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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 5839 fressnfv 5840 fvresi 5846 fvunsng 5847 fvsnun1 5850 fvsnun2 5851 fsnunfv 5854 funfvima 5885 isoresbr 5949 isores3 5955 isoini2 5959 ovres 6161 ofres 6249 offres 6296 fo1stresm 6323 fo2ndresm 6324 fo2ndf 6391 f1o2ndf1 6392 smores 6457 smores2 6459 tfrlem1 6473 rdgival 6547 frec0g 6562 freccllem 6567 frecsuclem 6571 frecrdg 6573 resixp 6901 djulclr 7247 djurclr 7248 djur 7267 updjudhcoinlf 7278 updjudhcoinrg 7279 updjud 7280 finomni 7338 exmidfodomrlemrALT 7413 addpiord 7535 mulpiord 7536 suplocexprlemell 7932 fseq1p1m1 10328 seq3feq2 10737 seqf1oglem2 10781 seq3coll 11105 pfxccat1 11282 shftidt 11393 climres 11863 fisumss 11952 isumclim3 11983 fsum2dlemstep 11994 fprodssdc 12150 fprod2dlemstep 12182 reeff1 12260 eucalgcvga 12629 eucalg 12630 strslfv2d 13124 setsslid 13132 setsslnid 13133 resmhm 13569 resghm 13846 rngmgpf 13949 mgpf 14023 znf1o 14664 cnptopresti 14961 cnptoprest 14962 lmres 14971 tx1cn 14992 tx2cn 14993 cnmpt1st 15011 cnmpt2nd 15012 remetdval 15270 rescncf 15304 limcdifap 15385 limcresi 15389 plyreres 15487 reeff1o 15496 reefiso 15500 ioocosf1o 15577 relogcl 15585 relogef 15587 logltb 15597 mpodvdsmulf1o 15713 fsumdvdsmul 15714 djucllem 16396 012of 16592 2o01f 16593 |
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