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Theorem ressusp 23162
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 23160 . . . . 5 (𝐴𝐽 → (UnifSt‘(𝑊s 𝐴)) = ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)))
213ad2ant3 1137 . . . 4 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (UnifSt‘(𝑊s 𝐴)) = ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)))
3 simp1 1138 . . . . . . 7 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝑊 ∈ UnifSp)
4 ressusp.1 . . . . . . . 8 𝐵 = (Base‘𝑊)
5 eqid 2737 . . . . . . . 8 (UnifSt‘𝑊) = (UnifSt‘𝑊)
6 ressusp.2 . . . . . . . 8 𝐽 = (TopOpen‘𝑊)
74, 5, 6isusp 23159 . . . . . . 7 (𝑊 ∈ UnifSp ↔ ((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐽 = (unifTop‘(UnifSt‘𝑊))))
83, 7sylib 221 . . . . . 6 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → ((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐽 = (unifTop‘(UnifSt‘𝑊))))
98simpld 498 . . . . 5 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (UnifSt‘𝑊) ∈ (UnifOn‘𝐵))
10 simp2 1139 . . . . . . 7 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝑊 ∈ TopSp)
114, 6istps 21831 . . . . . . 7 (𝑊 ∈ TopSp ↔ 𝐽 ∈ (TopOn‘𝐵))
1210, 11sylib 221 . . . . . 6 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐽 ∈ (TopOn‘𝐵))
13 simp3 1140 . . . . . 6 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐴𝐽)
14 toponss 21824 . . . . . 6 ((𝐽 ∈ (TopOn‘𝐵) ∧ 𝐴𝐽) → 𝐴𝐵)
1512, 13, 14syl2anc 587 . . . . 5 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐴𝐵)
16 trust 23127 . . . . 5 (((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐴𝐵) → ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)) ∈ (UnifOn‘𝐴))
179, 15, 16syl2anc 587 . . . 4 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)) ∈ (UnifOn‘𝐴))
182, 17eqeltrd 2838 . . 3 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (UnifSt‘(𝑊s 𝐴)) ∈ (UnifOn‘𝐴))
19 eqid 2737 . . . . . 6 (𝑊s 𝐴) = (𝑊s 𝐴)
2019, 4ressbas2 16791 . . . . 5 (𝐴𝐵𝐴 = (Base‘(𝑊s 𝐴)))
2115, 20syl 17 . . . 4 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐴 = (Base‘(𝑊s 𝐴)))
2221fveq2d 6721 . . 3 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (UnifOn‘𝐴) = (UnifOn‘(Base‘(𝑊s 𝐴))))
2318, 22eleqtrd 2840 . 2 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (UnifSt‘(𝑊s 𝐴)) ∈ (UnifOn‘(Base‘(𝑊s 𝐴))))
248simprd 499 . . . . 5 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐽 = (unifTop‘(UnifSt‘𝑊)))
2513, 24eleqtrd 2840 . . . 4 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → 𝐴 ∈ (unifTop‘(UnifSt‘𝑊)))
26 restutopopn 23136 . . . 4 (((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐴 ∈ (unifTop‘(UnifSt‘𝑊))) → ((unifTop‘(UnifSt‘𝑊)) ↾t 𝐴) = (unifTop‘((UnifSt‘𝑊) ↾t (𝐴 × 𝐴))))
279, 25, 26syl2anc 587 . . 3 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → ((unifTop‘(UnifSt‘𝑊)) ↾t 𝐴) = (unifTop‘((UnifSt‘𝑊) ↾t (𝐴 × 𝐴))))
2824oveq1d 7228 . . 3 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (𝐽t 𝐴) = ((unifTop‘(UnifSt‘𝑊)) ↾t 𝐴))
292fveq2d 6721 . . 3 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (unifTop‘(UnifSt‘(𝑊s 𝐴))) = (unifTop‘((UnifSt‘𝑊) ↾t (𝐴 × 𝐴))))
3027, 28, 293eqtr4d 2787 . 2 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (𝐽t 𝐴) = (unifTop‘(UnifSt‘(𝑊s 𝐴))))
31 eqid 2737 . . 3 (Base‘(𝑊s 𝐴)) = (Base‘(𝑊s 𝐴))
32 eqid 2737 . . 3 (UnifSt‘(𝑊s 𝐴)) = (UnifSt‘(𝑊s 𝐴))
3319, 6resstopn 22083 . . 3 (𝐽t 𝐴) = (TopOpen‘(𝑊s 𝐴))
3431, 32, 33isusp 23159 . 2 ((𝑊s 𝐴) ∈ UnifSp ↔ ((UnifSt‘(𝑊s 𝐴)) ∈ (UnifOn‘(Base‘(𝑊s 𝐴))) ∧ (𝐽t 𝐴) = (unifTop‘(UnifSt‘(𝑊s 𝐴)))))
3523, 30, 34sylanbrc 586 1 ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴𝐽) → (𝑊s 𝐴) ∈ UnifSp)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 399  w3a 1089   = wceq 1543  wcel 2110  wss 3866   × cxp 5549  cfv 6380  (class class class)co 7213  Basecbs 16760  s cress 16784  t crest 16925  TopOpenctopn 16926  TopOnctopon 21807  TopSpctps 21829  UnifOncust 23097  unifTopcutop 23128  UnifStcuss 23151  UnifSpcusp 23152
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1803  ax-4 1817  ax-5 1918  ax-6 1976  ax-7 2016  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2158  ax-12 2175  ax-ext 2708  ax-rep 5179  ax-sep 5192  ax-nul 5199  ax-pow 5258  ax-pr 5322  ax-un 7523  ax-cnex 10785  ax-resscn 10786  ax-1cn 10787  ax-icn 10788  ax-addcl 10789  ax-addrcl 10790  ax-mulcl 10791  ax-mulrcl 10792  ax-mulcom 10793  ax-addass 10794  ax-mulass 10795  ax-distr 10796  ax-i2m1 10797  ax-1ne0 10798  ax-1rid 10799  ax-rnegex 10800  ax-rrecex 10801  ax-cnre 10802  ax-pre-lttri 10803  ax-pre-lttrn 10804  ax-pre-ltadd 10805  ax-pre-mulgt0 10806
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 848  df-3or 1090  df-3an 1091  df-tru 1546  df-fal 1556  df-ex 1788  df-nf 1792  df-sb 2071  df-mo 2539  df-eu 2568  df-clab 2715  df-cleq 2729  df-clel 2816  df-nfc 2886  df-ne 2941  df-nel 3047  df-ral 3066  df-rex 3067  df-reu 3068  df-rab 3070  df-v 3410  df-sbc 3695  df-csb 3812  df-dif 3869  df-un 3871  df-in 3873  df-ss 3883  df-pss 3885  df-nul 4238  df-if 4440  df-pw 4515  df-sn 4542  df-pr 4544  df-tp 4546  df-op 4548  df-uni 4820  df-iun 4906  df-br 5054  df-opab 5116  df-mpt 5136  df-tr 5162  df-id 5455  df-eprel 5460  df-po 5468  df-so 5469  df-fr 5509  df-we 5511  df-xp 5557  df-rel 5558  df-cnv 5559  df-co 5560  df-dm 5561  df-rn 5562  df-res 5563  df-ima 5564  df-pred 6160  df-ord 6216  df-on 6217  df-lim 6218  df-suc 6219  df-iota 6338  df-fun 6382  df-fn 6383  df-f 6384  df-f1 6385  df-fo 6386  df-f1o 6387  df-fv 6388  df-riota 7170  df-ov 7216  df-oprab 7217  df-mpo 7218  df-om 7645  df-1st 7761  df-2nd 7762  df-wrecs 8047  df-recs 8108  df-rdg 8146  df-er 8391  df-en 8627  df-dom 8628  df-sdom 8629  df-pnf 10869  df-mnf 10870  df-xr 10871  df-ltxr 10872  df-le 10873  df-sub 11064  df-neg 11065  df-nn 11831  df-2 11893  df-3 11894  df-4 11895  df-5 11896  df-6 11897  df-7 11898  df-8 11899  df-9 11900  df-n0 12091  df-z 12177  df-dec 12294  df-sets 16717  df-slot 16735  df-ndx 16745  df-base 16761  df-ress 16785  df-tset 16821  df-unif 16825  df-rest 16927  df-topn 16928  df-top 21791  df-topon 21808  df-topsp 21830  df-ust 23098  df-utop 23129  df-uss 23154  df-usp 23155
This theorem is referenced by: (None)
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