Theorem ressusp 24150

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 ∧ 𝐴 ∈ 𝐽) → (𝑊 ↾s 𝐴) ∈ UnifSp)

Proof of Theorem ressusp

Step	Hyp	Ref	Expression
1		ressuss 24148	. . . . 5 ⊢ (𝐴 ∈ 𝐽 → (UnifSt‘(𝑊 ↾s 𝐴)) = ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)))
2	1	3ad2ant3 1135	. . . 4 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → (UnifSt‘(𝑊 ↾s 𝐴)) = ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)))
3		simp1 1136	. . . . . . 7 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → 𝑊 ∈ UnifSp)
4		ressusp.1	. . . . . . . 8 ⊢ 𝐵 = (Base‘𝑊)
5		eqid 2729	. . . . . . . 8 ⊢ (UnifSt‘𝑊) = (UnifSt‘𝑊)
6		ressusp.2	. . . . . . . 8 ⊢ 𝐽 = (TopOpen‘𝑊)
7	4, 5, 6	isusp 24147	. . . . . . 7 ⊢ (𝑊 ∈ UnifSp ↔ ((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐽 = (unifTop‘(UnifSt‘𝑊))))
8	3, 7	sylib 218	. . . . . 6 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → ((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐽 = (unifTop‘(UnifSt‘𝑊))))
9	8	simpld 494	. . . . 5 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → (UnifSt‘𝑊) ∈ (UnifOn‘𝐵))
10		simp2 1137	. . . . . . 7 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → 𝑊 ∈ TopSp)
11	4, 6	istps 22819	. . . . . . 7 ⊢ (𝑊 ∈ TopSp ↔ 𝐽 ∈ (TopOn‘𝐵))
12	10, 11	sylib 218	. . . . . 6 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → 𝐽 ∈ (TopOn‘𝐵))
13		simp3 1138	. . . . . 6 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → 𝐴 ∈ 𝐽)
14		toponss 22812	. . . . . 6 ⊢ ((𝐽 ∈ (TopOn‘𝐵) ∧ 𝐴 ∈ 𝐽) → 𝐴 ⊆ 𝐵)
15	12, 13, 14	syl2anc 584	. . . . 5 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → 𝐴 ⊆ 𝐵)
16		trust 24115	. . . . 5 ⊢ (((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐴 ⊆ 𝐵) → ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)) ∈ (UnifOn‘𝐴))
17	9, 15, 16	syl2anc 584	. . . 4 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → ((UnifSt‘𝑊) ↾t (𝐴 × 𝐴)) ∈ (UnifOn‘𝐴))
18	2, 17	eqeltrd 2828	. . 3 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → (UnifSt‘(𝑊 ↾s 𝐴)) ∈ (UnifOn‘𝐴))
19		eqid 2729	. . . . . 6 ⊢ (𝑊 ↾s 𝐴) = (𝑊 ↾s 𝐴)
20	19, 4	ressbas2 17149	. . . . 5 ⊢ (𝐴 ⊆ 𝐵 → 𝐴 = (Base‘(𝑊 ↾s 𝐴)))
21	15, 20	syl 17	. . . 4 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → 𝐴 = (Base‘(𝑊 ↾s 𝐴)))
22	21	fveq2d 6826	. . 3 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → (UnifOn‘𝐴) = (UnifOn‘(Base‘(𝑊 ↾s 𝐴))))
23	18, 22	eleqtrd 2830	. 2 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → (UnifSt‘(𝑊 ↾s 𝐴)) ∈ (UnifOn‘(Base‘(𝑊 ↾s 𝐴))))
24	8	simprd 495	. . . . 5 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → 𝐽 = (unifTop‘(UnifSt‘𝑊)))
25	13, 24	eleqtrd 2830	. . . 4 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → 𝐴 ∈ (unifTop‘(UnifSt‘𝑊)))
26		restutopopn 24124	. . . 4 ⊢ (((UnifSt‘𝑊) ∈ (UnifOn‘𝐵) ∧ 𝐴 ∈ (unifTop‘(UnifSt‘𝑊))) → ((unifTop‘(UnifSt‘𝑊)) ↾t 𝐴) = (unifTop‘((UnifSt‘𝑊) ↾t (𝐴 × 𝐴))))
27	9, 25, 26	syl2anc 584	. . 3 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → ((unifTop‘(UnifSt‘𝑊)) ↾t 𝐴) = (unifTop‘((UnifSt‘𝑊) ↾t (𝐴 × 𝐴))))
28	24	oveq1d 7364	. . 3 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → (𝐽 ↾t 𝐴) = ((unifTop‘(UnifSt‘𝑊)) ↾t 𝐴))
29	2	fveq2d 6826	. . 3 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → (unifTop‘(UnifSt‘(𝑊 ↾s 𝐴))) = (unifTop‘((UnifSt‘𝑊) ↾t (𝐴 × 𝐴))))
30	27, 28, 29	3eqtr4d 2774	. 2 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → (𝐽 ↾t 𝐴) = (unifTop‘(UnifSt‘(𝑊 ↾s 𝐴))))
31		eqid 2729	. . 3 ⊢ (Base‘(𝑊 ↾s 𝐴)) = (Base‘(𝑊 ↾s 𝐴))
32		eqid 2729	. . 3 ⊢ (UnifSt‘(𝑊 ↾s 𝐴)) = (UnifSt‘(𝑊 ↾s 𝐴))
33	19, 6	resstopn 23071	. . 3 ⊢ (𝐽 ↾t 𝐴) = (TopOpen‘(𝑊 ↾s 𝐴))
34	31, 32, 33	isusp 24147	. 2 ⊢ ((𝑊 ↾s 𝐴) ∈ UnifSp ↔ ((UnifSt‘(𝑊 ↾s 𝐴)) ∈ (UnifOn‘(Base‘(𝑊 ↾s 𝐴))) ∧ (𝐽 ↾t 𝐴) = (unifTop‘(UnifSt‘(𝑊 ↾s 𝐴)))))
35	23, 30, 34	sylanbrc 583	1 ⊢ ((𝑊 ∈ UnifSp ∧ 𝑊 ∈ TopSp ∧ 𝐴 ∈ 𝐽) → (𝑊 ↾s 𝐴) ∈ UnifSp)

Syntax hints:   → wi 4   ∧ wa 395   ∧ w3a 1086   = wceq 1540   ∈ wcel 2109   ⊆ wss 3903   × cxp 5617  ‘cfv 6482  (class class class)co 7349  Basecbs 17120   ↾_s cress 17141   ↾_t crest 17324  TopOpenctopn 17325  TopOnctopon 22795  TopSpctps 22817  UnifOncust 24085  unifTopcutop 24116  UnifStcuss 24139  UnifSpcusp 24140

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-rep 5218  ax-sep 5235  ax-nul 5245  ax-pow 5304  ax-pr 5371  ax-un 7671  ax-cnex 11065  ax-resscn 11066  ax-1cn 11067  ax-icn 11068  ax-addcl 11069  ax-addrcl 11070  ax-mulcl 11071  ax-mulrcl 11072  ax-mulcom 11073  ax-addass 11074  ax-mulass 11075  ax-distr 11076  ax-i2m1 11077  ax-1ne0 11078  ax-1rid 11079  ax-rnegex 11080  ax-rrecex 11081  ax-cnre 11082  ax-pre-lttri 11083  ax-pre-lttrn 11084  ax-pre-ltadd 11085  ax-pre-mulgt0 11086

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-nel 3030  df-ral 3045  df-rex 3054  df-reu 3344  df-rab 3395  df-v 3438  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-pss 3923  df-nul 4285  df-if 4477  df-pw 4553  df-sn 4578  df-pr 4580  df-op 4584  df-uni 4859  df-iun 4943  df-br 5093  df-opab 5155  df-mpt 5174  df-tr 5200  df-id 5514  df-eprel 5519  df-po 5527  df-so 5528  df-fr 5572  df-we 5574  df-xp 5625  df-rel 5626  df-cnv 5627  df-co 5628  df-dm 5629  df-rn 5630  df-res 5631  df-ima 5632  df-pred 6249  df-ord 6310  df-on 6311  df-lim 6312  df-suc 6313  df-iota 6438  df-fun 6484  df-fn 6485  df-f 6486  df-f1 6487  df-fo 6488  df-f1o 6489  df-fv 6490  df-riota 7306  df-ov 7352  df-oprab 7353  df-mpo 7354  df-om 7800  df-1st 7924  df-2nd 7925  df-frecs 8214  df-wrecs 8245  df-recs 8294  df-rdg 8332  df-er 8625  df-en 8873  df-dom 8874  df-sdom 8875  df-pnf 11151  df-mnf 11152  df-xr 11153  df-ltxr 11154  df-le 11155  df-sub 11349  df-neg 11350  df-nn 12129  df-2 12191  df-3 12192  df-4 12193  df-5 12194  df-6 12195  df-7 12196  df-8 12197  df-9 12198  df-n0 12385  df-z 12472  df-dec 12592  df-sets 17075  df-slot 17093  df-ndx 17105  df-base 17121  df-ress 17142  df-tset 17180  df-unif 17184  df-rest 17326  df-topn 17327  df-top 22779  df-topon 22796  df-topsp 22818  df-ust 24086  df-utop 24117  df-uss 24142  df-usp 24143

This theorem is referenced by: (None)