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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 16694 | . . 3 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐽 ↾t 𝐵) = ran (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵))) | |
2 | 1 | eleq2d 2898 | . 2 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 ∈ (𝐽 ↾t 𝐵) ↔ 𝐴 ∈ ran (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵)))) |
3 | eqid 2821 | . . 3 ⊢ (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵)) = (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵)) | |
4 | vex 3497 | . . . 4 ⊢ 𝑥 ∈ V | |
5 | 4 | inex1 5213 | . . 3 ⊢ (𝑥 ∩ 𝐵) ∈ V |
6 | 3, 5 | elrnmpti 5826 | . 2 ⊢ (𝐴 ∈ ran (𝑥 ∈ 𝐽 ↦ (𝑥 ∩ 𝐵)) ↔ ∃𝑥 ∈ 𝐽 𝐴 = (𝑥 ∩ 𝐵)) |
7 | 2, 6 | syl6bb 289 | 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 208 ∧ wa 398 = wceq 1533 ∈ wcel 2110 ∃wrex 3139 ∩ cin 3934 ↦ cmpt 5138 ran crn 5550 (class class class)co 7150 ↾t crest 16688 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-rep 5182 ax-sep 5195 ax-nul 5202 ax-pr 5321 ax-un 7455 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3496 df-sbc 3772 df-csb 3883 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-sn 4561 df-pr 4563 df-op 4567 df-uni 4832 df-iun 4913 df-br 5059 df-opab 5121 df-mpt 5139 df-id 5454 df-xp 5555 df-rel 5556 df-cnv 5557 df-co 5558 df-dm 5559 df-rn 5560 df-res 5561 df-ima 5562 df-iota 6308 df-fun 6351 df-fn 6352 df-f 6353 df-f1 6354 df-fo 6355 df-f1o 6356 df-fv 6357 df-ov 7153 df-oprab 7154 df-mpo 7155 df-rest 16690 |
This theorem is referenced by: elrestr 16696 restsspw 16699 firest 16700 restbas 21760 restsn 21772 restcld 21774 restopnb 21777 ssrest 21778 neitr 21782 restntr 21784 cnrest2 21888 cnpresti 21890 cnprest 21891 cnprest2 21892 lmss 21900 cmpsublem 22001 cmpsub 22002 connsuba 22022 1stcrest 22055 subislly 22083 cldllycmp 22097 txrest 22233 trfbas2 22445 trfbas 22446 trfil2 22489 flimrest 22585 fclsrest 22626 cnextcn 22669 tsmssubm 22745 trust 22832 restutop 22840 restutopopn 22841 trcfilu 22897 metrest 23128 xrtgioo 23408 xrge0tsms 23436 icoopnst 23537 iocopnst 23538 subopnmbl 24199 mbfimaopn2 24252 xrlimcnp 25540 xrge0tsmsd 30687 bj-restsn 34367 bj-rest10 34373 bj-restn0 34375 bj-restpw 34377 bj-rest0 34378 bj-restb 34379 bj-restuni 34382 bj-restreg 34384 ptrest 34885 poimirlem29 34915 elrestd 41367 restuni3 41377 icccncfext 42163 subsaliuncl 42635 subsalsal 42636 sssmf 43009 incsmf 43013 decsmf 43037 smflimlem6 43046 smfco 43071 smfpimcc 43076 |
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