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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 2803 | . . . . 5 ⊢ 𝑥 ∈ V | |
| 2 | 1 | brres 5017 | . . . 4 ⊢ (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ (𝐴𝐹𝑥 ∧ 𝐴 ∈ 𝐵)) |
| 3 | 2 | rbaib 926 | . . 3 ⊢ (𝐴 ∈ 𝐵 → (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ 𝐴𝐹𝑥)) |
| 4 | 3 | iotabidv 5307 | . 2 ⊢ (𝐴 ∈ 𝐵 → (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) = (℩𝑥𝐴𝐹𝑥)) |
| 5 | df-fv 5332 | . 2 ⊢ ((𝐹 ↾ 𝐵)‘𝐴) = (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) | |
| 6 | df-fv 5332 | . 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 4086 ↾ cres 4725 ℩cio 5282 ‘cfv 5324 |
| 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 4205 ax-pow 4262 ax-pr 4297 |
| 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 2802 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-br 4087 df-opab 4149 df-xp 4729 df-res 4735 df-iota 5284 df-fv 5332 |
| This theorem is referenced by: fvresd 5660 funssfv 5661 feqresmpt 5696 fvreseq 5746 respreima 5771 ffvresb 5806 fnressn 5835 fressnfv 5836 fvresi 5842 fvunsng 5843 fvsnun1 5846 fvsnun2 5847 fsnunfv 5850 funfvima 5881 isoresbr 5945 isores3 5951 isoini2 5955 ovres 6157 ofres 6245 offres 6292 fo1stresm 6319 fo2ndresm 6320 fo2ndf 6387 f1o2ndf1 6388 smores 6453 smores2 6455 tfrlem1 6469 rdgival 6543 frec0g 6558 freccllem 6563 frecsuclem 6567 frecrdg 6569 resixp 6897 djulclr 7239 djurclr 7240 djur 7259 updjudhcoinlf 7270 updjudhcoinrg 7271 updjud 7272 finomni 7330 exmidfodomrlemrALT 7404 addpiord 7526 mulpiord 7527 suplocexprlemell 7923 fseq1p1m1 10319 seq3feq2 10728 seqf1oglem2 10772 seq3coll 11096 pfxccat1 11273 shftidt 11384 climres 11854 fisumss 11943 isumclim3 11974 fsum2dlemstep 11985 fprodssdc 12141 fprod2dlemstep 12173 reeff1 12251 eucalgcvga 12620 eucalg 12621 strslfv2d 13115 setsslid 13123 setsslnid 13124 resmhm 13560 resghm 13837 rngmgpf 13940 mgpf 14014 znf1o 14655 cnptopresti 14952 cnptoprest 14953 lmres 14962 tx1cn 14983 tx2cn 14984 cnmpt1st 15002 cnmpt2nd 15003 remetdval 15261 rescncf 15295 limcdifap 15376 limcresi 15380 plyreres 15478 reeff1o 15487 reefiso 15491 ioocosf1o 15568 relogcl 15576 relogef 15578 logltb 15588 mpodvdsmulf1o 15704 fsumdvdsmul 15705 djucllem 16332 012of 16528 2o01f 16529 |
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