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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 7727 | . . 3 ⊢ (𝐽 ∈ 𝑉 → ∪ 𝐽 ∈ V) | |
| 3 | 1, 2 | eqeltrid 2869 | . 2 ⊢ (𝐽 ∈ 𝑉 → 𝑋 ∈ V) |
| 4 | 1 | eqimss2i 4000 | . . 3 ⊢ ∪ 𝐽 ⊆ 𝑋 |
| 5 | sspwuni 5062 | . . 3 ⊢ (𝐽 ⊆ 𝒫 𝑋 ↔ ∪ 𝐽 ⊆ 𝑋) | |
| 6 | 4, 5 | mpbir 234 | . 2 ⊢ 𝐽 ⊆ 𝒫 𝑋 |
| 7 | restid2 17473 | . 2 ⊢ ((𝑋 ∈ V ∧ 𝐽 ⊆ 𝒫 𝑋) → (𝐽 ↾t 𝑋) = 𝐽) | |
| 8 | 3, 6, 7 | sylancl 597 | 1 ⊢ (𝐽 ∈ 𝑉 → (𝐽 ↾t 𝑋) = 𝐽) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1563 ∈ wcel 2145 Vcvv 3457 ⊆ wss 3907 𝒫 cpw 4558 ∪ cuni 4868 (class class class)co 7400 ↾t crest 17463 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-rep 5232 ax-sep 5251 ax-nul 5261 ax-pow 5327 ax-pr 5395 ax-un 7722 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-iun 4954 df-br 5106 df-opab 5168 df-mpt 5187 df-id 5547 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-ov 7403 df-oprab 7404 df-mpo 7405 df-rest 17465 |
| This theorem is referenced by: toponrestid 23039 restin 23284 cnrmnrm 23479 cmpkgen 23669 xkopt 23773 xkoinjcn 23805 ussid 24378 tuslem 24384 cnperf 24939 retopconn 24948 abscncfALT 25044 cnmpopc 25048 recnperf 26025 lhop1lem 26133 cxpcn3 26871 retopsconn 35612 ivthALT 36708 binomcxplemdvbinom 44927 binomcxplemnotnn0 44930 fsumcncf 46450 ioccncflimc 46457 cncfuni 46458 icocncflimc 46461 cncfiooicclem1 46465 itgsubsticclem 46547 dirkercncflem2 46676 dirkercncflem4 46678 fourierdlem32 46711 fourierdlem33 46712 fourierdlem62 46740 fourierdlem93 46771 fourierdlem101 46779 |
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