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Theorem cvmsss2 30999
Description: An open subset of an evenly covered set is evenly covered. (Contributed by Mario Carneiro, 7-Jul-2015.)
Hypothesis
Ref Expression
cvmcov.1 𝑆 = (𝑘𝐽 ↦ {𝑠 ∈ (𝒫 𝐶 ∖ {∅}) ∣ ( 𝑠 = (𝐹𝑘) ∧ ∀𝑢𝑠 (∀𝑣 ∈ (𝑠 ∖ {𝑢})(𝑢𝑣) = ∅ ∧ (𝐹𝑢) ∈ ((𝐶t 𝑢)Homeo(𝐽t 𝑘))))})
Assertion
Ref Expression
cvmsss2 ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) → ((𝑆𝑈) ≠ ∅ → (𝑆𝑉) ≠ ∅))
Distinct variable groups:   𝑘,𝑠,𝑢,𝑣,𝐶   𝑘,𝐹,𝑠,𝑢,𝑣   𝑘,𝐽,𝑠,𝑢,𝑣   𝑈,𝑘,𝑠,𝑢,𝑣   𝑘,𝑉,𝑠,𝑢,𝑣
Allowed substitution hints:   𝑆(𝑣,𝑢,𝑘,𝑠)

Proof of Theorem cvmsss2
Dummy variables 𝑎 𝑏 𝑡 𝑤 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 n0 3912 . 2 ((𝑆𝑈) ≠ ∅ ↔ ∃𝑥 𝑥 ∈ (𝑆𝑈))
2 simpl2 1063 . . . . . 6 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → 𝑉𝐽)
3 simpl1 1062 . . . . . . . . . . . 12 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → 𝐹 ∈ (𝐶 CovMap 𝐽))
4 cvmtop1 30985 . . . . . . . . . . . 12 (𝐹 ∈ (𝐶 CovMap 𝐽) → 𝐶 ∈ Top)
53, 4syl 17 . . . . . . . . . . 11 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → 𝐶 ∈ Top)
65adantr 481 . . . . . . . . . 10 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑦𝑥) → 𝐶 ∈ Top)
7 cvmcov.1 . . . . . . . . . . . . 13 𝑆 = (𝑘𝐽 ↦ {𝑠 ∈ (𝒫 𝐶 ∖ {∅}) ∣ ( 𝑠 = (𝐹𝑘) ∧ ∀𝑢𝑠 (∀𝑣 ∈ (𝑠 ∖ {𝑢})(𝑢𝑣) = ∅ ∧ (𝐹𝑢) ∈ ((𝐶t 𝑢)Homeo(𝐽t 𝑘))))})
87cvmsss 30992 . . . . . . . . . . . 12 (𝑥 ∈ (𝑆𝑈) → 𝑥𝐶)
98adantl 482 . . . . . . . . . . 11 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → 𝑥𝐶)
109sselda 3587 . . . . . . . . . 10 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑦𝑥) → 𝑦𝐶)
11 cvmcn 30987 . . . . . . . . . . . . 13 (𝐹 ∈ (𝐶 CovMap 𝐽) → 𝐹 ∈ (𝐶 Cn 𝐽))
123, 11syl 17 . . . . . . . . . . . 12 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → 𝐹 ∈ (𝐶 Cn 𝐽))
13 cnima 20992 . . . . . . . . . . . 12 ((𝐹 ∈ (𝐶 Cn 𝐽) ∧ 𝑉𝐽) → (𝐹𝑉) ∈ 𝐶)
1412, 2, 13syl2anc 692 . . . . . . . . . . 11 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → (𝐹𝑉) ∈ 𝐶)
1514adantr 481 . . . . . . . . . 10 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑦𝑥) → (𝐹𝑉) ∈ 𝐶)
16 inopn 20636 . . . . . . . . . 10 ((𝐶 ∈ Top ∧ 𝑦𝐶 ∧ (𝐹𝑉) ∈ 𝐶) → (𝑦 ∩ (𝐹𝑉)) ∈ 𝐶)
176, 10, 15, 16syl3anc 1323 . . . . . . . . 9 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑦𝑥) → (𝑦 ∩ (𝐹𝑉)) ∈ 𝐶)
18 eqid 2621 . . . . . . . . 9 (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))
1917, 18fmptd 6346 . . . . . . . 8 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))):𝑥𝐶)
20 frn 6015 . . . . . . . 8 ((𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))):𝑥𝐶 → ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ⊆ 𝐶)
2119, 20syl 17 . . . . . . 7 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ⊆ 𝐶)
227cvmsn0 30993 . . . . . . . . 9 (𝑥 ∈ (𝑆𝑈) → 𝑥 ≠ ∅)
2322adantl 482 . . . . . . . 8 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → 𝑥 ≠ ∅)
24 dmmptg 5596 . . . . . . . . . . . 12 (∀𝑦𝑥 (𝑦 ∩ (𝐹𝑉)) ∈ V → dom (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = 𝑥)
25 inex1g 4766 . . . . . . . . . . . 12 (𝑦𝑥 → (𝑦 ∩ (𝐹𝑉)) ∈ V)
2624, 25mprg 2921 . . . . . . . . . . 11 dom (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = 𝑥
2726eqeq1i 2626 . . . . . . . . . 10 (dom (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = ∅ ↔ 𝑥 = ∅)
28 dm0rn0 5307 . . . . . . . . . 10 (dom (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = ∅ ↔ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = ∅)
2927, 28bitr3i 266 . . . . . . . . 9 (𝑥 = ∅ ↔ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = ∅)
3029necon3bii 2842 . . . . . . . 8 (𝑥 ≠ ∅ ↔ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ≠ ∅)
3123, 30sylib 208 . . . . . . 7 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ≠ ∅)
3221, 31jca 554 . . . . . 6 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ⊆ 𝐶 ∧ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ≠ ∅))
33 inss2 3817 . . . . . . . . . . . 12 (𝑦 ∩ (𝐹𝑉)) ⊆ (𝐹𝑉)
34 elpw2g 4792 . . . . . . . . . . . . 13 ((𝐹𝑉) ∈ 𝐶 → ((𝑦 ∩ (𝐹𝑉)) ∈ 𝒫 (𝐹𝑉) ↔ (𝑦 ∩ (𝐹𝑉)) ⊆ (𝐹𝑉)))
3515, 34syl 17 . . . . . . . . . . . 12 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑦𝑥) → ((𝑦 ∩ (𝐹𝑉)) ∈ 𝒫 (𝐹𝑉) ↔ (𝑦 ∩ (𝐹𝑉)) ⊆ (𝐹𝑉)))
3633, 35mpbiri 248 . . . . . . . . . . 11 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑦𝑥) → (𝑦 ∩ (𝐹𝑉)) ∈ 𝒫 (𝐹𝑉))
3736, 18fmptd 6346 . . . . . . . . . 10 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))):𝑥⟶𝒫 (𝐹𝑉))
38 frn 6015 . . . . . . . . . 10 ((𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))):𝑥⟶𝒫 (𝐹𝑉) → ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ⊆ 𝒫 (𝐹𝑉))
3937, 38syl 17 . . . . . . . . 9 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ⊆ 𝒫 (𝐹𝑉))
40 sspwuni 4582 . . . . . . . . 9 (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ⊆ 𝒫 (𝐹𝑉) ↔ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ⊆ (𝐹𝑉))
4139, 40sylib 208 . . . . . . . 8 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ⊆ (𝐹𝑉))
42 simpl3 1064 . . . . . . . . . . . . . 14 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → 𝑉𝑈)
43 imass2 5465 . . . . . . . . . . . . . 14 (𝑉𝑈 → (𝐹𝑉) ⊆ (𝐹𝑈))
4442, 43syl 17 . . . . . . . . . . . . 13 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → (𝐹𝑉) ⊆ (𝐹𝑈))
457cvmsuni 30994 . . . . . . . . . . . . . 14 (𝑥 ∈ (𝑆𝑈) → 𝑥 = (𝐹𝑈))
4645adantl 482 . . . . . . . . . . . . 13 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → 𝑥 = (𝐹𝑈))
4744, 46sseqtr4d 3626 . . . . . . . . . . . 12 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → (𝐹𝑉) ⊆ 𝑥)
4847sselda 3587 . . . . . . . . . . 11 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑧 ∈ (𝐹𝑉)) → 𝑧 𝑥)
49 eqid 2621 . . . . . . . . . . . . . . . . 17 (𝑡 ∩ (𝐹𝑉)) = (𝑡 ∩ (𝐹𝑉))
50 ineq1 3790 . . . . . . . . . . . . . . . . . . 19 (𝑦 = 𝑡 → (𝑦 ∩ (𝐹𝑉)) = (𝑡 ∩ (𝐹𝑉)))
5150eqeq2d 2631 . . . . . . . . . . . . . . . . . 18 (𝑦 = 𝑡 → ((𝑡 ∩ (𝐹𝑉)) = (𝑦 ∩ (𝐹𝑉)) ↔ (𝑡 ∩ (𝐹𝑉)) = (𝑡 ∩ (𝐹𝑉))))
5251rspcev 3298 . . . . . . . . . . . . . . . . 17 ((𝑡𝑥 ∧ (𝑡 ∩ (𝐹𝑉)) = (𝑡 ∩ (𝐹𝑉))) → ∃𝑦𝑥 (𝑡 ∩ (𝐹𝑉)) = (𝑦 ∩ (𝐹𝑉)))
5349, 52mpan2 706 . . . . . . . . . . . . . . . 16 (𝑡𝑥 → ∃𝑦𝑥 (𝑡 ∩ (𝐹𝑉)) = (𝑦 ∩ (𝐹𝑉)))
5453ad2antrl 763 . . . . . . . . . . . . . . 15 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑧 ∈ (𝐹𝑉)) ∧ (𝑡𝑥𝑧𝑡)) → ∃𝑦𝑥 (𝑡 ∩ (𝐹𝑉)) = (𝑦 ∩ (𝐹𝑉)))
55 vex 3192 . . . . . . . . . . . . . . . . 17 𝑡 ∈ V
5655inex1 4764 . . . . . . . . . . . . . . . 16 (𝑡 ∩ (𝐹𝑉)) ∈ V
5718elrnmpt 5337 . . . . . . . . . . . . . . . 16 ((𝑡 ∩ (𝐹𝑉)) ∈ V → ((𝑡 ∩ (𝐹𝑉)) ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ↔ ∃𝑦𝑥 (𝑡 ∩ (𝐹𝑉)) = (𝑦 ∩ (𝐹𝑉))))
5856, 57ax-mp 5 . . . . . . . . . . . . . . 15 ((𝑡 ∩ (𝐹𝑉)) ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ↔ ∃𝑦𝑥 (𝑡 ∩ (𝐹𝑉)) = (𝑦 ∩ (𝐹𝑉)))
5954, 58sylibr 224 . . . . . . . . . . . . . 14 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑧 ∈ (𝐹𝑉)) ∧ (𝑡𝑥𝑧𝑡)) → (𝑡 ∩ (𝐹𝑉)) ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))))
60 simprr 795 . . . . . . . . . . . . . . 15 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑧 ∈ (𝐹𝑉)) ∧ (𝑡𝑥𝑧𝑡)) → 𝑧𝑡)
61 simplr 791 . . . . . . . . . . . . . . 15 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑧 ∈ (𝐹𝑉)) ∧ (𝑡𝑥𝑧𝑡)) → 𝑧 ∈ (𝐹𝑉))
6260, 61elind 3781 . . . . . . . . . . . . . 14 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑧 ∈ (𝐹𝑉)) ∧ (𝑡𝑥𝑧𝑡)) → 𝑧 ∈ (𝑡 ∩ (𝐹𝑉)))
63 eleq2 2687 . . . . . . . . . . . . . . 15 (𝑤 = (𝑡 ∩ (𝐹𝑉)) → (𝑧𝑤𝑧 ∈ (𝑡 ∩ (𝐹𝑉))))
6463rspcev 3298 . . . . . . . . . . . . . 14 (((𝑡 ∩ (𝐹𝑉)) ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∧ 𝑧 ∈ (𝑡 ∩ (𝐹𝑉))) → ∃𝑤 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))𝑧𝑤)
6559, 62, 64syl2anc 692 . . . . . . . . . . . . 13 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑧 ∈ (𝐹𝑉)) ∧ (𝑡𝑥𝑧𝑡)) → ∃𝑤 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))𝑧𝑤)
6665rexlimdvaa 3026 . . . . . . . . . . . 12 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑧 ∈ (𝐹𝑉)) → (∃𝑡𝑥 𝑧𝑡 → ∃𝑤 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))𝑧𝑤))
67 eluni2 4411 . . . . . . . . . . . 12 (𝑧 𝑥 ↔ ∃𝑡𝑥 𝑧𝑡)
68 eluni2 4411 . . . . . . . . . . . 12 (𝑧 ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ↔ ∃𝑤 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))𝑧𝑤)
6966, 67, 683imtr4g 285 . . . . . . . . . . 11 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑧 ∈ (𝐹𝑉)) → (𝑧 𝑥𝑧 ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))))
7048, 69mpd 15 . . . . . . . . . 10 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑧 ∈ (𝐹𝑉)) → 𝑧 ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))))
7170ex 450 . . . . . . . . 9 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → (𝑧 ∈ (𝐹𝑉) → 𝑧 ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))))
7271ssrdv 3593 . . . . . . . 8 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → (𝐹𝑉) ⊆ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))))
7341, 72eqssd 3604 . . . . . . 7 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = (𝐹𝑉))
74 eldifsn 4292 . . . . . . . . . . . 12 (𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {(𝑡 ∩ (𝐹𝑉))}) ↔ (𝑧 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∧ 𝑧 ≠ (𝑡 ∩ (𝐹𝑉))))
75 vex 3192 . . . . . . . . . . . . . . 15 𝑧 ∈ V
7618elrnmpt 5337 . . . . . . . . . . . . . . 15 (𝑧 ∈ V → (𝑧 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ↔ ∃𝑦𝑥 𝑧 = (𝑦 ∩ (𝐹𝑉))))
7775, 76ax-mp 5 . . . . . . . . . . . . . 14 (𝑧 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ↔ ∃𝑦𝑥 𝑧 = (𝑦 ∩ (𝐹𝑉)))
7850equcoms 1944 . . . . . . . . . . . . . . . . . 18 (𝑡 = 𝑦 → (𝑦 ∩ (𝐹𝑉)) = (𝑡 ∩ (𝐹𝑉)))
7978necon3ai 2815 . . . . . . . . . . . . . . . . 17 ((𝑦 ∩ (𝐹𝑉)) ≠ (𝑡 ∩ (𝐹𝑉)) → ¬ 𝑡 = 𝑦)
80 simpllr 798 . . . . . . . . . . . . . . . . . . 19 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) ∧ 𝑦𝑥) → 𝑥 ∈ (𝑆𝑈))
81 simplr 791 . . . . . . . . . . . . . . . . . . 19 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) ∧ 𝑦𝑥) → 𝑡𝑥)
82 simpr 477 . . . . . . . . . . . . . . . . . . 19 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) ∧ 𝑦𝑥) → 𝑦𝑥)
837cvmsdisj 30995 . . . . . . . . . . . . . . . . . . 19 ((𝑥 ∈ (𝑆𝑈) ∧ 𝑡𝑥𝑦𝑥) → (𝑡 = 𝑦 ∨ (𝑡𝑦) = ∅))
8480, 81, 82, 83syl3anc 1323 . . . . . . . . . . . . . . . . . 18 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) ∧ 𝑦𝑥) → (𝑡 = 𝑦 ∨ (𝑡𝑦) = ∅))
8584ord 392 . . . . . . . . . . . . . . . . 17 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) ∧ 𝑦𝑥) → (¬ 𝑡 = 𝑦 → (𝑡𝑦) = ∅))
86 inss1 3816 . . . . . . . . . . . . . . . . . 18 ((𝑡𝑦) ∩ (𝐹𝑉)) ⊆ (𝑡𝑦)
87 sseq0 3952 . . . . . . . . . . . . . . . . . 18 ((((𝑡𝑦) ∩ (𝐹𝑉)) ⊆ (𝑡𝑦) ∧ (𝑡𝑦) = ∅) → ((𝑡𝑦) ∩ (𝐹𝑉)) = ∅)
8886, 87mpan 705 . . . . . . . . . . . . . . . . 17 ((𝑡𝑦) = ∅ → ((𝑡𝑦) ∩ (𝐹𝑉)) = ∅)
8979, 85, 88syl56 36 . . . . . . . . . . . . . . . 16 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) ∧ 𝑦𝑥) → ((𝑦 ∩ (𝐹𝑉)) ≠ (𝑡 ∩ (𝐹𝑉)) → ((𝑡𝑦) ∩ (𝐹𝑉)) = ∅))
90 neeq1 2852 . . . . . . . . . . . . . . . . 17 (𝑧 = (𝑦 ∩ (𝐹𝑉)) → (𝑧 ≠ (𝑡 ∩ (𝐹𝑉)) ↔ (𝑦 ∩ (𝐹𝑉)) ≠ (𝑡 ∩ (𝐹𝑉))))
91 ineq2 3791 . . . . . . . . . . . . . . . . . . 19 (𝑧 = (𝑦 ∩ (𝐹𝑉)) → ((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ((𝑡 ∩ (𝐹𝑉)) ∩ (𝑦 ∩ (𝐹𝑉))))
92 inindir 3814 . . . . . . . . . . . . . . . . . . 19 ((𝑡𝑦) ∩ (𝐹𝑉)) = ((𝑡 ∩ (𝐹𝑉)) ∩ (𝑦 ∩ (𝐹𝑉)))
9391, 92syl6eqr 2673 . . . . . . . . . . . . . . . . . 18 (𝑧 = (𝑦 ∩ (𝐹𝑉)) → ((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ((𝑡𝑦) ∩ (𝐹𝑉)))
9493eqeq1d 2623 . . . . . . . . . . . . . . . . 17 (𝑧 = (𝑦 ∩ (𝐹𝑉)) → (((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅ ↔ ((𝑡𝑦) ∩ (𝐹𝑉)) = ∅))
9590, 94imbi12d 334 . . . . . . . . . . . . . . . 16 (𝑧 = (𝑦 ∩ (𝐹𝑉)) → ((𝑧 ≠ (𝑡 ∩ (𝐹𝑉)) → ((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅) ↔ ((𝑦 ∩ (𝐹𝑉)) ≠ (𝑡 ∩ (𝐹𝑉)) → ((𝑡𝑦) ∩ (𝐹𝑉)) = ∅)))
9689, 95syl5ibrcom 237 . . . . . . . . . . . . . . 15 (((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) ∧ 𝑦𝑥) → (𝑧 = (𝑦 ∩ (𝐹𝑉)) → (𝑧 ≠ (𝑡 ∩ (𝐹𝑉)) → ((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅)))
9796rexlimdva 3025 . . . . . . . . . . . . . 14 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (∃𝑦𝑥 𝑧 = (𝑦 ∩ (𝐹𝑉)) → (𝑧 ≠ (𝑡 ∩ (𝐹𝑉)) → ((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅)))
9877, 97syl5bi 232 . . . . . . . . . . . . 13 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (𝑧 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) → (𝑧 ≠ (𝑡 ∩ (𝐹𝑉)) → ((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅)))
9998impd 447 . . . . . . . . . . . 12 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → ((𝑧 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∧ 𝑧 ≠ (𝑡 ∩ (𝐹𝑉))) → ((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅))
10074, 99syl5bi 232 . . . . . . . . . . 11 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {(𝑡 ∩ (𝐹𝑉))}) → ((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅))
101100ralrimiv 2960 . . . . . . . . . 10 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → ∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {(𝑡 ∩ (𝐹𝑉))})((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅)
102 inss1 3816 . . . . . . . . . . . . 13 (𝑡 ∩ (𝐹𝑉)) ⊆ 𝑡
103 resabs1 5391 . . . . . . . . . . . . 13 ((𝑡 ∩ (𝐹𝑉)) ⊆ 𝑡 → ((𝐹𝑡) ↾ (𝑡 ∩ (𝐹𝑉))) = (𝐹 ↾ (𝑡 ∩ (𝐹𝑉))))
104102, 103ax-mp 5 . . . . . . . . . . . 12 ((𝐹𝑡) ↾ (𝑡 ∩ (𝐹𝑉))) = (𝐹 ↾ (𝑡 ∩ (𝐹𝑉)))
1057cvmshmeo 30996 . . . . . . . . . . . . . 14 ((𝑥 ∈ (𝑆𝑈) ∧ 𝑡𝑥) → (𝐹𝑡) ∈ ((𝐶t 𝑡)Homeo(𝐽t 𝑈)))
106105adantll 749 . . . . . . . . . . . . 13 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (𝐹𝑡) ∈ ((𝐶t 𝑡)Homeo(𝐽t 𝑈)))
1075adantr 481 . . . . . . . . . . . . . . 15 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → 𝐶 ∈ Top)
1089sselda 3587 . . . . . . . . . . . . . . . 16 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → 𝑡𝐶)
109 elssuni 4438 . . . . . . . . . . . . . . . 16 (𝑡𝐶𝑡 𝐶)
110108, 109syl 17 . . . . . . . . . . . . . . 15 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → 𝑡 𝐶)
111 eqid 2621 . . . . . . . . . . . . . . . 16 𝐶 = 𝐶
112111restuni 20889 . . . . . . . . . . . . . . 15 ((𝐶 ∈ Top ∧ 𝑡 𝐶) → 𝑡 = (𝐶t 𝑡))
113107, 110, 112syl2anc 692 . . . . . . . . . . . . . 14 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → 𝑡 = (𝐶t 𝑡))
114102, 113syl5sseq 3637 . . . . . . . . . . . . 13 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (𝑡 ∩ (𝐹𝑉)) ⊆ (𝐶t 𝑡))
115 eqid 2621 . . . . . . . . . . . . . 14 (𝐶t 𝑡) = (𝐶t 𝑡)
116115hmeores 21497 . . . . . . . . . . . . 13 (((𝐹𝑡) ∈ ((𝐶t 𝑡)Homeo(𝐽t 𝑈)) ∧ (𝑡 ∩ (𝐹𝑉)) ⊆ (𝐶t 𝑡)) → ((𝐹𝑡) ↾ (𝑡 ∩ (𝐹𝑉))) ∈ (((𝐶t 𝑡) ↾t (𝑡 ∩ (𝐹𝑉)))Homeo((𝐽t 𝑈) ↾t ((𝐹𝑡) “ (𝑡 ∩ (𝐹𝑉))))))
117106, 114, 116syl2anc 692 . . . . . . . . . . . 12 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → ((𝐹𝑡) ↾ (𝑡 ∩ (𝐹𝑉))) ∈ (((𝐶t 𝑡) ↾t (𝑡 ∩ (𝐹𝑉)))Homeo((𝐽t 𝑈) ↾t ((𝐹𝑡) “ (𝑡 ∩ (𝐹𝑉))))))
118104, 117syl5eqelr 2703 . . . . . . . . . . 11 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (𝐹 ↾ (𝑡 ∩ (𝐹𝑉))) ∈ (((𝐶t 𝑡) ↾t (𝑡 ∩ (𝐹𝑉)))Homeo((𝐽t 𝑈) ↾t ((𝐹𝑡) “ (𝑡 ∩ (𝐹𝑉))))))
119102a1i 11 . . . . . . . . . . . . 13 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (𝑡 ∩ (𝐹𝑉)) ⊆ 𝑡)
120 simpr 477 . . . . . . . . . . . . 13 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → 𝑡𝑥)
121 restabs 20892 . . . . . . . . . . . . 13 ((𝐶 ∈ Top ∧ (𝑡 ∩ (𝐹𝑉)) ⊆ 𝑡𝑡𝑥) → ((𝐶t 𝑡) ↾t (𝑡 ∩ (𝐹𝑉))) = (𝐶t (𝑡 ∩ (𝐹𝑉))))
122107, 119, 120, 121syl3anc 1323 . . . . . . . . . . . 12 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → ((𝐶t 𝑡) ↾t (𝑡 ∩ (𝐹𝑉))) = (𝐶t (𝑡 ∩ (𝐹𝑉))))
123 incom 3788 . . . . . . . . . . . . . . . . 17 (𝑡 ∩ (𝐹𝑉)) = ((𝐹𝑉) ∩ 𝑡)
124 cnvresima 5587 . . . . . . . . . . . . . . . . 17 ((𝐹𝑡) “ 𝑉) = ((𝐹𝑉) ∩ 𝑡)
125123, 124eqtr4i 2646 . . . . . . . . . . . . . . . 16 (𝑡 ∩ (𝐹𝑉)) = ((𝐹𝑡) “ 𝑉)
126125imaeq2i 5428 . . . . . . . . . . . . . . 15 ((𝐹𝑡) “ (𝑡 ∩ (𝐹𝑉))) = ((𝐹𝑡) “ ((𝐹𝑡) “ 𝑉))
1273adantr 481 . . . . . . . . . . . . . . . . . 18 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → 𝐹 ∈ (𝐶 CovMap 𝐽))
128 simplr 791 . . . . . . . . . . . . . . . . . 18 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → 𝑥 ∈ (𝑆𝑈))
1297cvmsf1o 30997 . . . . . . . . . . . . . . . . . 18 ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑥 ∈ (𝑆𝑈) ∧ 𝑡𝑥) → (𝐹𝑡):𝑡1-1-onto𝑈)
130127, 128, 120, 129syl3anc 1323 . . . . . . . . . . . . . . . . 17 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (𝐹𝑡):𝑡1-1-onto𝑈)
131 f1ofo 6106 . . . . . . . . . . . . . . . . 17 ((𝐹𝑡):𝑡1-1-onto𝑈 → (𝐹𝑡):𝑡onto𝑈)
132130, 131syl 17 . . . . . . . . . . . . . . . 16 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (𝐹𝑡):𝑡onto𝑈)
13342adantr 481 . . . . . . . . . . . . . . . 16 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → 𝑉𝑈)
134 foimacnv 6116 . . . . . . . . . . . . . . . 16 (((𝐹𝑡):𝑡onto𝑈𝑉𝑈) → ((𝐹𝑡) “ ((𝐹𝑡) “ 𝑉)) = 𝑉)
135132, 133, 134syl2anc 692 . . . . . . . . . . . . . . 15 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → ((𝐹𝑡) “ ((𝐹𝑡) “ 𝑉)) = 𝑉)
136126, 135syl5eq 2667 . . . . . . . . . . . . . 14 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → ((𝐹𝑡) “ (𝑡 ∩ (𝐹𝑉))) = 𝑉)
137136oveq2d 6626 . . . . . . . . . . . . 13 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → ((𝐽t 𝑈) ↾t ((𝐹𝑡) “ (𝑡 ∩ (𝐹𝑉)))) = ((𝐽t 𝑈) ↾t 𝑉))
138 cvmtop2 30986 . . . . . . . . . . . . . . . 16 (𝐹 ∈ (𝐶 CovMap 𝐽) → 𝐽 ∈ Top)
1393, 138syl 17 . . . . . . . . . . . . . . 15 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → 𝐽 ∈ Top)
1407cvmsrcl 30989 . . . . . . . . . . . . . . . 16 (𝑥 ∈ (𝑆𝑈) → 𝑈𝐽)
141140adantl 482 . . . . . . . . . . . . . . 15 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → 𝑈𝐽)
142 restabs 20892 . . . . . . . . . . . . . . 15 ((𝐽 ∈ Top ∧ 𝑉𝑈𝑈𝐽) → ((𝐽t 𝑈) ↾t 𝑉) = (𝐽t 𝑉))
143139, 42, 141, 142syl3anc 1323 . . . . . . . . . . . . . 14 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → ((𝐽t 𝑈) ↾t 𝑉) = (𝐽t 𝑉))
144143adantr 481 . . . . . . . . . . . . 13 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → ((𝐽t 𝑈) ↾t 𝑉) = (𝐽t 𝑉))
145137, 144eqtrd 2655 . . . . . . . . . . . 12 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → ((𝐽t 𝑈) ↾t ((𝐹𝑡) “ (𝑡 ∩ (𝐹𝑉)))) = (𝐽t 𝑉))
146122, 145oveq12d 6628 . . . . . . . . . . 11 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (((𝐶t 𝑡) ↾t (𝑡 ∩ (𝐹𝑉)))Homeo((𝐽t 𝑈) ↾t ((𝐹𝑡) “ (𝑡 ∩ (𝐹𝑉))))) = ((𝐶t (𝑡 ∩ (𝐹𝑉)))Homeo(𝐽t 𝑉)))
147118, 146eleqtrd 2700 . . . . . . . . . 10 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (𝐹 ↾ (𝑡 ∩ (𝐹𝑉))) ∈ ((𝐶t (𝑡 ∩ (𝐹𝑉)))Homeo(𝐽t 𝑉)))
148101, 147jca 554 . . . . . . . . 9 ((((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) ∧ 𝑡𝑥) → (∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {(𝑡 ∩ (𝐹𝑉))})((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅ ∧ (𝐹 ↾ (𝑡 ∩ (𝐹𝑉))) ∈ ((𝐶t (𝑡 ∩ (𝐹𝑉)))Homeo(𝐽t 𝑉))))
149148ralrimiva 2961 . . . . . . . 8 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → ∀𝑡𝑥 (∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {(𝑡 ∩ (𝐹𝑉))})((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅ ∧ (𝐹 ↾ (𝑡 ∩ (𝐹𝑉))) ∈ ((𝐶t (𝑡 ∩ (𝐹𝑉)))Homeo(𝐽t 𝑉))))
15056rgenw 2919 . . . . . . . . 9 𝑡𝑥 (𝑡 ∩ (𝐹𝑉)) ∈ V
15150cbvmptv 4715 . . . . . . . . . 10 (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = (𝑡𝑥 ↦ (𝑡 ∩ (𝐹𝑉)))
152 sneq 4163 . . . . . . . . . . . . 13 (𝑤 = (𝑡 ∩ (𝐹𝑉)) → {𝑤} = {(𝑡 ∩ (𝐹𝑉))})
153152difeq2d 3711 . . . . . . . . . . . 12 (𝑤 = (𝑡 ∩ (𝐹𝑉)) → (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {𝑤}) = (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {(𝑡 ∩ (𝐹𝑉))}))
154 ineq1 3790 . . . . . . . . . . . . 13 (𝑤 = (𝑡 ∩ (𝐹𝑉)) → (𝑤𝑧) = ((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧))
155154eqeq1d 2623 . . . . . . . . . . . 12 (𝑤 = (𝑡 ∩ (𝐹𝑉)) → ((𝑤𝑧) = ∅ ↔ ((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅))
156153, 155raleqbidv 3144 . . . . . . . . . . 11 (𝑤 = (𝑡 ∩ (𝐹𝑉)) → (∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {𝑤})(𝑤𝑧) = ∅ ↔ ∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {(𝑡 ∩ (𝐹𝑉))})((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅))
157 reseq2 5356 . . . . . . . . . . . 12 (𝑤 = (𝑡 ∩ (𝐹𝑉)) → (𝐹𝑤) = (𝐹 ↾ (𝑡 ∩ (𝐹𝑉))))
158 oveq2 6618 . . . . . . . . . . . . 13 (𝑤 = (𝑡 ∩ (𝐹𝑉)) → (𝐶t 𝑤) = (𝐶t (𝑡 ∩ (𝐹𝑉))))
159158oveq1d 6625 . . . . . . . . . . . 12 (𝑤 = (𝑡 ∩ (𝐹𝑉)) → ((𝐶t 𝑤)Homeo(𝐽t 𝑉)) = ((𝐶t (𝑡 ∩ (𝐹𝑉)))Homeo(𝐽t 𝑉)))
160157, 159eleq12d 2692 . . . . . . . . . . 11 (𝑤 = (𝑡 ∩ (𝐹𝑉)) → ((𝐹𝑤) ∈ ((𝐶t 𝑤)Homeo(𝐽t 𝑉)) ↔ (𝐹 ↾ (𝑡 ∩ (𝐹𝑉))) ∈ ((𝐶t (𝑡 ∩ (𝐹𝑉)))Homeo(𝐽t 𝑉))))
161156, 160anbi12d 746 . . . . . . . . . 10 (𝑤 = (𝑡 ∩ (𝐹𝑉)) → ((∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {𝑤})(𝑤𝑧) = ∅ ∧ (𝐹𝑤) ∈ ((𝐶t 𝑤)Homeo(𝐽t 𝑉))) ↔ (∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {(𝑡 ∩ (𝐹𝑉))})((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅ ∧ (𝐹 ↾ (𝑡 ∩ (𝐹𝑉))) ∈ ((𝐶t (𝑡 ∩ (𝐹𝑉)))Homeo(𝐽t 𝑉)))))
162151, 161ralrnmpt 6329 . . . . . . . . 9 (∀𝑡𝑥 (𝑡 ∩ (𝐹𝑉)) ∈ V → (∀𝑤 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))(∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {𝑤})(𝑤𝑧) = ∅ ∧ (𝐹𝑤) ∈ ((𝐶t 𝑤)Homeo(𝐽t 𝑉))) ↔ ∀𝑡𝑥 (∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {(𝑡 ∩ (𝐹𝑉))})((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅ ∧ (𝐹 ↾ (𝑡 ∩ (𝐹𝑉))) ∈ ((𝐶t (𝑡 ∩ (𝐹𝑉)))Homeo(𝐽t 𝑉)))))
163150, 162ax-mp 5 . . . . . . . 8 (∀𝑤 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))(∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {𝑤})(𝑤𝑧) = ∅ ∧ (𝐹𝑤) ∈ ((𝐶t 𝑤)Homeo(𝐽t 𝑉))) ↔ ∀𝑡𝑥 (∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {(𝑡 ∩ (𝐹𝑉))})((𝑡 ∩ (𝐹𝑉)) ∩ 𝑧) = ∅ ∧ (𝐹 ↾ (𝑡 ∩ (𝐹𝑉))) ∈ ((𝐶t (𝑡 ∩ (𝐹𝑉)))Homeo(𝐽t 𝑉))))
164149, 163sylibr 224 . . . . . . 7 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → ∀𝑤 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))(∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {𝑤})(𝑤𝑧) = ∅ ∧ (𝐹𝑤) ∈ ((𝐶t 𝑤)Homeo(𝐽t 𝑉))))
16573, 164jca 554 . . . . . 6 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → ( ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = (𝐹𝑉) ∧ ∀𝑤 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))(∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {𝑤})(𝑤𝑧) = ∅ ∧ (𝐹𝑤) ∈ ((𝐶t 𝑤)Homeo(𝐽t 𝑉)))))
1667cvmscbv 30983 . . . . . . . 8 𝑆 = (𝑎𝐽 ↦ {𝑏 ∈ (𝒫 𝐶 ∖ {∅}) ∣ ( 𝑏 = (𝐹𝑎) ∧ ∀𝑤𝑏 (∀𝑧 ∈ (𝑏 ∖ {𝑤})(𝑤𝑧) = ∅ ∧ (𝐹𝑤) ∈ ((𝐶t 𝑤)Homeo(𝐽t 𝑎))))})
167166cvmsval 30991 . . . . . . 7 (𝐶 ∈ Top → (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∈ (𝑆𝑉) ↔ (𝑉𝐽 ∧ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ⊆ 𝐶 ∧ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ≠ ∅) ∧ ( ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = (𝐹𝑉) ∧ ∀𝑤 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))(∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {𝑤})(𝑤𝑧) = ∅ ∧ (𝐹𝑤) ∈ ((𝐶t 𝑤)Homeo(𝐽t 𝑉)))))))
1685, 167syl 17 . . . . . 6 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∈ (𝑆𝑉) ↔ (𝑉𝐽 ∧ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ⊆ 𝐶 ∧ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ≠ ∅) ∧ ( ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) = (𝐹𝑉) ∧ ∀𝑤 ∈ ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉)))(∀𝑧 ∈ (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∖ {𝑤})(𝑤𝑧) = ∅ ∧ (𝐹𝑤) ∈ ((𝐶t 𝑤)Homeo(𝐽t 𝑉)))))))
1692, 32, 165, 168mpbir3and 1243 . . . . 5 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∈ (𝑆𝑉))
170 ne0i 3902 . . . . 5 (ran (𝑦𝑥 ↦ (𝑦 ∩ (𝐹𝑉))) ∈ (𝑆𝑉) → (𝑆𝑉) ≠ ∅)
171169, 170syl 17 . . . 4 (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) ∧ 𝑥 ∈ (𝑆𝑈)) → (𝑆𝑉) ≠ ∅)
172171ex 450 . . 3 ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) → (𝑥 ∈ (𝑆𝑈) → (𝑆𝑉) ≠ ∅))
173172exlimdv 1858 . 2 ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) → (∃𝑥 𝑥 ∈ (𝑆𝑈) → (𝑆𝑉) ≠ ∅))
1741, 173syl5bi 232 1 ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑉𝐽𝑉𝑈) → ((𝑆𝑈) ≠ ∅ → (𝑆𝑉) ≠ ∅))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wo 383  wa 384  w3a 1036   = wceq 1480  wex 1701  wcel 1987  wne 2790  wral 2907  wrex 2908  {crab 2911  Vcvv 3189  cdif 3556  cin 3558  wss 3559  c0 3896  𝒫 cpw 4135  {csn 4153   cuni 4407  cmpt 4678  ccnv 5078  dom cdm 5079  ran crn 5080  cres 5081  cima 5082  wf 5848  ontowfo 5850  1-1-ontowf1o 5851  cfv 5852  (class class class)co 6610  t crest 16013  Topctop 20630   Cn ccn 20951  Homeochmeo 21479   CovMap ccvm 30980
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 4736  ax-sep 4746  ax-nul 4754  ax-pow 4808  ax-pr 4872  ax-un 6909
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-rab 2916  df-v 3191  df-sbc 3422  df-csb 3519  df-dif 3562  df-un 3564  df-in 3566  df-ss 3573  df-pss 3575  df-nul 3897  df-if 4064  df-pw 4137  df-sn 4154  df-pr 4156  df-tp 4158  df-op 4160  df-uni 4408  df-int 4446  df-iun 4492  df-br 4619  df-opab 4679  df-mpt 4680  df-tr 4718  df-eprel 4990  df-id 4994  df-po 5000  df-so 5001  df-fr 5038  df-we 5040  df-xp 5085  df-rel 5086  df-cnv 5087  df-co 5088  df-dm 5089  df-rn 5090  df-res 5091  df-ima 5092  df-pred 5644  df-ord 5690  df-on 5691  df-lim 5692  df-suc 5693  df-iota 5815  df-fun 5854  df-fn 5855  df-f 5856  df-f1 5857  df-fo 5858  df-f1o 5859  df-fv 5860  df-ov 6613  df-oprab 6614  df-mpt2 6615  df-om 7020  df-1st 7120  df-2nd 7121  df-wrecs 7359  df-recs 7420  df-rdg 7458  df-oadd 7516  df-er 7694  df-map 7811  df-en 7908  df-fin 7911  df-fi 8269  df-rest 16015  df-topgen 16036  df-top 20631  df-topon 20648  df-bases 20674  df-cn 20954  df-hmeo 21481  df-cvm 30981
This theorem is referenced by:  cvmcov2  31000
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