Theorem llycmpkgen 23576

Description: A locally compact space is compactly generated. (Contributed by Mario Carneiro, 21-Mar-2015.)

Assertion

Ref	Expression
llycmpkgen	⊢ (𝐽 ∈ 𝑛-Locally Comp → 𝐽 ∈ ran 𝑘Gen)

Proof of Theorem llycmpkgen

Dummy variables 𝑘 𝑥 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2735	. 2 ⊢ ∪ 𝐽 = ∪ 𝐽
2		nllytop 23497	. 2 ⊢ (𝐽 ∈ 𝑛-Locally Comp → 𝐽 ∈ Top)
3		simpl 482	. . . 4 ⊢ ((𝐽 ∈ 𝑛-Locally Comp ∧ 𝑥 ∈ ∪ 𝐽) → 𝐽 ∈ 𝑛-Locally Comp)
4	1	topopn 22928	. . . . . 6 ⊢ (𝐽 ∈ Top → ∪ 𝐽 ∈ 𝐽)
5	2, 4	syl 17	. . . . 5 ⊢ (𝐽 ∈ 𝑛-Locally Comp → ∪ 𝐽 ∈ 𝐽)
6	5	adantr 480	. . . 4 ⊢ ((𝐽 ∈ 𝑛-Locally Comp ∧ 𝑥 ∈ ∪ 𝐽) → ∪ 𝐽 ∈ 𝐽)
7		simpr 484	. . . 4 ⊢ ((𝐽 ∈ 𝑛-Locally Comp ∧ 𝑥 ∈ ∪ 𝐽) → 𝑥 ∈ ∪ 𝐽)
8		nllyi 23499	. . . 4 ⊢ ((𝐽 ∈ 𝑛-Locally Comp ∧ ∪ 𝐽 ∈ 𝐽 ∧ 𝑥 ∈ ∪ 𝐽) → ∃𝑘 ∈ ((nei‘𝐽)‘{𝑥})(𝑘 ⊆ ∪ 𝐽 ∧ (𝐽 ↾t 𝑘) ∈ Comp))
9	3, 6, 7, 8	syl3anc 1370	. . 3 ⊢ ((𝐽 ∈ 𝑛-Locally Comp ∧ 𝑥 ∈ ∪ 𝐽) → ∃𝑘 ∈ ((nei‘𝐽)‘{𝑥})(𝑘 ⊆ ∪ 𝐽 ∧ (𝐽 ↾t 𝑘) ∈ Comp))
10		simpr 484	. . . 4 ⊢ ((𝑘 ⊆ ∪ 𝐽 ∧ (𝐽 ↾t 𝑘) ∈ Comp) → (𝐽 ↾t 𝑘) ∈ Comp)
11	10	reximi 3082	. . 3 ⊢ (∃𝑘 ∈ ((nei‘𝐽)‘{𝑥})(𝑘 ⊆ ∪ 𝐽 ∧ (𝐽 ↾t 𝑘) ∈ Comp) → ∃𝑘 ∈ ((nei‘𝐽)‘{𝑥})(𝐽 ↾t 𝑘) ∈ Comp)
12	9, 11	syl 17	. 2 ⊢ ((𝐽 ∈ 𝑛-Locally Comp ∧ 𝑥 ∈ ∪ 𝐽) → ∃𝑘 ∈ ((nei‘𝐽)‘{𝑥})(𝐽 ↾t 𝑘) ∈ Comp)
13	1, 2, 12	llycmpkgen2 23574	1 ⊢ (𝐽 ∈ 𝑛-Locally Comp → 𝐽 ∈ ran 𝑘Gen)

Syntax hints:   → wi 4   ∧ wa 395   ∈ wcel 2106  ∃wrex 3068   ⊆ wss 3963  {csn 4631  ∪ cuni 4912  ran crn 5690  ‘cfv 6563  (class class class)co 7431   ↾_t crest 17467  Topctop 22915  neicnei 23121  Compccmp 23410  𝑛-Locally cnlly 23489  𝑘Genckgen 23557

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 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-10 2139  ax-11 2155  ax-12 2175  ax-ext 2706  ax-rep 5285  ax-sep 5302  ax-nul 5312  ax-pow 5371  ax-pr 5438  ax-un 7754

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1540  df-fal 1550  df-ex 1777  df-nf 1781  df-sb 2063  df-mo 2538  df-eu 2567  df-clab 2713  df-cleq 2727  df-clel 2814  df-nfc 2890  df-ne 2939  df-ral 3060  df-rex 3069  df-reu 3379  df-rab 3434  df-v 3480  df-sbc 3792  df-csb 3909  df-dif 3966  df-un 3968  df-in 3970  df-ss 3980  df-pss 3983  df-nul 4340  df-if 4532  df-pw 4607  df-sn 4632  df-pr 4634  df-op 4638  df-uni 4913  df-int 4952  df-iun 4998  df-br 5149  df-opab 5211  df-mpt 5232  df-tr 5266  df-id 5583  df-eprel 5589  df-po 5597  df-so 5598  df-fr 5641  df-we 5643  df-xp 5695  df-rel 5696  df-cnv 5697  df-co 5698  df-dm 5699  df-rn 5700  df-res 5701  df-ima 5702  df-ord 6389  df-on 6390  df-lim 6391  df-suc 6392  df-iota 6516  df-fun 6565  df-fn 6566  df-f 6567  df-f1 6568  df-fo 6569  df-f1o 6570  df-fv 6571  df-ov 7434  df-oprab 7435  df-mpo 7436  df-om 7888  df-1st 8013  df-2nd 8014  df-en 8985  df-fin 8988  df-fi 9449  df-rest 17469  df-topgen 17490  df-top 22916  df-topon 22933  df-bases 22969  df-ntr 23044  df-nei 23122  df-cmp 23411  df-nlly 23491  df-kgen 23558

This theorem is referenced by:  txkgen  23676