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Theorem ressust 24186

Description: The uniform structure of a restricted space. (Contributed by Thierry Arnoux, 22-Jan-2018.)

**Hypotheses**
Ref	Expression
ressust.x	⊢ 𝑋 = (Base‘𝑊)
ressust.t	⊢ 𝑇 = (UnifSt‘(𝑊 ↾_s 𝐴))

**Assertion**
Ref	Expression
ressust	⊢ ((𝑊 ∈ UnifSp ∧ 𝐴 ⊆ 𝑋) → 𝑇 ∈ (UnifOn‘𝐴))

**Proof of Theorem ressust**
Step	Hyp	Ref	Expression
1		ressust.t	. . 3 ⊢ 𝑇 = (UnifSt‘(𝑊 ↾_s 𝐴))
2		ressust.x	. . . . . . 7 ⊢ 𝑋 = (Base‘𝑊)
3	2	fvexi 6914	. . . . . 6 ⊢ 𝑋 ∈ V
4	3	ssex 5323	. . . . 5 ⊢ (𝐴 ⊆ 𝑋 → 𝐴 ∈ V)
5	4	adantl 480	. . . 4 ⊢ ((𝑊 ∈ UnifSp ∧ 𝐴 ⊆ 𝑋) → 𝐴 ∈ V)
6		ressuss 24185	. . . 4 ⊢ (𝐴 ∈ V → (UnifSt‘(𝑊 ↾_s 𝐴)) = ((UnifSt‘𝑊) ↾_t (𝐴 × 𝐴)))
7	5, 6	syl 17	. . 3 ⊢ ((𝑊 ∈ UnifSp ∧ 𝐴 ⊆ 𝑋) → (UnifSt‘(𝑊 ↾_s 𝐴)) = ((UnifSt‘𝑊) ↾_t (𝐴 × 𝐴)))
8	1, 7	eqtrid 2779	. 2 ⊢ ((𝑊 ∈ UnifSp ∧ 𝐴 ⊆ 𝑋) → 𝑇 = ((UnifSt‘𝑊) ↾_t (𝐴 × 𝐴)))
9		eqid 2727	. . . . 5 ⊢ (UnifSt‘𝑊) = (UnifSt‘𝑊)
10		eqid 2727	. . . . 5 ⊢ (TopOpen‘𝑊) = (TopOpen‘𝑊)
11	2, 9, 10	isusp 24184	. . . 4 ⊢ (𝑊 ∈ UnifSp ↔ ((UnifSt‘𝑊) ∈ (UnifOn‘𝑋) ∧ (TopOpen‘𝑊) = (unifTop‘(UnifSt‘𝑊))))
12	11	simplbi 496	. . 3 ⊢ (𝑊 ∈ UnifSp → (UnifSt‘𝑊) ∈ (UnifOn‘𝑋))
13		trust 24152	. . 3 ⊢ (((UnifSt‘𝑊) ∈ (UnifOn‘𝑋) ∧ 𝐴 ⊆ 𝑋) → ((UnifSt‘𝑊) ↾_t (𝐴 × 𝐴)) ∈ (UnifOn‘𝐴))
14	12, 13	sylan 578	. 2 ⊢ ((𝑊 ∈ UnifSp ∧ 𝐴 ⊆ 𝑋) → ((UnifSt‘𝑊) ↾_t (𝐴 × 𝐴)) ∈ (UnifOn‘𝐴))
15	8, 14	eqeltrd 2828	1 ⊢ ((𝑊 ∈ UnifSp ∧ 𝐴 ⊆ 𝑋) → 𝑇 ∈ (UnifOn‘𝐴))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 394 = wceq 1533 ∈ wcel 2098 Vcvv 3471 ⊆ wss 3947 × cxp 5678 ‘cfv 6551 (class class class)co 7424 Basecbs 17185 ↾_s cress 17214 ↾_t crest 17407 TopOpenctopn 17408 UnifOncust 24122 unifTopcutop 24153 UnifStcuss 24176 UnifSpcusp 24177

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2698 ax-rep 5287 ax-sep 5301 ax-nul 5308 ax-pow 5367 ax-pr 5431 ax-un 7744 ax-cnex 11200 ax-resscn 11201 ax-1cn 11202 ax-icn 11203 ax-addcl 11204 ax-addrcl 11205 ax-mulcl 11206 ax-mulrcl 11207 ax-mulcom 11208 ax-addass 11209 ax-mulass 11210 ax-distr 11211 ax-i2m1 11212 ax-1ne0 11213 ax-1rid 11214 ax-rnegex 11215 ax-rrecex 11216 ax-cnre 11217 ax-pre-lttri 11218 ax-pre-lttrn 11219 ax-pre-ltadd 11220 ax-pre-mulgt0 11221

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2529 df-eu 2558 df-clab 2705 df-cleq 2719 df-clel 2805 df-nfc 2880 df-ne 2937 df-nel 3043 df-ral 3058 df-rex 3067 df-reu 3373 df-rab 3429 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4325 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4911 df-iun 5000 df-br 5151 df-opab 5213 df-mpt 5234 df-tr 5268 df-id 5578 df-eprel 5584 df-po 5592 df-so 5593 df-fr 5635 df-we 5637 df-xp 5686 df-rel 5687 df-cnv 5688 df-co 5689 df-dm 5690 df-rn 5691 df-res 5692 df-ima 5693 df-pred 6308 df-ord 6375 df-on 6376 df-lim 6377 df-suc 6378 df-iota 6503 df-fun 6553 df-fn 6554 df-f 6555 df-f1 6556 df-fo 6557 df-f1o 6558 df-fv 6559 df-riota 7380 df-ov 7427 df-oprab 7428 df-mpo 7429 df-om 7875 df-1st 7997 df-2nd 7998 df-frecs 8291 df-wrecs 8322 df-recs 8396 df-rdg 8435 df-er 8729 df-en 8969 df-dom 8970 df-sdom 8971 df-pnf 11286 df-mnf 11287 df-xr 11288 df-ltxr 11289 df-le 11290 df-sub 11482 df-neg 11483 df-nn 12249 df-2 12311 df-3 12312 df-4 12313 df-5 12314 df-6 12315 df-7 12316 df-8 12317 df-9 12318 df-n0 12509 df-z 12595 df-dec 12714 df-sets 17138 df-slot 17156 df-ndx 17168 df-base 17186 df-ress 17215 df-unif 17261 df-rest 17409 df-ust 24123 df-uss 24179 df-usp 24180

This theorem is referenced by: ucnextcn 24227

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