 11 (𝑠 = (𝑡𝐶) → ((𝐹𝐶) “ 𝑠) = (𝐹 “ (𝑡𝐶)))
109sseq1d 3591 . . . . . . . . . 10 (𝑠 = (𝑡𝐶) → (((𝐹𝐶) “ 𝑠) ⊆ 𝑢 ↔ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢))
114, 10rexrnmpt 6259 . . . . . . . . 9 (∀𝑡 ∈ ((nei‘𝐾)‘{𝐵})(𝑡𝐶) ∈ V → (∃𝑠 ∈ ran (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ↦ (𝑡𝐶))((𝐹𝐶) “ 𝑠) ⊆ 𝑢 ↔ ∃𝑡 ∈ ((nei‘𝐾)‘{𝐵})(𝐹 “ (𝑡𝐶)) ⊆ 𝑢))
123, 11mp1i 13 . . . . . . . 8 (((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) → (∃𝑠 ∈ ran (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ↦ (𝑡𝐶))((𝐹𝐶) “ 𝑠) ⊆ 𝑢 ↔ ∃𝑡 ∈ ((nei‘𝐾)‘{𝐵})(𝐹 “ (𝑡𝐶)) ⊆ 𝑢))
13 limcflf.l . . . . . . . . . 10 𝐿 = (((nei‘𝐾)‘{𝐵}) ↾t 𝐶)
14 fvex 6095 . . . . . . . . . . 11 ((nei‘𝐾)‘{𝐵}) ∈ V
15 limcflf.c . . . . . . . . . . . . . . 15 𝐶 = (𝐴 ∖ {𝐵})
16 difss 3695 . . . . . . . . . . . . . . 15 (𝐴 ∖ {𝐵}) ⊆ 𝐴
1715, 16eqsstri 3594 . . . . . . . . . . . . . 14 𝐶𝐴
18 limcflf.a . . . . . . . . . . . . . 14 (𝜑𝐴 ⊆ ℂ)
1917, 18syl5ss 3575 . . . . . . . . . . . . 13 (𝜑𝐶 ⊆ ℂ)
20 cnex 9870 . . . . . . . . . . . . . 14 ℂ ∈ V
2120ssex 4722 . . . . . . . . . . . . 13 (𝐶 ⊆ ℂ → 𝐶 ∈ V)
2219, 21syl 17 . . . . . . . . . . . 12 (𝜑𝐶 ∈ V)
2322ad2antrr 757 . . . . . . . . . . 11 (((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) → 𝐶 ∈ V)
24 restval 15853 . . . . . . . . . . 11 ((((nei‘𝐾)‘{𝐵}) ∈ V ∧ 𝐶 ∈ V) → (((nei‘𝐾)‘{𝐵}) ↾t 𝐶) = ran (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ↦ (𝑡𝐶)))
2514, 23, 24sylancr 693 . . . . . . . . . 10 (((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) → (((nei‘𝐾)‘{𝐵}) ↾t 𝐶) = ran (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ↦ (𝑡𝐶)))
2613, 25syl5eq 2652 . . . . . . . . 9 (((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) → 𝐿 = ran (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ↦ (𝑡𝐶)))
2726rexeqdv 3118 . . . . . . . 8 (((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) → (∃𝑠𝐿 ((𝐹𝐶) “ 𝑠) ⊆ 𝑢 ↔ ∃𝑠 ∈ ran (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ↦ (𝑡𝐶))((𝐹𝐶) “ 𝑠) ⊆ 𝑢))
28 limcflf.k . . . . . . . . . . . . . 14 𝐾 = (TopOpen‘ℂfld)
2928cnfldtop 22326 . . . . . . . . . . . . 13 𝐾 ∈ Top
30 opnneip 20672 . . . . . . . . . . . . 13 ((𝐾 ∈ Top ∧ 𝑤𝐾𝐵𝑤) → 𝑤 ∈ ((nei‘𝐾)‘{𝐵}))
3129, 30mp3an1 1402 . . . . . . . . . . . 12 ((𝑤𝐾𝐵𝑤) → 𝑤 ∈ ((nei‘𝐾)‘{𝐵}))
32 id 22 . . . . . . . . . . . . . . . 16 (𝑡 = 𝑤𝑡 = 𝑤)
3315a1i 11 . . . . . . . . . . . . . . . 16 (𝑡 = 𝑤𝐶 = (𝐴 ∖ {𝐵}))
3432, 33ineq12d 3773 . . . . . . . . . . . . . . 15 (𝑡 = 𝑤 → (𝑡𝐶) = (𝑤 ∩ (𝐴 ∖ {𝐵})))
3534imaeq2d 5369 . . . . . . . . . . . . . 14 (𝑡 = 𝑤 → (𝐹 “ (𝑡𝐶)) = (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))))
3635sseq1d 3591 . . . . . . . . . . . . 13 (𝑡 = 𝑤 → ((𝐹 “ (𝑡𝐶)) ⊆ 𝑢 ↔ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢))
3736rspcev 3278 . . . . . . . . . . . 12 ((𝑤 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢) → ∃𝑡 ∈ ((nei‘𝐾)‘{𝐵})(𝐹 “ (𝑡𝐶)) ⊆ 𝑢)
3831, 37sylan 486 . . . . . . . . . . 11 (((𝑤𝐾𝐵𝑤) ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢) → ∃𝑡 ∈ ((nei‘𝐾)‘{𝐵})(𝐹 “ (𝑡𝐶)) ⊆ 𝑢)
3938anasss 676 . . . . . . . . . 10 ((𝑤𝐾 ∧ (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢)) → ∃𝑡 ∈ ((nei‘𝐾)‘{𝐵})(𝐹 “ (𝑡𝐶)) ⊆ 𝑢)
4039rexlimiva 3006 . . . . . . . . 9 (∃𝑤𝐾 (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢) → ∃𝑡 ∈ ((nei‘𝐾)‘{𝐵})(𝐹 “ (𝑡𝐶)) ⊆ 𝑢)
41 simprl 789 . . . . . . . . . . . . 13 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → 𝑡 ∈ ((nei‘𝐾)‘{𝐵}))
4228cnfldtopon 22325 . . . . . . . . . . . . . . 15 𝐾 ∈ (TopOn‘ℂ)
4342toponunii 20486 . . . . . . . . . . . . . 14 ℂ = 𝐾
4443neii1 20659 . . . . . . . . . . . . 13 ((𝐾 ∈ Top ∧ 𝑡 ∈ ((nei‘𝐾)‘{𝐵})) → 𝑡 ⊆ ℂ)
4529, 41, 44sylancr 693 . . . . . . . . . . . 12 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → 𝑡 ⊆ ℂ)
4643ntropn 20602 . . . . . . . . . . . 12 ((𝐾 ∈ Top ∧ 𝑡 ⊆ ℂ) → ((int‘𝐾)‘𝑡) ∈ 𝐾)
4729, 45, 46sylancr 693 . . . . . . . . . . 11 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → ((int‘𝐾)‘𝑡) ∈ 𝐾)
4829a1i 11 . . . . . . . . . . . . . 14 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → 𝐾 ∈ Top)
4943lpss 20695 . . . . . . . . . . . . . . . . . 18 ((𝐾 ∈ Top ∧ 𝐴 ⊆ ℂ) → ((limPt‘𝐾)‘𝐴) ⊆ ℂ)
5029, 18, 49sylancr 693 . . . . . . . . . . . . . . . . 17 (𝜑 → ((limPt‘𝐾)‘𝐴) ⊆ ℂ)
51 limcflf.b . . . . . . . . . . . . . . . . 17 (𝜑𝐵 ∈ ((limPt‘𝐾)‘𝐴))
5250, 51sseldd 3565 . . . . . . . . . . . . . . . 16 (𝜑𝐵 ∈ ℂ)
5352snssd 4277 . . . . . . . . . . . . . . 15 (𝜑 → {𝐵} ⊆ ℂ)
5453ad3antrrr 761 . . . . . . . . . . . . . 14 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → {𝐵} ⊆ ℂ)
5543neiint 20657 . . . . . . . . . . . . . 14 ((𝐾 ∈ Top ∧ {𝐵} ⊆ ℂ ∧ 𝑡 ⊆ ℂ) → (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ↔ {𝐵} ⊆ ((int‘𝐾)‘𝑡)))
5648, 54, 45, 55syl3anc 1317 . . . . . . . . . . . . 13 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ↔ {𝐵} ⊆ ((int‘𝐾)‘𝑡)))
5741, 56mpbid 220 . . . . . . . . . . . 12 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → {𝐵} ⊆ ((int‘𝐾)‘𝑡))
5852ad3antrrr 761 . . . . . . . . . . . . 13 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → 𝐵 ∈ ℂ)
59 snssg 4264 . . . . . . . . . . . . 13 (𝐵 ∈ ℂ → (𝐵 ∈ ((int‘𝐾)‘𝑡) ↔ {𝐵} ⊆ ((int‘𝐾)‘𝑡)))
6058, 59syl 17 . . . . . . . . . . . 12 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → (𝐵 ∈ ((int‘𝐾)‘𝑡) ↔ {𝐵} ⊆ ((int‘𝐾)‘𝑡)))
6157, 60mpbird 245 . . . . . . . . . . 11 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → 𝐵 ∈ ((int‘𝐾)‘𝑡))
6243ntrss2 20610 . . . . . . . . . . . . . 14 ((𝐾 ∈ Top ∧ 𝑡 ⊆ ℂ) → ((int‘𝐾)‘𝑡) ⊆ 𝑡)
6329, 45, 62sylancr 693 . . . . . . . . . . . . 13 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → ((int‘𝐾)‘𝑡) ⊆ 𝑡)
64 ssrin 3796 . . . . . . . . . . . . 13 (((int‘𝐾)‘𝑡) ⊆ 𝑡 → (((int‘𝐾)‘𝑡) ∩ 𝐶) ⊆ (𝑡𝐶))
65 imass2 5404 . . . . . . . . . . . . 13 ((((int‘𝐾)‘𝑡) ∩ 𝐶) ⊆ (𝑡𝐶) → (𝐹 “ (((int‘𝐾)‘𝑡) ∩ 𝐶)) ⊆ (𝐹 “ (𝑡𝐶)))
6663, 64, 653syl 18 . . . . . . . . . . . 12 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → (𝐹 “ (((int‘𝐾)‘𝑡) ∩ 𝐶)) ⊆ (𝐹 “ (𝑡𝐶)))
67 simprr 791 . . . . . . . . . . . 12 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)
6866, 67sstrd 3574 . . . . . . . . . . 11 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → (𝐹 “ (((int‘𝐾)‘𝑡) ∩ 𝐶)) ⊆ 𝑢)
69 eleq2 2673 . . . . . . . . . . . . 13 (𝑤 = ((int‘𝐾)‘𝑡) → (𝐵𝑤𝐵 ∈ ((int‘𝐾)‘𝑡)))
7015ineq2i 3769 . . . . . . . . . . . . . . . 16 (𝑤𝐶) = (𝑤 ∩ (𝐴 ∖ {𝐵}))
71 ineq1 3765 . . . . . . . . . . . . . . . 16 (𝑤 = ((int‘𝐾)‘𝑡) → (𝑤𝐶) = (((int‘𝐾)‘𝑡) ∩ 𝐶))
7270, 71syl5eqr 2654 . . . . . . . . . . . . . . 15 (𝑤 = ((int‘𝐾)‘𝑡) → (𝑤 ∩ (𝐴 ∖ {𝐵})) = (((int‘𝐾)‘𝑡) ∩ 𝐶))
7372imaeq2d 5369 . . . . . . . . . . . . . 14 (𝑤 = ((int‘𝐾)‘𝑡) → (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) = (𝐹 “ (((int‘𝐾)‘𝑡) ∩ 𝐶)))
7473sseq1d 3591 . . . . . . . . . . . . 13 (𝑤 = ((int‘𝐾)‘𝑡) → ((𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢 ↔ (𝐹 “ (((int‘𝐾)‘𝑡) ∩ 𝐶)) ⊆ 𝑢))
7569, 74anbi12d 742 . . . . . . . . . . . 12 (𝑤 = ((int‘𝐾)‘𝑡) → ((𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢) ↔ (𝐵 ∈ ((int‘𝐾)‘𝑡) ∧ (𝐹 “ (((int‘𝐾)‘𝑡) ∩ 𝐶)) ⊆ 𝑢)))
7675rspcev 3278 . . . . . . . . . . 11 ((((int‘𝐾)‘𝑡) ∈ 𝐾 ∧ (𝐵 ∈ ((int‘𝐾)‘𝑡) ∧ (𝐹 “ (((int‘𝐾)‘𝑡) ∩ 𝐶)) ⊆ 𝑢)) → ∃𝑤𝐾 (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢))
7747, 61, 68, 76syl12anc 1315 . . . . . . . . . 10 ((((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) ∧ (𝑡 ∈ ((nei‘𝐾)‘{𝐵}) ∧ (𝐹 “ (𝑡𝐶)) ⊆ 𝑢)) → ∃𝑤𝐾 (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢))
7877rexlimdvaa 3010 . . . . . . . . 9 (((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) → (∃𝑡 ∈ ((nei‘𝐾)‘{𝐵})(𝐹 “ (𝑡𝐶)) ⊆ 𝑢 → ∃𝑤𝐾 (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢)))
7940, 78impbid2 214 . . . . . . . 8 (((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) → (∃𝑤𝐾 (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢) ↔ ∃𝑡 ∈ ((nei‘𝐾)‘{𝐵})(𝐹 “ (𝑡𝐶)) ⊆ 𝑢))
8012, 27, 793bitr4rd 299 . . . . . . 7 (((𝜑𝑥 ∈ ℂ) ∧ (𝑢𝐾𝑥𝑢)) → (∃𝑤𝐾 (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢) ↔ ∃𝑠𝐿 ((𝐹𝐶) “ 𝑠) ⊆ 𝑢))
8180anassrs 677 . . . . . 6 ((((𝜑𝑥 ∈ ℂ) ∧ 𝑢𝐾) ∧ 𝑥𝑢) → (∃𝑤𝐾 (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢) ↔ ∃𝑠𝐿 ((𝐹𝐶) “ 𝑠) ⊆ 𝑢))
8281pm5.74da 718 . . . . 5 (((𝜑𝑥 ∈ ℂ) ∧ 𝑢𝐾) → ((𝑥𝑢 → ∃𝑤𝐾 (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢)) ↔ (𝑥𝑢 → ∃𝑠𝐿 ((𝐹𝐶) “ 𝑠) ⊆ 𝑢)))
8382ralbidva 2964 . . . 4 ((𝜑𝑥 ∈ ℂ) → (∀𝑢𝐾 (𝑥𝑢 → ∃𝑤𝐾 (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢)) ↔ ∀𝑢𝐾 (𝑥𝑢 → ∃𝑠𝐿 ((𝐹𝐶) “ 𝑠) ⊆ 𝑢)))
8483pm5.32da 670 . . 3 (𝜑 → ((𝑥 ∈ ℂ ∧ ∀𝑢𝐾 (𝑥𝑢 → ∃𝑤𝐾 (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢))) ↔ (𝑥 ∈ ℂ ∧ ∀𝑢𝐾 (𝑥𝑢 → ∃𝑠𝐿 ((𝐹𝐶) “ 𝑠) ⊆ 𝑢))))
85 limcflf.f . . . 4 (𝜑𝐹:𝐴⟶ℂ)
8685, 18, 52, 28ellimc2 23361 . . 3 (𝜑 → (𝑥 ∈ (𝐹 lim 𝐵) ↔ (𝑥 ∈ ℂ ∧ ∀𝑢𝐾 (𝑥𝑢 → ∃𝑤𝐾 (𝐵𝑤 ∧ (𝐹 “ (𝑤 ∩ (𝐴 ∖ {𝐵}))) ⊆ 𝑢)))))
8742a1i 11 . . . 4 (𝜑𝐾 ∈ (TopOn‘ℂ))
8885, 18, 51, 28, 15, 13limcflflem 23364 . . . 4 (𝜑𝐿 ∈ (Fil‘𝐶))
89 fssres 5965 . . . . 5 ((𝐹:𝐴⟶ℂ ∧ 𝐶𝐴) → (𝐹𝐶):𝐶⟶ℂ)
9085, 17, 89sylancl 692 . . . 4 (𝜑 → (𝐹𝐶):𝐶⟶ℂ)
91 isflf 21546 . . . 4 ((𝐾 ∈ (TopOn‘ℂ) ∧ 𝐿 ∈ (Fil‘𝐶) ∧ (𝐹𝐶):𝐶⟶ℂ) → (𝑥 ∈ ((𝐾 fLimf 𝐿)‘(𝐹𝐶)) ↔ (𝑥 ∈ ℂ ∧ ∀𝑢𝐾 (𝑥𝑢 → ∃𝑠𝐿 ((𝐹𝐶) “ 𝑠) ⊆ 𝑢))))
9287, 88, 90, 91syl3anc 1317 . . 3 (𝜑 → (𝑥 ∈ ((𝐾 fLimf 𝐿)‘(𝐹𝐶)) ↔ (𝑥 ∈ ℂ ∧ ∀𝑢𝐾 (𝑥𝑢 → ∃𝑠𝐿 ((𝐹𝐶) “ 𝑠) ⊆ 𝑢))))
9384, 86, 923bitr4d 298 . 2 (𝜑 → (𝑥 ∈ (𝐹 lim 𝐵) ↔ 𝑥 ∈ ((𝐾 fLimf 𝐿)‘(𝐹𝐶))))
9493eqrdv 2604 1 (𝜑 → (𝐹 lim 𝐵) = ((𝐾 fLimf 𝐿)‘(𝐹𝐶)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 194  wa 382   = wceq 1474  wcel 1976  wral 2892  wrex 2893  Vcvv 3169  cdif 3533  cin 3535  wss 3536  {csn 4121  cmpt 4634  ran crn 5026  cres 5027  cima 5028  wf 5783  cfv 5787  (class class class)co 6524  cc 9787  t crest 15847  TopOpenctopn 15848  fldccnfld 19510  Topctop 20456  TopOnctopon 20457  intcnt 20570  neicnei 20650  limPtclp 20687  Filcfil 21398   fLimf cflf 21488   lim climc 23346
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1712  ax-4 1727  ax-5 1826  ax-6 1874  ax-7 1921  ax-8 1978  ax-9 1985  ax-10 2005  ax-11 2020  ax-12 2032  ax-13 2229  ax-ext 2586  ax-rep 4690  ax-sep 4700  ax-nul 4709  ax-pow 4761  ax-pr 4825  ax-un 6821  ax-cnex 9845  ax-resscn 9846  ax-1cn 9847  ax-icn 9848  ax-addcl 9849  ax-addrcl 9850  ax-mulcl 9851  ax-mulrcl 9852  ax-mulcom 9853  ax-addass 9854  ax-mulass 9855  ax-distr 9856  ax-i2m1 9857  ax-1ne0 9858  ax-1rid 9859  ax-rnegex 9860  ax-rrecex 9861  ax-cnre 9862  ax-pre-lttri 9863  ax-pre-lttrn 9864  ax-pre-ltadd 9865  ax-pre-mulgt0 9866  ax-pre-sup 9867
This theorem depends on definitions:  df-bi 195  df-or 383  df-an 384  df-3or 1031  df-3an 1032  df-tru 1477  df-ex 1695  df-nf 1700  df-sb 1867  df-eu 2458  df-mo 2459  df-clab 2593  df-cleq 2599  df-clel 2602  df-nfc 2736  df-ne 2778  df-nel 2779  df-ral 2897  df-rex 2898  df-reu 2899  df-rmo 2900  df-rab 2901  df-v 3171  df-sbc 3399  df-csb 3496  df-dif 3539  df-un 3541  df-in 3543  df-ss 3550  df-pss 3552  df-nul 3871  df-if 4033  df-pw 4106  df-sn 4122  df-pr 4124  df-tp 4126  df-op 4128  df-uni 4364  df-int 4402  df-iun 4448  df-iin 4449  df-br 4575  df-opab 4635  df-mpt 4636  df-tr 4672  df-eprel 4936  df-id 4940  df-po 4946  df-so 4947  df-fr 4984  df-we 4986  df-xp 5031  df-rel 5032  df-cnv 5033  df-co 5034  df-dm 5035  df-rn 5036  df-res 5037  df-ima 5038  df-pred 5580  df-ord 5626  df-on 5627  df-lim 5628  df-suc 5629  df-iota 5751  df-fun 5789  df-fn 5790  df-f 5791  df-f1 5792  df-fo 5793  df-f1o 5794  df-fv 5795  df-riota 6486  df-ov 6527  df-oprab 6528  df-mpt2 6529  df-om 6932  df-1st 7033  df-2nd 7034  df-wrecs 7268  df-recs 7329  df-rdg 7367  df-1o 7421  df-oadd 7425  df-er 7603  df-map 7720  df-pm 7721  df-en 7816  df-dom 7817  df-sdom 7818  df-fin 7819  df-fi 8174  df-sup 8205  df-inf 8206  df-pnf 9929  df-mnf 9930  df-xr 9931  df-ltxr 9932  df-le 9933  df-sub 10116  df-neg 10117  df-div 10531  df-nn 10865  df-2 10923  df-3 10924  df-4 10925  df-5 10926  df-6 10927  df-7 10928  df-8 10929  df-9 10930  df-n0 11137  df-z 11208  df-dec 11323  df-uz 11517  df-q 11618  df-rp 11662  df-xneg 11775  df-xadd 11776  df-xmul 11777  df-fz 12150  df-seq 12616  df-exp 12675  df-cj 13630  df-re 13631  df-im 13632  df-sqrt 13766  df-abs 13767  df-struct 15640  df-ndx 15641  df-slot 15642  df-base 15643  df-plusg 15724  df-mulr 15725  df-starv 15726  df-tset 15730  df-ple 15731  df-ds 15734  df-unif 15735  df-rest 15849  df-topn 15850  df-topgen 15870  df-psmet 19502  df-xmet 19503  df-met 19504  df-bl 19505  df-mopn 19506  df-fbas 19507  df-fg 19508  df-cnfld 19511  df-top 20460  df-bases 20461  df-topon 20462  df-topsp 20463  df-cld 20572  df-ntr 20573  df-cls 20574  df-nei 20651  df-lp 20689  df-cnp 20781  df-fil 21399  df-fm 21491  df-flim 21492  df-flf 21493  df-xms 21873  df-ms 21874  df-limc 23350
This theorem is referenced by:  limcmo  23366
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