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Mirrors > Home > MPE Home > Th. List > restid | Structured version Visualization version GIF version |
Description: The subspace topology of the base set is the original topology. (Contributed by Jeff Hankins, 9-Jul-2009.) (Revised by Mario Carneiro, 13-Aug-2015.) |
Ref | Expression |
---|---|
restid.1 | ⊢ 𝑋 = ∪ 𝐽 |
Ref | Expression |
---|---|
restid | ⊢ (𝐽 ∈ 𝑉 → (𝐽 ↾t 𝑋) = 𝐽) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | restid.1 | . . 3 ⊢ 𝑋 = ∪ 𝐽 | |
2 | uniexg 7734 | . . 3 ⊢ (𝐽 ∈ 𝑉 → ∪ 𝐽 ∈ V) | |
3 | 1, 2 | eqeltrid 2835 | . 2 ⊢ (𝐽 ∈ 𝑉 → 𝑋 ∈ V) |
4 | 1 | eqimss2i 4044 | . . 3 ⊢ ∪ 𝐽 ⊆ 𝑋 |
5 | sspwuni 5104 | . . 3 ⊢ (𝐽 ⊆ 𝒫 𝑋 ↔ ∪ 𝐽 ⊆ 𝑋) | |
6 | 4, 5 | mpbir 230 | . 2 ⊢ 𝐽 ⊆ 𝒫 𝑋 |
7 | restid2 17382 | . 2 ⊢ ((𝑋 ∈ V ∧ 𝐽 ⊆ 𝒫 𝑋) → (𝐽 ↾t 𝑋) = 𝐽) | |
8 | 3, 6, 7 | sylancl 584 | 1 ⊢ (𝐽 ∈ 𝑉 → (𝐽 ↾t 𝑋) = 𝐽) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2104 Vcvv 3472 ⊆ wss 3949 𝒫 cpw 4603 ∪ cuni 4909 (class class class)co 7413 ↾t crest 17372 |
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 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7729 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-ral 3060 df-rex 3069 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4910 df-iun 5000 df-br 5150 df-opab 5212 df-mpt 5233 df-id 5575 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-ov 7416 df-oprab 7417 df-mpo 7418 df-rest 17374 |
This theorem is referenced by: toponrestid 22645 restin 22892 cnrmnrm 23087 cmpkgen 23277 xkopt 23381 xkoinjcn 23413 ussid 23987 tuslem 23993 tuslemOLD 23994 cnperf 24558 retopconn 24567 abscncfALT 24667 cnmpopc 24671 recnperf 25656 lhop1lem 25764 cxpcn3 26490 retopsconn 34536 ivthALT 35525 binomcxplemdvbinom 43416 binomcxplemnotnn0 43419 fsumcncf 44894 ioccncflimc 44901 cncfuni 44902 icocncflimc 44905 cncfiooicclem1 44909 itgsubsticclem 44991 dirkercncflem2 45120 dirkercncflem4 45122 fourierdlem32 45155 fourierdlem33 45156 fourierdlem62 45184 fourierdlem93 45215 fourierdlem101 45223 |
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