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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 7584 | . . 3 ⊢ (𝐽 ∈ 𝑉 → ∪ 𝐽 ∈ V) | |
3 | 1, 2 | eqeltrid 2844 | . 2 ⊢ (𝐽 ∈ 𝑉 → 𝑋 ∈ V) |
4 | 1 | eqimss2i 3984 | . . 3 ⊢ ∪ 𝐽 ⊆ 𝑋 |
5 | sspwuni 5033 | . . 3 ⊢ (𝐽 ⊆ 𝒫 𝑋 ↔ ∪ 𝐽 ⊆ 𝑋) | |
6 | 4, 5 | mpbir 230 | . 2 ⊢ 𝐽 ⊆ 𝒫 𝑋 |
7 | restid2 17122 | . 2 ⊢ ((𝑋 ∈ V ∧ 𝐽 ⊆ 𝒫 𝑋) → (𝐽 ↾t 𝑋) = 𝐽) | |
8 | 3, 6, 7 | sylancl 585 | 1 ⊢ (𝐽 ∈ 𝑉 → (𝐽 ↾t 𝑋) = 𝐽) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2109 Vcvv 3430 ⊆ wss 3891 𝒫 cpw 4538 ∪ cuni 4844 (class class class)co 7268 ↾t crest 17112 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-rep 5213 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7579 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-ral 3070 df-rex 3071 df-reu 3072 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-nul 4262 df-if 4465 df-pw 4540 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4845 df-iun 4931 df-br 5079 df-opab 5141 df-mpt 5162 df-id 5488 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-f1 6435 df-fo 6436 df-f1o 6437 df-fv 6438 df-ov 7271 df-oprab 7272 df-mpo 7273 df-rest 17114 |
This theorem is referenced by: toponrestid 22051 restin 22298 cnrmnrm 22493 cmpkgen 22683 xkopt 22787 xkoinjcn 22819 ussid 23393 tuslem 23399 tuslemOLD 23400 cnperf 23964 retopconn 23973 abscncfALT 24068 cnmpopc 24072 recnperf 25050 lhop1lem 25158 cxpcn3 25882 retopsconn 33190 ivthALT 34503 binomcxplemdvbinom 41924 binomcxplemnotnn0 41927 fsumcncf 43373 ioccncflimc 43380 cncfuni 43381 icocncflimc 43384 cncfiooicclem1 43388 itgsubsticclem 43470 dirkercncflem2 43599 dirkercncflem4 43601 fourierdlem32 43634 fourierdlem33 43635 fourierdlem62 43663 fourierdlem93 43694 fourierdlem101 43702 |
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