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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 2816 | . . . . 5 ⊢ 𝑥 ∈ V | |
| 2 | 1 | brres 5044 | . . . 4 ⊢ (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ (𝐴𝐹𝑥 ∧ 𝐴 ∈ 𝐵)) |
| 3 | 2 | rbaib 929 | . . 3 ⊢ (𝐴 ∈ 𝐵 → (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ 𝐴𝐹𝑥)) |
| 4 | 3 | iotabidv 5335 | . 2 ⊢ (𝐴 ∈ 𝐵 → (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) = (℩𝑥𝐴𝐹𝑥)) |
| 5 | df-fv 5360 | . 2 ⊢ ((𝐹 ↾ 𝐵)‘𝐴) = (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) | |
| 6 | df-fv 5360 | . 2 ⊢ (𝐹‘𝐴) = (℩𝑥𝐴𝐹𝑥) | |
| 7 | 4, 5, 6 | 3eqtr4g 2290 | 1 ⊢ (𝐴 ∈ 𝐵 → ((𝐹 ↾ 𝐵)‘𝐴) = (𝐹‘𝐴)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ∈ wcel 2203 class class class wbr 4109 ↾ cres 4751 ℩cio 5310 ‘cfv 5352 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2206 ax-ext 2214 ax-sep 4228 ax-pow 4287 ax-pr 4322 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ral 2525 df-rex 2526 df-v 2815 df-un 3215 df-in 3217 df-ss 3224 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-br 4110 df-opab 4172 df-xp 4755 df-res 4761 df-iota 5312 df-fv 5360 |
| This theorem is referenced by: fvresd 5695 funssfv 5696 feqresmpt 5731 fvreseq 5781 respreima 5805 ffvresb 5840 fnressn 5870 fressnfv 5871 fvresi 5877 fvunsng 5878 fvsnun1 5881 fvsnun2 5882 fsnunfv 5885 funfvima 5918 isoresbr 5982 isores3 5988 isoini2 5992 ovres 6194 ofres 6281 offres 6328 fo1stresm 6355 fo2ndresm 6356 fo2ndf 6423 f1o2ndf1 6424 smores 6523 smores2 6525 tfrlem1 6539 rdgival 6613 frec0g 6628 freccllem 6633 frecsuclem 6637 frecrdg 6639 resixp 6968 djulclr 7340 djurclr 7341 djur 7360 updjudhcoinlf 7371 updjudhcoinrg 7372 updjud 7373 finomni 7431 exmidfodomrlemrALT 7506 addpiord 7631 mulpiord 7632 suplocexprlemell 8028 fseq1p1m1 10428 seq3feq2 10838 seqf1oglem2 10882 seq3coll 11214 pfxccat1 11394 shftidt 11518 climres 11988 fisumss 12078 isumclim3 12109 fsum2dlemstep 12120 fprodssdc 12276 fprod2dlemstep 12308 reeff1 12386 eucalgcvga 12755 eucalg 12756 strslfv2d 13255 setsslid 13263 setsslnid 13264 resmhm 13700 resghm 13977 rngmgpf 14081 mgpf 14155 znf1o 14799 cnptopresti 15103 cnptoprest 15104 lmres 15113 tx1cn 15134 tx2cn 15135 cnmpt1st 15153 cnmpt2nd 15154 remetdval 15412 rescncf 15446 limcdifap 15527 limcresi 15531 plyreres 15629 reeff1o 15638 reefiso 15642 ioocosf1o 15719 relogcl 15727 relogef 15729 logltb 15739 mpodvdsmulf1o 15858 fsumdvdsmul 15859 djucllem 16572 012of 16767 2o01f 16768 |
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