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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 5014 | . . . 4 ⊢ (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ (𝐴𝐹𝑥 ∧ 𝐴 ∈ 𝐵)) |
| 3 | 2 | rbaib 926 | . . 3 ⊢ (𝐴 ∈ 𝐵 → (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ 𝐴𝐹𝑥)) |
| 4 | 3 | iotabidv 5304 | . 2 ⊢ (𝐴 ∈ 𝐵 → (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) = (℩𝑥𝐴𝐹𝑥)) |
| 5 | df-fv 5329 | . 2 ⊢ ((𝐹 ↾ 𝐵)‘𝐴) = (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) | |
| 6 | df-fv 5329 | . 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 4722 ℩cio 5279 ‘cfv 5321 |
| 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 4259 ax-pr 4294 |
| 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 4726 df-res 4732 df-iota 5281 df-fv 5329 |
| This theorem is referenced by: fvresd 5657 funssfv 5658 feqresmpt 5693 fvreseq 5743 respreima 5768 ffvresb 5803 fnressn 5832 fressnfv 5833 fvresi 5839 fvunsng 5840 fvsnun1 5843 fvsnun2 5844 fsnunfv 5847 funfvima 5878 isoresbr 5942 isores3 5948 isoini2 5952 ovres 6154 ofres 6242 offres 6289 fo1stresm 6316 fo2ndresm 6317 fo2ndf 6384 f1o2ndf1 6385 smores 6449 smores2 6451 tfrlem1 6465 rdgival 6539 frec0g 6554 freccllem 6559 frecsuclem 6563 frecrdg 6565 resixp 6893 djulclr 7232 djurclr 7233 djur 7252 updjudhcoinlf 7263 updjudhcoinrg 7264 updjud 7265 finomni 7323 exmidfodomrlemrALT 7397 addpiord 7519 mulpiord 7520 suplocexprlemell 7916 fseq1p1m1 10307 seq3feq2 10715 seqf1oglem2 10759 seq3coll 11082 pfxccat1 11255 shftidt 11365 climres 11835 fisumss 11924 isumclim3 11955 fsum2dlemstep 11966 fprodssdc 12122 fprod2dlemstep 12154 reeff1 12232 eucalgcvga 12601 eucalg 12602 strslfv2d 13096 setsslid 13104 setsslnid 13105 resmhm 13541 resghm 13818 rngmgpf 13921 mgpf 13995 znf1o 14636 cnptopresti 14933 cnptoprest 14934 lmres 14943 tx1cn 14964 tx2cn 14965 cnmpt1st 14983 cnmpt2nd 14984 remetdval 15242 rescncf 15276 limcdifap 15357 limcresi 15361 plyreres 15459 reeff1o 15468 reefiso 15472 ioocosf1o 15549 relogcl 15557 relogef 15559 logltb 15569 mpodvdsmulf1o 15685 fsumdvdsmul 15686 djucllem 16273 012of 16470 2o01f 16471 |
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