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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 7746 | . . 3 ⊢ (𝐽 ∈ 𝑉 → ∪ 𝐽 ∈ V) | |
| 3 | 1, 2 | eqeltrid 2865 | . 2 ⊢ (𝐽 ∈ 𝑉 → 𝑋 ∈ V) |
| 4 | 1 | eqimss2i 3992 | . . 3 ⊢ ∪ 𝐽 ⊆ 𝑋 |
| 5 | sspwuni 5060 | . . 3 ⊢ (𝐽 ⊆ 𝒫 𝑋 ↔ ∪ 𝐽 ⊆ 𝑋) | |
| 6 | 4, 5 | mpbir 234 | . 2 ⊢ 𝐽 ⊆ 𝒫 𝑋 |
| 7 | restid2 17581 | . 2 ⊢ ((𝑋 ∈ V ∧ 𝐽 ⊆ 𝒫 𝑋) → (𝐽 ↾t 𝑋) = 𝐽) | |
| 8 | 3, 6, 7 | sylancl 598 | 1 ⊢ (𝐽 ∈ 𝑉 → (𝐽 ↾t 𝑋) = 𝐽) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 Vcvv 3451 ⊆ wss 3899 𝒫 cpw 4557 ∪ cuni 4867 (class class class)co 7412 ↾t crest 17571 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-ov 7415 df-oprab 7416 df-mpo 7417 df-rest 17573 |
| This theorem is used by: toponrestid 23219 restin 23464 cnrmnrm 23659 cmpkgen 23850 xkopt 23954 xkoinjcn 23986 ussid 24559 tuslem 24565 cnperf 25120 retopconn 25129 abscncfALT 25225 cnmpopc 25229 recnperf 26205 lhop1lem 26313 cxpcn3 27058 retopsconn 35983 ivthALT 37093 binomcxplemdvbinom 45296 binomcxplemnotnn0 45299 fsumcncf 46832 ioccncflimc 46839 cncfuni 46840 icocncflimc 46843 cncfiooicclem1 46847 itgsubsticclem 46929 dirkercncflem2 47058 dirkercncflem4 47060 fourierdlem32 47093 fourierdlem33 47094 fourierdlem62 47122 fourierdlem93 47153 fourierdlem101 47161 |
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