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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 2866 | . 2 ⊢ (𝐽 ∈ 𝑉 → 𝑋 ∈ V) |
| 4 | 1 | eqimss2i 3995 | . . 3 ⊢ ∪ 𝐽 ⊆ 𝑋 |
| 5 | sspwuni 5064 | . . 3 ⊢ (𝐽 ⊆ 𝒫 𝑋 ↔ ∪ 𝐽 ⊆ 𝑋) | |
| 6 | 4, 5 | mpbir 234 | . 2 ⊢ 𝐽 ⊆ 𝒫 𝑋 |
| 7 | restid2 17521 | . 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 3453 ⊆ wss 3902 𝒫 cpw 4560 ∪ cuni 4870 (class class class)co 7417 ↾t crest 17511 |
| 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 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7420 df-oprab 7421 df-mpo 7422 df-rest 17513 |
| This theorem is used by: toponrestid 23152 restin 23397 cnrmnrm 23592 cmpkgen 23783 xkopt 23887 xkoinjcn 23919 ussid 24492 tuslem 24498 cnperf 25053 retopconn 25062 abscncfALT 25158 cnmpopc 25162 recnperf 26139 lhop1lem 26247 cxpcn3 26993 retopsconn 35836 ivthALT 36962 binomcxplemdvbinom 45185 binomcxplemnotnn0 45188 fsumcncf 46714 ioccncflimc 46721 cncfuni 46722 icocncflimc 46725 cncfiooicclem1 46729 itgsubsticclem 46811 dirkercncflem2 46940 dirkercncflem4 46942 fourierdlem32 46975 fourierdlem33 46976 fourierdlem62 47004 fourierdlem93 47035 fourierdlem101 47043 |
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