Theorem cvmcov2 32524

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 1132	. . 3 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → 𝐹 ∈ (𝐶 CovMap 𝐽))
2		simp3 1134	. . . 4 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → 𝑃 ∈ 𝑈)
3		simp2 1133	. . . 4 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → 𝑈 ∈ 𝐽)
4		elunii 4845	. . . 4 ⊢ ((𝑃 ∈ 𝑈 ∧ 𝑈 ∈ 𝐽) → 𝑃 ∈ ∪ 𝐽)
5	2, 3, 4	syl2anc 586	. . 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 2823	. . . 4 ⊢ ∪ 𝐽 = ∪ 𝐽
8	6, 7	cvmcov 32512	. . 3 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑃 ∈ ∪ 𝐽) → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))
9	1, 5, 8	syl2anc 586	. 2 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))
10		inss2 4208	. . . . 5 ⊢ (𝑦 ∩ 𝑈) ⊆ 𝑈
11		vex 3499	. . . . . . 7 ⊢ 𝑦 ∈ V
12	11	inex1 5223	. . . . . 6 ⊢ (𝑦 ∩ 𝑈) ∈ V
13	12	elpw 4545	. . . . 5 ⊢ ((𝑦 ∩ 𝑈) ∈ 𝒫 𝑈 ↔ (𝑦 ∩ 𝑈) ⊆ 𝑈)
14	10, 13	mpbir 233	. . . 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 779	. . . 4 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝑃 ∈ 𝑦)
17	2	adantr 483	. . . 4 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝑃 ∈ 𝑈)
18	16, 17	elind 4173	. . 3 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝑃 ∈ (𝑦 ∩ 𝑈))
19		simprrr 780	. . . 4 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → (𝑆‘𝑦) ≠ ∅)
20	1	adantr 483	. . . . 5 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝐹 ∈ (𝐶 CovMap 𝐽))
21		cvmtop2 32510	. . . . . . 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 769	. . . . . 6 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝑦 ∈ 𝐽)
24	3	adantr 483	. . . . . 6 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → 𝑈 ∈ 𝐽)
25		inopn 21509	. . . . . 6 ⊢ ((𝐽 ∈ Top ∧ 𝑦 ∈ 𝐽 ∧ 𝑈 ∈ 𝐽) → (𝑦 ∩ 𝑈) ∈ 𝐽)
26	22, 23, 24, 25	syl3anc 1367	. . . . 5 ⊢ (((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) ∧ (𝑦 ∈ 𝐽 ∧ (𝑃 ∈ 𝑦 ∧ (𝑆‘𝑦) ≠ ∅))) → (𝑦 ∩ 𝑈) ∈ 𝐽)
27		inss1 4207	. . . . . 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 32523	. . . . 5 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ (𝑦 ∩ 𝑈) ∈ 𝐽 ∧ (𝑦 ∩ 𝑈) ⊆ 𝑦) → ((𝑆‘𝑦) ≠ ∅ → (𝑆‘(𝑦 ∩ 𝑈)) ≠ ∅))
30	20, 26, 28, 29	syl3anc 1367	. . . 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 2903	. . . . 5 ⊢ (𝑥 = (𝑦 ∩ 𝑈) → (𝑃 ∈ 𝑥 ↔ 𝑃 ∈ (𝑦 ∩ 𝑈)))
33		fveq2 6672	. . . . . 6 ⊢ (𝑥 = (𝑦 ∩ 𝑈) → (𝑆‘𝑥) = (𝑆‘(𝑦 ∩ 𝑈)))
34	33	neeq1d 3077	. . . . 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 3625	. . 3 ⊢ (((𝑦 ∩ 𝑈) ∈ 𝒫 𝑈 ∧ (𝑃 ∈ (𝑦 ∩ 𝑈) ∧ (𝑆‘(𝑦 ∩ 𝑈)) ≠ ∅)) → ∃𝑥 ∈ 𝒫 𝑈(𝑃 ∈ 𝑥 ∧ (𝑆‘𝑥) ≠ ∅))
37	15, 18, 31, 36	syl12anc 834	. 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 3293	1 ⊢ ((𝐹 ∈ (𝐶 CovMap 𝐽) ∧ 𝑈 ∈ 𝐽 ∧ 𝑃 ∈ 𝑈) → ∃𝑥 ∈ 𝒫 𝑈(𝑃 ∈ 𝑥 ∧ (𝑆‘𝑥) ≠ ∅))

Syntax hints:   → wi 4   ∧ wa 398   ∧ w3a 1083   = wceq 1537   ∈ wcel 2114   ≠ wne 3018  ∀wral 3140  ∃wrex 3141  {crab 3144   ∖ cdif 3935   ∩ cin 3937   ⊆ wss 3938  ∅c0 4293  𝒫 cpw 4541  {csn 4569  ∪ cuni 4840   ↦ cmpt 5148  ^◡ccnv 5556   ↾ cres 5559   “ cima 5560  ‘cfv 6357  (class class class)co 7158   ↾_t crest 16696  Topctop 21503  Homeochmeo 22363   CovMap ccvm 32504

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-rep 5192  ax-sep 5205  ax-nul 5212  ax-pow 5268  ax-pr 5332  ax-un 7463

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ne 3019  df-ral 3145  df-rex 3146  df-reu 3147  df-rab 3149  df-v 3498  df-sbc 3775  df-csb 3886  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-pss 3956  df-nul 4294  df-if 4470  df-pw 4543  df-sn 4570  df-pr 4572  df-tp 4574  df-op 4576  df-uni 4841  df-int 4879  df-iun 4923  df-br 5069  df-opab 5131  df-mpt 5149  df-tr 5175  df-id 5462  df-eprel 5467  df-po 5476  df-so 5477  df-fr 5516  df-we 5518  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-rn 5568  df-res 5569  df-ima 5570  df-pred 6150  df-ord 6196  df-on 6197  df-lim 6198  df-suc 6199  df-iota 6316  df-fun 6359  df-fn 6360  df-f 6361  df-f1 6362  df-fo 6363  df-f1o 6364  df-fv 6365  df-ov 7161  df-oprab 7162  df-mpo 7163  df-om 7583  df-1st 7691  df-2nd 7692  df-wrecs 7949  df-recs 8010  df-rdg 8048  df-oadd 8108  df-er 8291  df-map 8410  df-en 8512  df-fin 8515  df-fi 8877  df-rest 16698  df-topgen 16719  df-top 21504  df-topon 21521  df-bases 21556  df-cn 21837  df-hmeo 22365  df-cvm 32505

This theorem is referenced by: (None)