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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 7757 | . . 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 17601 | . 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 7420 ↾t crest 17591 |
| 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 7751 |
| 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 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7423 df-oprab 7424 df-mpo 7425 df-rest 17593 |
| This theorem is used by: toponrestid 23239 restin 23484 cnrmnrm 23679 cmpkgen 23870 xkopt 23974 xkoinjcn 24006 ussid 24579 tuslem 24585 cnperf 25140 retopconn 25149 abscncfALT 25245 cnmpopc 25249 recnperf 26225 lhop1lem 26333 cxpcn3 27076 retopsconn 36014 ivthALT 37123 binomcxplemdvbinom 45336 binomcxplemnotnn0 45339 fsumcncf 46887 ioccncflimc 46894 cncfuni 46895 icocncflimc 46898 cncfiooicclem1 46902 itgsubsticclem 46984 dirkercncflem2 47113 dirkercncflem4 47115 fourierdlem32 47148 fourierdlem33 47149 fourierdlem62 47177 fourierdlem93 47208 fourierdlem101 47216 |
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