Theorem kgencmp2 22148

Description: The compact generator topology has the same compact sets as the original topology. (Contributed by Mario Carneiro, 20-Mar-2015.)

Assertion

Ref	Expression
kgencmp2	⊢ (𝐽 ∈ Top → ((𝐽 ↾t 𝐾) ∈ Comp ↔ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp))

Proof of Theorem kgencmp2

Step	Hyp	Ref	Expression
1		kgencmp 22147	. . 3 ⊢ ((𝐽 ∈ Top ∧ (𝐽 ↾t 𝐾) ∈ Comp) → (𝐽 ↾t 𝐾) = ((𝑘Gen‘𝐽) ↾t 𝐾))
2		simpr 487	. . 3 ⊢ ((𝐽 ∈ Top ∧ (𝐽 ↾t 𝐾) ∈ Comp) → (𝐽 ↾t 𝐾) ∈ Comp)
3	1, 2	eqeltrrd 2914	. 2 ⊢ ((𝐽 ∈ Top ∧ (𝐽 ↾t 𝐾) ∈ Comp) → ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp)
4		cmptop 21997	. . . . . . 7 ⊢ (((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp → ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Top)
5		restrcl 21759	. . . . . . . 8 ⊢ (((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Top → ((𝑘Gen‘𝐽) ∈ V ∧ 𝐾 ∈ V))
6	5	simprd 498	. . . . . . 7 ⊢ (((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Top → 𝐾 ∈ V)
7	4, 6	syl 17	. . . . . 6 ⊢ (((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp → 𝐾 ∈ V)
8		resttop 21762	. . . . . 6 ⊢ ((𝐽 ∈ Top ∧ 𝐾 ∈ V) → (𝐽 ↾t 𝐾) ∈ Top)
9	7, 8	sylan2 594	. . . . 5 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → (𝐽 ↾t 𝐾) ∈ Top)
10		toptopon2 21520	. . . . 5 ⊢ ((𝐽 ↾t 𝐾) ∈ Top ↔ (𝐽 ↾t 𝐾) ∈ (TopOn‘∪ (𝐽 ↾t 𝐾)))
11	9, 10	sylib 220	. . . 4 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → (𝐽 ↾t 𝐾) ∈ (TopOn‘∪ (𝐽 ↾t 𝐾)))
12		eqid 2821	. . . . . . . . 9 ⊢ ∪ 𝐽 = ∪ 𝐽
13	12	kgenuni 22141	. . . . . . . 8 ⊢ (𝐽 ∈ Top → ∪ 𝐽 = ∪ (𝑘Gen‘𝐽))
14	13	adantr 483	. . . . . . 7 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → ∪ 𝐽 = ∪ (𝑘Gen‘𝐽))
15	14	ineq2d 4188	. . . . . 6 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → (𝐾 ∩ ∪ 𝐽) = (𝐾 ∩ ∪ (𝑘Gen‘𝐽)))
16	12	restuni2 21769	. . . . . . 7 ⊢ ((𝐽 ∈ Top ∧ 𝐾 ∈ V) → (𝐾 ∩ ∪ 𝐽) = ∪ (𝐽 ↾t 𝐾))
17	7, 16	sylan2 594	. . . . . 6 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → (𝐾 ∩ ∪ 𝐽) = ∪ (𝐽 ↾t 𝐾))
18		kgenftop 22142	. . . . . . 7 ⊢ (𝐽 ∈ Top → (𝑘Gen‘𝐽) ∈ Top)
19		eqid 2821	. . . . . . . 8 ⊢ ∪ (𝑘Gen‘𝐽) = ∪ (𝑘Gen‘𝐽)
20	19	restuni2 21769	. . . . . . 7 ⊢ (((𝑘Gen‘𝐽) ∈ Top ∧ 𝐾 ∈ V) → (𝐾 ∩ ∪ (𝑘Gen‘𝐽)) = ∪ ((𝑘Gen‘𝐽) ↾t 𝐾))
21	18, 7, 20	syl2an 597	. . . . . 6 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → (𝐾 ∩ ∪ (𝑘Gen‘𝐽)) = ∪ ((𝑘Gen‘𝐽) ↾t 𝐾))
22	15, 17, 21	3eqtr3d 2864	. . . . 5 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → ∪ (𝐽 ↾t 𝐾) = ∪ ((𝑘Gen‘𝐽) ↾t 𝐾))
23	22	fveq2d 6668	. . . 4 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → (TopOn‘∪ (𝐽 ↾t 𝐾)) = (TopOn‘∪ ((𝑘Gen‘𝐽) ↾t 𝐾)))
24	11, 23	eleqtrd 2915	. . 3 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → (𝐽 ↾t 𝐾) ∈ (TopOn‘∪ ((𝑘Gen‘𝐽) ↾t 𝐾)))
25		simpr 487	. . 3 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp)
26		kgenss 22145	. . . . 5 ⊢ (𝐽 ∈ Top → 𝐽 ⊆ (𝑘Gen‘𝐽))
27	26	adantr 483	. . . 4 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → 𝐽 ⊆ (𝑘Gen‘𝐽))
28		ssrest 21778	. . . 4 ⊢ (((𝑘Gen‘𝐽) ∈ Top ∧ 𝐽 ⊆ (𝑘Gen‘𝐽)) → (𝐽 ↾t 𝐾) ⊆ ((𝑘Gen‘𝐽) ↾t 𝐾))
29	18, 27, 28	syl2an2r 683	. . 3 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → (𝐽 ↾t 𝐾) ⊆ ((𝑘Gen‘𝐽) ↾t 𝐾))
30		eqid 2821	. . . 4 ⊢ ∪ ((𝑘Gen‘𝐽) ↾t 𝐾) = ∪ ((𝑘Gen‘𝐽) ↾t 𝐾)
31	30	sscmp 22007	. . 3 ⊢ (((𝐽 ↾t 𝐾) ∈ (TopOn‘∪ ((𝑘Gen‘𝐽) ↾t 𝐾)) ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp ∧ (𝐽 ↾t 𝐾) ⊆ ((𝑘Gen‘𝐽) ↾t 𝐾)) → (𝐽 ↾t 𝐾) ∈ Comp)
32	24, 25, 29, 31	syl3anc 1367	. 2 ⊢ ((𝐽 ∈ Top ∧ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp) → (𝐽 ↾t 𝐾) ∈ Comp)
33	3, 32	impbida 799	1 ⊢ (𝐽 ∈ Top → ((𝐽 ↾t 𝐾) ∈ Comp ↔ ((𝑘Gen‘𝐽) ↾t 𝐾) ∈ Comp))

Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 398   = wceq 1533   ∈ wcel 2110  Vcvv 3494   ∩ cin 3934   ⊆ wss 3935  ∪ cuni 4831  ‘cfv 6349  (class class class)co 7150   ↾_t crest 16688  Topctop 21495  TopOnctopon 21512  Compccmp 21988  𝑘Genckgen 22135

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2157  ax-12 2173  ax-ext 2793  ax-rep 5182  ax-sep 5195  ax-nul 5202  ax-pow 5258  ax-pr 5321  ax-un 7455

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-reu 3145  df-rab 3147  df-v 3496  df-sbc 3772  df-csb 3883  df-dif 3938  df-un 3940  df-in 3942  df-ss 3951  df-pss 3953  df-nul 4291  df-if 4467  df-pw 4540  df-sn 4561  df-pr 4563  df-tp 4565  df-op 4567  df-uni 4832  df-int 4869  df-iun 4913  df-br 5059  df-opab 5121  df-mpt 5139  df-tr 5165  df-id 5454  df-eprel 5459  df-po 5468  df-so 5469  df-fr 5508  df-we 5510  df-xp 5555  df-rel 5556  df-cnv 5557  df-co 5558  df-dm 5559  df-rn 5560  df-res 5561  df-ima 5562  df-pred 6142  df-ord 6188  df-on 6189  df-lim 6190  df-suc 6191  df-iota 6308  df-fun 6351  df-fn 6352  df-f 6353  df-f1 6354  df-fo 6355  df-f1o 6356  df-fv 6357  df-ov 7153  df-oprab 7154  df-mpo 7155  df-om 7575  df-1st 7683  df-2nd 7684  df-wrecs 7941  df-recs 8002  df-rdg 8040  df-oadd 8100  df-er 8283  df-en 8504  df-fin 8507  df-fi 8869  df-rest 16690  df-topgen 16711  df-top 21496  df-topon 21513  df-bases 21548  df-cmp 21989  df-kgen 22136

This theorem is referenced by:  kgenidm  22149