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Mirrors > Home > MPE Home > Th. List > elrest | Structured version Visualization version GIF version |
Description: The predicate "is an open set of a subspace topology". (Contributed by FL, 5-Jan-2009.) (Revised by Mario Carneiro, 15-Dec-2013.) |
Ref | Expression |
---|---|
elrest | ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 ∈ (𝐽 ↾t 𝐵) ↔ ∃𝑥 ∈ 𝐽 𝐴 = (𝑥 ∩ 𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | restval 17137 | . . 3 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐽 ↾t 𝐵) = ran (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵))) | |
2 | 1 | eleq2d 2824 | . 2 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 ∈ (𝐽 ↾t 𝐵) ↔ 𝐴 ∈ ran (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵)))) |
3 | eqid 2738 | . . 3 ⊢ (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵)) = (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵)) | |
4 | vex 3436 | . . . 4 ⊢ 𝑥 ∈ V | |
5 | 4 | inex1 5241 | . . 3 ⊢ (𝑥 ∩ 𝐵) ∈ V |
6 | 3, 5 | elrnmpti 5869 | . 2 ⊢ (𝐴 ∈ ran (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵)) ↔ ∃𝑥 ∈ 𝐽 𝐴 = (𝑥 ∩ 𝐵)) |
7 | 2, 6 | bitrdi 287 | 1 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 ∈ (𝐽 ↾t 𝐵) ↔ ∃𝑥 ∈ 𝐽 𝐴 = (𝑥 ∩ 𝐵))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1539 ∈ wcel 2106 ∃wrex 3065 ∩ cin 3886 ↦ cmpt 5157 ran crn 5590 (class class class)co 7275 ↾t crest 17131 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pr 5352 ax-un 7588 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-id 5489 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-ov 7278 df-oprab 7279 df-mpo 7280 df-rest 17133 |
This theorem is referenced by: elrestr 17139 restsspw 17142 firest 17143 restbas 22309 restsn 22321 restcld 22323 restopnb 22326 ssrest 22327 neitr 22331 restntr 22333 cnrest2 22437 cnpresti 22439 cnprest 22440 cnprest2 22441 lmss 22449 cmpsublem 22550 cmpsub 22551 connsuba 22571 1stcrest 22604 subislly 22632 cldllycmp 22646 txrest 22782 trfbas2 22994 trfbas 22995 trfil2 23038 flimrest 23134 fclsrest 23175 cnextcn 23218 tsmssubm 23294 trust 23381 restutop 23389 restutopopn 23390 trcfilu 23446 metrest 23680 xrtgioo 23969 xrge0tsms 23997 icoopnst 24102 iocopnst 24103 subopnmbl 24768 mbfimaopn2 24821 xrlimcnp 26118 xrge0tsmsd 31317 rspectopn 31817 bj-restsn 35253 bj-rest10 35259 bj-restn0 35261 bj-restpw 35263 bj-rest0 35264 bj-restb 35265 bj-restuni 35268 bj-restreg 35270 ptrest 35776 poimirlem29 35806 elrestd 42658 restuni3 42667 icccncfext 43428 subsaliuncl 43897 subsalsal 43898 sssmf 44274 incsmf 44278 decsmf 44302 smflimlem6 44311 smfco 44336 smfpimcc 44341 |
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