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Theorem ressusp 23324
Description: The restriction of a uniform topological space to an open set is a uniform space. (Contributed by Thierry Arnoux, 16-Dec-2017.)
Hypotheses
Ref Expression
ressusp.1 𝐵 = (Base‘𝑊)
ressusp.2 𝐽 = (TopOpen‘𝑊)
Assertion
Ref Expression
ressusp ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (𝑊s 𝐴) ∈ UnifSp)

Proof of Theorem ressusp
StepHypRef Expression
1 ressuss 23322 . . . . 5 (𝐴𝐽 → (UnifSt‘(𝑊s 𝐴)) = ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)))
213ad2ant3 1133 . . . 4 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (UnifSt‘(𝑊s 𝐴)) = ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)))
3 simp1 1134 . . . . . . 7 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝑊 ∈ UnifSp)
4 ressusp.1 . . . . . . . 8 𝐵 = (Base‘𝑊)
5 eqid 2738 . . . . . . . 8 (UnifSt‘𝑊) = (UnifSt‘𝑊)
6 ressusp.2 . . . . . . . 8 𝐽 = (TopOpen‘𝑊)
74, 5, 6isusp 23321 . . . . . . 7 (𝑊 ∈ UnifSp ↔ ((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐽 = (unifTop‘(UnifSt‘𝑊))))
83, 7sylib 217 . . . . . 6 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → ((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐽 = (unifTop‘(UnifSt‘𝑊))))
98simpld 494 . . . . 5 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (UnifSt‘𝑊) ∈ (UnifOn‘𝐵))
10 simp2 1135 . . . . . . 7 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝑊 ∈ TopSp)
114, 6istps 21991 . . . . . . 7 (𝑊 ∈ TopSp ↔ 𝐽 ∈ (TopOn‘𝐵))
1210, 11sylib 217 . . . . . 6 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐽 ∈ (TopOn‘𝐵))
13 simp3 1136 . . . . . 6 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐴𝐽)
14 toponss 21984 . . . . . 6 ((𝐽 ∈ (TopOn‘𝐵) ∧ 𝐴𝐽) → 𝐴𝐵)
1512, 13, 14syl2anc 583 . . . . 5 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐴𝐵)
16 trust 23289 . . . . 5 (((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐴𝐵) → ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)) ∈ (UnifOn‘𝐴))
179, 15, 16syl2anc 583 . . . 4 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)) ∈ (UnifOn‘𝐴))
182, 17eqeltrd 2839 . . 3 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (UnifSt‘(𝑊s 𝐴)) ∈ (UnifOn‘𝐴))
19 eqid 2738 . . . . . 6 (𝑊s 𝐴) = (𝑊s 𝐴)
2019, 4ressbas2 16875 . . . . 5 (𝐴𝐵𝐴 = (Base‘(𝑊s 𝐴)))
2115, 20syl 17 . . . 4 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐴 = (Base‘(𝑊s 𝐴)))
2221fveq2d 6760 . . 3 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (UnifOn‘𝐴) = (UnifOn‘(Base‘(𝑊s 𝐴))))
2318, 22eleqtrd 2841 . 2 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (UnifSt‘(𝑊s 𝐴)) ∈ (UnifOn‘(Base‘(𝑊s 𝐴))))
248simprd 495 . . . . 5 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐽 = (unifTop‘(UnifSt‘𝑊)))
2513, 24eleqtrd 2841 . . . 4 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐴 ∈ (unifTop‘(UnifSt‘𝑊)))
26 restutopopn 23298 . . . 4 (((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐴 ∈ (unifTop‘(UnifSt‘𝑊))) → ((unifTop‘(UnifSt‘𝑊)) ↾t 𝐴) = (unifTop‘((UnifSt‘𝑊) ↾t (𝐴 × 𝐴))))
279, 25, 26syl2anc 583 . . 3 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → ((unifTop‘(UnifSt‘𝑊)) ↾t 𝐴) = (unifTop‘((UnifSt‘𝑊) ↾t (𝐴 × 𝐴))))
2824oveq1d 7270 . . 3 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (𝐽t 𝐴) = ((unifTop‘(UnifSt‘𝑊)) ↾t 𝐴))
292fveq2d 6760 . . 3 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (unifTop‘(UnifSt‘(𝑊s 𝐴))) = (unifTop‘((UnifSt‘𝑊) ↾t (𝐴 × 𝐴))))
3027, 28, 293eqtr4d 2788 . 2 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (𝐽t 𝐴) = (unifTop‘(UnifSt‘(𝑊s 𝐴))))
31 eqid 2738 . . 3 (Base‘(𝑊s 𝐴)) = (Base‘(𝑊s 𝐴))
32 eqid 2738 . . 3 (UnifSt‘(𝑊s 𝐴)) = (UnifSt‘(𝑊s 𝐴))
3319, 6resstopn 22245 . . 3 (𝐽t 𝐴) = (TopOpen‘(𝑊s 𝐴))
3431, 32, 33isusp 23321 . 2 ((𝑊s 𝐴) ∈ UnifSp ↔ ((UnifSt‘(𝑊s 𝐴)) ∈ (UnifOn‘(Base‘(𝑊s 𝐴))) ∧ (𝐽t 𝐴) = (unifTop‘(UnifSt‘(𝑊s 𝐴)))))
3523, 30, 34sylanbrc 582 1 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (𝑊s 𝐴) ∈ UnifSp)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  w3a 1085   = wceq 1539  wcel 2108  wss 3883   × cxp 5578  cfv 6418  (class class class)co 7255  Basecbs 16840  s cress 16867  t crest 17048  TopOpenctopn 17049  TopOnctopon 21967  TopSpctps 21989  UnifOncust 23259  unifTopcutop 23290  UnifStcuss 23313  UnifSpcusp 23314
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  ax-cnex 10858  ax-resscn 10859  ax-1cn 10860  ax-icn 10861  ax-addcl 10862  ax-addrcl 10863  ax-mulcl 10864  ax-mulrcl 10865  ax-mulcom 10866  ax-addass 10867  ax-mulass 10868  ax-distr 10869  ax-i2m1 10870  ax-1ne0 10871  ax-1rid 10872  ax-rnegex 10873  ax-rrecex 10874  ax-cnre 10875  ax-pre-lttri 10876  ax-pre-lttrn 10877  ax-pre-ltadd 10878  ax-pre-mulgt0 10879
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-nel 3049  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-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-pred 6191  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-riota 7212  df-ov 7258  df-oprab 7259  df-mpo 7260  df-om 7688  df-1st 7804  df-2nd 7805  df-frecs 8068  df-wrecs 8099  df-recs 8173  df-rdg 8212  df-er 8456  df-en 8692  df-dom 8693  df-sdom 8694  df-pnf 10942  df-mnf 10943  df-xr 10944  df-ltxr 10945  df-le 10946  df-sub 11137  df-neg 11138  df-nn 11904  df-2 11966  df-3 11967  df-4 11968  df-5 11969  df-6 11970  df-7 11971  df-8 11972  df-9 11973  df-n0 12164  df-z 12250  df-dec 12367  df-sets 16793  df-slot 16811  df-ndx 16823  df-base 16841  df-ress 16868  df-tset 16907  df-unif 16911  df-rest 17050  df-topn 17051  df-top 21951  df-topon 21968  df-topsp 21990  df-ust 23260  df-utop 23291  df-uss 23316  df-usp 23317
This theorem is referenced by: (None)
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