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Theorem kgencmp 22604
Description: The compact generator topology is the same as the original topology on compact subspaces. (Contributed by Mario Carneiro, 20-Mar-2015.)
Assertion
Ref Expression
kgencmp ((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) → (𝐽t 𝐾) = ((𝑘Gen‘𝐽) ↾t 𝐾))

Proof of Theorem kgencmp
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 kgenftop 22599 . . . 4 (𝐽 ∈ Top → (𝑘Gen‘𝐽) ∈ Top)
21adantr 480 . . 3 ((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) → (𝑘Gen‘𝐽) ∈ Top)
3 kgenss 22602 . . . 4 (𝐽 ∈ Top → 𝐽 ⊆ (𝑘Gen‘𝐽))
43adantr 480 . . 3 ((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) → 𝐽 ⊆ (𝑘Gen‘𝐽))
5 ssrest 22235 . . 3 (((𝑘Gen‘𝐽) ∈ Top ∧ 𝐽 ⊆ (𝑘Gen‘𝐽)) → (𝐽t 𝐾) ⊆ ((𝑘Gen‘𝐽) ↾t 𝐾))
62, 4, 5syl2anc 583 . 2 ((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) → (𝐽t 𝐾) ⊆ ((𝑘Gen‘𝐽) ↾t 𝐾))
7 cmptop 22454 . . . . . 6 ((𝐽t 𝐾) ∈ Comp → (𝐽t 𝐾) ∈ Top)
87adantl 481 . . . . 5 ((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) → (𝐽t 𝐾) ∈ Top)
9 restrcl 22216 . . . . . 6 ((𝐽t 𝐾) ∈ Top → (𝐽 ∈ V ∧ 𝐾 ∈ V))
109simprd 495 . . . . 5 ((𝐽t 𝐾) ∈ Top → 𝐾 ∈ V)
118, 10syl 17 . . . 4 ((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) → 𝐾 ∈ V)
12 restval 17054 . . . 4 (((𝑘Gen‘𝐽) ∈ Top ∧ 𝐾 ∈ V) → ((𝑘Gen‘𝐽) ↾t 𝐾) = ran (𝑥 ∈ (𝑘Gen‘𝐽) ↦ (𝑥𝐾)))
132, 11, 12syl2anc 583 . . 3 ((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) → ((𝑘Gen‘𝐽) ↾t 𝐾) = ran (𝑥 ∈ (𝑘Gen‘𝐽) ↦ (𝑥𝐾)))
14 simpr 484 . . . . . 6 (((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) ∧ 𝑥 ∈ (𝑘Gen‘𝐽)) → 𝑥 ∈ (𝑘Gen‘𝐽))
15 simplr 765 . . . . . 6 (((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) ∧ 𝑥 ∈ (𝑘Gen‘𝐽)) → (𝐽t 𝐾) ∈ Comp)
16 kgeni 22596 . . . . . 6 ((𝑥 ∈ (𝑘Gen‘𝐽) ∧ (𝐽t 𝐾) ∈ Comp) → (𝑥𝐾) ∈ (𝐽t 𝐾))
1714, 15, 16syl2anc 583 . . . . 5 (((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) ∧ 𝑥 ∈ (𝑘Gen‘𝐽)) → (𝑥𝐾) ∈ (𝐽t 𝐾))
1817fmpttd 6971 . . . 4 ((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) → (𝑥 ∈ (𝑘Gen‘𝐽) ↦ (𝑥𝐾)):(𝑘Gen‘𝐽)⟶(𝐽t 𝐾))
1918frnd 6592 . . 3 ((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) → ran (𝑥 ∈ (𝑘Gen‘𝐽) ↦ (𝑥𝐾)) ⊆ (𝐽t 𝐾))
2013, 19eqsstrd 3955 . 2 ((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) → ((𝑘Gen‘𝐽) ↾t 𝐾) ⊆ (𝐽t 𝐾))
216, 20eqssd 3934 1 ((𝐽 ∈ Top ∧ (𝐽t 𝐾) ∈ Comp) → (𝐽t 𝐾) = ((𝑘Gen‘𝐽) ↾t 𝐾))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1539  wcel 2108  Vcvv 3422  cin 3882  wss 3883  cmpt 5153  ran crn 5581  cfv 6418  (class class class)co 7255  t crest 17048  Topctop 21950  Compccmp 22445  𝑘Genckgen 22592
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-rep 5205  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-ral 3068  df-rex 3069  df-reu 3070  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3902  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-tp 4563  df-op 4565  df-uni 4837  df-int 4877  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-tr 5188  df-id 5480  df-eprel 5486  df-po 5494  df-so 5495  df-fr 5535  df-we 5537  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-ord 6254  df-on 6255  df-lim 6256  df-suc 6257  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-ov 7258  df-oprab 7259  df-mpo 7260  df-om 7688  df-1st 7804  df-2nd 7805  df-en 8692  df-fin 8695  df-fi 9100  df-rest 17050  df-topgen 17071  df-top 21951  df-topon 21968  df-bases 22004  df-cmp 22446  df-kgen 22593
This theorem is referenced by:  kgencmp2  22605  kgenidm  22606
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