Theorem cvmcov2 35280

Description: The covering map property can be restricted to an open subset. (Contributed by Mario Carneiro, 7-Jul-2015.)

Hypothesis

Ref	Expression
cvmcov.1	⊢ 𝑆 = (𝑘 ∈ 𝐽 ↦ {𝑠 ∈ (𝒫 𝐶 ∖ {∅}) ∣ (∪ 𝑠 = (◡𝐹 “ 𝑘) ∧ ∀𝑢 ∈ 𝑠 (∀𝑣 ∈ (𝑠 ∖ {𝑢})(𝑢 ∩ 𝑣) = ∅ ∧ (𝐹 ↾ 𝑢) ∈ ((𝐶 ↾t 𝑢)Homeo(𝐽 ↾t 𝑘))))})

Assertion

Ref	Expression
cvmcov2	⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → ∃𝑥 ∈ 𝒫 𝑈(𝑃 ∈ 𝑥 ∧ (𝑆‘𝑥) ≠ ∅))

Distinct variable groups:   𝑘,𝑠,𝑢,𝑣,𝑥,𝐶   𝑘,𝐹,𝑠,𝑢,𝑣,𝑥   𝑃,𝑘,𝑥   𝑘,𝐽,𝑠,𝑢,𝑣,𝑥   𝑥,𝑆   𝑈,𝑘,𝑠,𝑢,𝑣,𝑥

Allowed substitution hints:   𝑃(𝑣,𝑢,𝑠)   𝑆(𝑣,𝑢,𝑘,𝑠)

Proof of Theorem cvmcov2

Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		simp1 1137	. . 3 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → 𝐹 ∈ (𝐶 CovMap 𝐽))
2		simp3 1139	. . . 4 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → 𝑃 ∈ 𝑈)
3		simp2 1138	. . . 4 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → 𝑈 ∈ 𝐽)
4		elunii 4912	. . . 4 ⊢ ((𝑃 ∈ 𝑈 ∧ 𝑈 ∈ 𝐽) → 𝑃 ∈ ∪ 𝐽)
5	2, 3, 4	syl2anc 584	. . 3 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → 𝑃 ∈ ∪ 𝐽)
6		cvmcov.1	. . . 4 ⊢ 𝑆 = (𝑘 ∈ 𝐽 ↦ {𝑠 ∈ (𝒫 𝐶 ∖ {∅}) ∣ (∪ 𝑠 = (◡𝐹 “ 𝑘) ∧ ∀𝑢 ∈ 𝑠 (∀𝑣 ∈ (𝑠 ∖ {𝑢})(𝑢 ∩ 𝑣) = ∅ ∧ (𝐹 ↾ 𝑢) ∈ ((𝐶 ↾t 𝑢)Homeo(𝐽 ↾t 𝑘))))})
7		eqid 2737	. . . 4 ⊢ ∪ 𝐽 = ∪ 𝐽
8	6, 7	cvmcov 35268	. . 3 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑃 ∈ ∪ 𝐽) → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))
9	1, 5, 8	syl2anc 584	. 2 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))
10		inss2 4238	. . . . 5 ⊢ (𝑦 ∩ 𝑈) ⊆ 𝑈
11		vex 3484	. . . . . . 7 ⊢ 𝑦 ∈ V
12	11	inex1 5317	. . . . . 6 ⊢ (𝑦 ∩ 𝑈) ∈ V
13	12	elpw 4604	. . . . 5 ⊢ ((𝑦 ∩ 𝑈) ∈ 𝒫 𝑈 ↔ (𝑦 ∩ 𝑈) ⊆ 𝑈)
14	10, 13	mpbir 231	. . . 4 ⊢ (𝑦 ∩ 𝑈) ∈ 𝒫 𝑈
15	14	a1i 11	. . 3 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → (𝑦 ∩ 𝑈) ∈ 𝒫 𝑈)
16		simprrl 781	. . . 4 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝑃 ∈ 𝑦)
17	2	adantr 480	. . . 4 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝑃 ∈ 𝑈)
18	16, 17	elind 4200	. . 3 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝑃 ∈ (𝑦 ∩ 𝑈))
19		simprrr 782	. . . 4 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → (𝑆‘𝑦) ≠ ∅)
20	1	adantr 480	. . . . 5 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝐹 ∈ (𝐶 CovMap 𝐽))
21		cvmtop2 35266	. . . . . . 7 ⊢ (𝐹 ∈ (𝐶 CovMap 𝐽) → 𝐽 ∈ Top)
22	20, 21	syl 17	. . . . . 6 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝐽 ∈ Top)
23		simprl 771	. . . . . 6 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝑦 ∈ 𝐽)
24	3	adantr 480	. . . . . 6 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝑈 ∈ 𝐽)
25		inopn 22905	. . . . . 6 ⊢ ((𝐽 ∈ Top ∧ 𝑦 ∈ 𝐽 ∧ 𝑈 ∈ 𝐽) → (𝑦 ∩ 𝑈) ∈ 𝐽)
26	22, 23, 24, 25	syl3anc 1373	. . . . 5 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → (𝑦 ∩ 𝑈) ∈ 𝐽)
27		inss1 4237	. . . . . 6 ⊢ (𝑦 ∩ 𝑈) ⊆ 𝑦
28	27	a1i 11	. . . . 5 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → (𝑦 ∩ 𝑈) ⊆ 𝑦)
29	6	cvmsss2 35279	. . . . 5 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ (𝑦 ∩ 𝑈) ∈ 𝐽 ∧ (𝑦 ∩ 𝑈) ⊆ 𝑦) → ((𝑆‘𝑦) ≠ ∅ → (𝑆‘(𝑦 ∩ 𝑈)) ≠ ∅))
30	20, 26, 28, 29	syl3anc 1373	. . . 4 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → ((𝑆‘𝑦) ≠ ∅ → (𝑆‘(𝑦 ∩ 𝑈)) ≠ ∅))
31	19, 30	mpd 15	. . 3 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → (𝑆‘(𝑦 ∩ 𝑈)) ≠ ∅)
32		eleq2 2830	. . . . 5 ⊢ (𝑥 = (𝑦 ∩ 𝑈) → (𝑃 ∈ 𝑥 ↔ 𝑃 ∈ (𝑦 ∩ 𝑈)))
33		fveq2 6906	. . . . . 6 ⊢ (𝑥 = (𝑦 ∩ 𝑈) → (𝑆‘𝑥) = (𝑆‘(𝑦 ∩ 𝑈)))
34	33	neeq1d 3000	. . . . 5 ⊢ (𝑥 = (𝑦 ∩ 𝑈) → ((𝑆‘𝑥) ≠ ∅ ↔ (𝑆‘(𝑦 ∩ 𝑈)) ≠ ∅))
35	32, 34	anbi12d 632	. . . 4 ⊢ (𝑥 = (𝑦 ∩ 𝑈) → ((𝑃 ∈ 𝑥 ∧ (𝑆‘𝑥) ≠ ∅) ↔ (𝑃 ∈ (𝑦 ∩ 𝑈) ∧ (𝑆‘(𝑦 ∩ 𝑈)) ≠ ∅)))
36	35	rspcev 3622	. . 3 ⊢ (((𝑦 ∩ 𝑈) ∈ 𝒫 𝑈 ∧ (𝑃 ∈ (𝑦 ∩ 𝑈) ∧ (𝑆‘(𝑦 ∩ 𝑈)) ≠ ∅)) → ∃𝑥 ∈ 𝒫 𝑈(𝑃 ∈ 𝑥 ∧ (𝑆‘𝑥) ≠ ∅))
37	15, 18, 31, 36	syl12anc 837	. 2 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → ∃𝑥 ∈ 𝒫 𝑈(𝑃 ∈ 𝑥 ∧ (𝑆‘𝑥) ≠ ∅))
38	9, 37	rexlimddv 3161	1 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → ∃𝑥 ∈ 𝒫 𝑈(𝑃 ∈ 𝑥 ∧ (𝑆‘𝑥) ≠ ∅))

Syntax hints:   → wi 4   ∧ wa 395   ∧ w3a 1087   = wceq 1540   ∈ wcel 2108   ≠ wne 2940  ∀wral 3061  ∃wrex 3070  {crab 3436   ∖ cdif 3948   ∩ cin 3950   ⊆ wss 3951  ∅c0 4333  𝒫 cpw 4600  {csn 4626  ∪ cuni 4907   ↦ cmpt 5225  ^◡ccnv 5684   ↾ cres 5687   “ cima 5688  ‘cfv 6561  (class class class)co 7431   ↾_t crest 17465  Topctop 22899  Homeochmeo 23761   CovMap ccvm 35260

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2157  ax-12 2177  ax-ext 2708  ax-rep 5279  ax-sep 5296  ax-nul 5306  ax-pow 5365  ax-pr 5432  ax-un 7755

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3or 1088  df-3an 1089  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-mo 2540  df-eu 2569  df-clab 2715  df-cleq 2729  df-clel 2816  df-nfc 2892  df-ne 2941  df-ral 3062  df-rex 3071  df-reu 3381  df-rab 3437  df-v 3482  df-sbc 3789  df-csb 3900  df-dif 3954  df-un 3956  df-in 3958  df-ss 3968  df-pss 3971  df-nul 4334  df-if 4526  df-pw 4602  df-sn 4627  df-pr 4629  df-op 4633  df-uni 4908  df-int 4947  df-iun 4993  df-br 5144  df-opab 5206  df-mpt 5226  df-tr 5260  df-id 5578  df-eprel 5584  df-po 5592  df-so 5593  df-fr 5637  df-we 5639  df-xp 5691  df-rel 5692  df-cnv 5693  df-co 5694  df-dm 5695  df-rn 5696  df-res 5697  df-ima 5698  df-ord 6387  df-on 6388  df-lim 6389  df-suc 6390  df-iota 6514  df-fun 6563  df-fn 6564  df-f 6565  df-f1 6566  df-fo 6567  df-f1o 6568  df-fv 6569  df-ov 7434  df-oprab 7435  df-mpo 7436  df-om 7888  df-1st 8014  df-2nd 8015  df-map 8868  df-en 8986  df-fin 8989  df-fi 9451  df-rest 17467  df-topgen 17488  df-top 22900  df-topon 22917  df-bases 22953  df-cn 23235  df-hmeo 23763  df-cvm 35261

This theorem is referenced by: (None)