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| Mirrors > Home > ILE Home > Th. List > fvres | GIF version | ||
| Description: The value of a restricted function. (Contributed by NM, 2-Aug-1994.) |
| Ref | Expression |
|---|---|
| fvres | ⊢ (𝐴 ∈ 𝐵 → ((𝐹 ↾ 𝐵)‘𝐴) = (𝐹‘𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | vex 2802 | . . . . 5 ⊢ 𝑥 ∈ V | |
| 2 | 1 | brres 5011 | . . . 4 ⊢ (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ (𝐴𝐹𝑥 ∧ 𝐴 ∈ 𝐵)) |
| 3 | 2 | rbaib 926 | . . 3 ⊢ (𝐴 ∈ 𝐵 → (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ 𝐴𝐹𝑥)) |
| 4 | 3 | iotabidv 5301 | . 2 ⊢ (𝐴 ∈ 𝐵 → (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) = (℩𝑥𝐴𝐹𝑥)) |
| 5 | df-fv 5326 | . 2 ⊢ ((𝐹 ↾ 𝐵)‘𝐴) = (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) | |
| 6 | df-fv 5326 | . 2 ⊢ (𝐹‘𝐴) = (℩𝑥𝐴𝐹𝑥) | |
| 7 | 4, 5, 6 | 3eqtr4g 2287 | 1 ⊢ (𝐴 ∈ 𝐵 → ((𝐹 ↾ 𝐵)‘𝐴) = (𝐹‘𝐴)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 ∈ wcel 2200 class class class wbr 4083 ↾ cres 4721 ℩cio 5276 ‘cfv 5318 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4258 ax-pr 4293 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-br 4084 df-opab 4146 df-xp 4725 df-res 4731 df-iota 5278 df-fv 5326 |
| This theorem is referenced by: fvresd 5654 funssfv 5655 feqresmpt 5690 fvreseq 5740 respreima 5765 ffvresb 5800 fnressn 5829 fressnfv 5830 fvresi 5836 fvunsng 5837 fvsnun1 5840 fvsnun2 5841 fsnunfv 5844 funfvima 5875 isoresbr 5939 isores3 5945 isoini2 5949 ovres 6151 ofres 6239 offres 6286 fo1stresm 6313 fo2ndresm 6314 fo2ndf 6379 f1o2ndf1 6380 smores 6444 smores2 6446 tfrlem1 6460 rdgival 6534 frec0g 6549 freccllem 6554 frecsuclem 6558 frecrdg 6560 resixp 6888 djulclr 7227 djurclr 7228 djur 7247 updjudhcoinlf 7258 updjudhcoinrg 7259 updjud 7260 finomni 7318 exmidfodomrlemrALT 7392 addpiord 7514 mulpiord 7515 suplocexprlemell 7911 fseq1p1m1 10302 seq3feq2 10710 seqf1oglem2 10754 seq3coll 11077 pfxccat1 11249 shftidt 11359 climres 11829 fisumss 11918 isumclim3 11949 fsum2dlemstep 11960 fprodssdc 12116 fprod2dlemstep 12148 reeff1 12226 eucalgcvga 12595 eucalg 12596 strslfv2d 13090 setsslid 13098 setsslnid 13099 resmhm 13535 resghm 13812 rngmgpf 13915 mgpf 13989 znf1o 14630 cnptopresti 14927 cnptoprest 14928 lmres 14937 tx1cn 14958 tx2cn 14959 cnmpt1st 14977 cnmpt2nd 14978 remetdval 15236 rescncf 15270 limcdifap 15351 limcresi 15355 plyreres 15453 reeff1o 15462 reefiso 15466 ioocosf1o 15543 relogcl 15551 relogef 15553 logltb 15563 mpodvdsmulf1o 15679 fsumdvdsmul 15680 djucllem 16219 012of 16416 2o01f 16417 |
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