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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 2805 | . . . . 5 ⊢ 𝑥 ∈ V | |
| 2 | 1 | brres 5019 | . . . 4 ⊢ (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ (𝐴𝐹𝑥 ∧ 𝐴 ∈ 𝐵)) |
| 3 | 2 | rbaib 928 | . . 3 ⊢ (𝐴 ∈ 𝐵 → (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ 𝐴𝐹𝑥)) |
| 4 | 3 | iotabidv 5309 | . 2 ⊢ (𝐴 ∈ 𝐵 → (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) = (℩𝑥𝐴𝐹𝑥)) |
| 5 | df-fv 5334 | . 2 ⊢ ((𝐹 ↾ 𝐵)‘𝐴) = (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) | |
| 6 | df-fv 5334 | . 2 ⊢ (𝐹‘𝐴) = (℩𝑥𝐴𝐹𝑥) | |
| 7 | 4, 5, 6 | 3eqtr4g 2289 | 1 ⊢ (𝐴 ∈ 𝐵 → ((𝐹 ↾ 𝐵)‘𝐴) = (𝐹‘𝐴)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1397 ∈ wcel 2202 class class class wbr 4088 ↾ cres 4727 ℩cio 5284 ‘cfv 5326 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-opab 4151 df-xp 4731 df-res 4737 df-iota 5286 df-fv 5334 |
| This theorem is referenced by: fvresd 5664 funssfv 5665 feqresmpt 5700 fvreseq 5750 respreima 5775 ffvresb 5810 fnressn 5840 fressnfv 5841 fvresi 5847 fvunsng 5848 fvsnun1 5851 fvsnun2 5852 fsnunfv 5855 funfvima 5886 isoresbr 5950 isores3 5956 isoini2 5960 ovres 6162 ofres 6250 offres 6297 fo1stresm 6324 fo2ndresm 6325 fo2ndf 6392 f1o2ndf1 6393 smores 6458 smores2 6460 tfrlem1 6474 rdgival 6548 frec0g 6563 freccllem 6568 frecsuclem 6572 frecrdg 6574 resixp 6902 djulclr 7248 djurclr 7249 djur 7268 updjudhcoinlf 7279 updjudhcoinrg 7280 updjud 7281 finomni 7339 exmidfodomrlemrALT 7414 addpiord 7536 mulpiord 7537 suplocexprlemell 7933 fseq1p1m1 10329 seq3feq2 10739 seqf1oglem2 10783 seq3coll 11107 pfxccat1 11287 shftidt 11398 climres 11868 fisumss 11958 isumclim3 11989 fsum2dlemstep 12000 fprodssdc 12156 fprod2dlemstep 12188 reeff1 12266 eucalgcvga 12635 eucalg 12636 strslfv2d 13130 setsslid 13138 setsslnid 13139 resmhm 13575 resghm 13852 rngmgpf 13956 mgpf 14030 znf1o 14671 cnptopresti 14968 cnptoprest 14969 lmres 14978 tx1cn 14999 tx2cn 15000 cnmpt1st 15018 cnmpt2nd 15019 remetdval 15277 rescncf 15311 limcdifap 15392 limcresi 15396 plyreres 15494 reeff1o 15503 reefiso 15507 ioocosf1o 15584 relogcl 15592 relogef 15594 logltb 15604 mpodvdsmulf1o 15720 fsumdvdsmul 15721 djucllem 16422 012of 16618 2o01f 16619 |
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