| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 17438 | . . 3 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐽 ↾t 𝐵) = ran (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵))) | |
| 2 | 1 | eleq2d 2820 | . 2 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 ∈ (𝐽 ↾t 𝐵) ↔ 𝐴 ∈ ran (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵)))) |
| 3 | eqid 2735 | . . 3 ⊢ (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵)) = (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵)) | |
| 4 | vex 3463 | . . . 4 ⊢ 𝑥 ∈ V | |
| 5 | 4 | inex1 5287 | . . 3 ⊢ (𝑥 ∩ 𝐵) ∈ V |
| 6 | 3, 5 | elrnmpti 5942 | . 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 206 ∧ wa 395 = wceq 1540 ∈ wcel 2108 ∃wrex 3060 ∩ cin 3925 ↦ cmpt 5201 ran crn 5655 (class class class)co 7403 ↾t crest 17432 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-rep 5249 ax-sep 5266 ax-nul 5276 ax-pr 5402 ax-un 7727 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-nul 4309 df-if 4501 df-sn 4602 df-pr 4604 df-op 4608 df-uni 4884 df-iun 4969 df-br 5120 df-opab 5182 df-mpt 5202 df-id 5548 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-iota 6483 df-fun 6532 df-fn 6533 df-f 6534 df-f1 6535 df-fo 6536 df-f1o 6537 df-fv 6538 df-ov 7406 df-oprab 7407 df-mpo 7408 df-rest 17434 |
| This theorem is referenced by: elrestr 17440 restsspw 17443 firest 17444 restbas 23094 restsn 23106 restcld 23108 restopnb 23111 ssrest 23112 neitr 23116 restntr 23118 cnrest2 23222 cnpresti 23224 cnprest 23225 cnprest2 23226 lmss 23234 cmpsublem 23335 cmpsub 23336 connsuba 23356 1stcrest 23389 subislly 23417 cldllycmp 23431 txrest 23567 trfbas2 23779 trfbas 23780 trfil2 23823 flimrest 23919 fclsrest 23960 cnextcn 24003 tsmssubm 24079 trust 24166 restutop 24174 restutopopn 24175 trcfilu 24230 metrest 24461 xrtgioo 24744 xrge0tsms 24772 icoopnst 24885 iocopnst 24886 subopnmbl 25555 mbfimaopn2 25608 xrlimcnp 26928 xrge0tsmsd 33002 rspectopn 33844 bj-restsn 37046 bj-rest10 37052 bj-restn0 37054 bj-restpw 37056 bj-rest0 37057 bj-restb 37058 bj-restuni 37061 bj-restreg 37063 ptrest 37589 poimirlem29 37619 elrestd 45080 restuni3 45090 restsubel 45125 icccncfext 45864 subsaliuncl 46335 subsalsal 46336 salrestss 46338 sssmf 46715 incsmf 46719 decsmf 46744 smflimlem6 46753 smfco 46779 smfpimcc 46785 |
| Copyright terms: Public domain | W3C validator |