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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 2806 | . . . . 5 ⊢ 𝑥 ∈ V | |
| 2 | 1 | brres 5025 | . . . 4 ⊢ (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ (𝐴𝐹𝑥 ∧ 𝐴 ∈ 𝐵)) |
| 3 | 2 | rbaib 929 | . . 3 ⊢ (𝐴 ∈ 𝐵 → (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ 𝐴𝐹𝑥)) |
| 4 | 3 | iotabidv 5316 | . 2 ⊢ (𝐴 ∈ 𝐵 → (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) = (℩𝑥𝐴𝐹𝑥)) |
| 5 | df-fv 5341 | . 2 ⊢ ((𝐹 ↾ 𝐵)‘𝐴) = (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) | |
| 6 | df-fv 5341 | . 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 1398 ∈ wcel 2202 class class class wbr 4093 ↾ cres 4733 ℩cio 5291 ‘cfv 5333 |
| 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 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-v 2805 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-br 4094 df-opab 4156 df-xp 4737 df-res 4743 df-iota 5293 df-fv 5341 |
| This theorem is referenced by: fvresd 5673 funssfv 5674 feqresmpt 5709 fvreseq 5759 respreima 5783 ffvresb 5818 fnressn 5848 fressnfv 5849 fvresi 5855 fvunsng 5856 fvsnun1 5859 fvsnun2 5860 fsnunfv 5863 funfvima 5896 isoresbr 5960 isores3 5966 isoini2 5970 ovres 6172 ofres 6259 offres 6306 fo1stresm 6333 fo2ndresm 6334 fo2ndf 6401 f1o2ndf1 6402 smores 6501 smores2 6503 tfrlem1 6517 rdgival 6591 frec0g 6606 freccllem 6611 frecsuclem 6615 frecrdg 6617 resixp 6945 djulclr 7291 djurclr 7292 djur 7311 updjudhcoinlf 7322 updjudhcoinrg 7323 updjud 7324 finomni 7382 exmidfodomrlemrALT 7457 addpiord 7579 mulpiord 7580 suplocexprlemell 7976 fseq1p1m1 10374 seq3feq2 10784 seqf1oglem2 10828 seq3coll 11152 pfxccat1 11332 shftidt 11456 climres 11926 fisumss 12016 isumclim3 12047 fsum2dlemstep 12058 fprodssdc 12214 fprod2dlemstep 12246 reeff1 12324 eucalgcvga 12693 eucalg 12694 strslfv2d 13188 setsslid 13196 setsslnid 13197 resmhm 13633 resghm 13910 rngmgpf 14014 mgpf 14088 znf1o 14730 cnptopresti 15032 cnptoprest 15033 lmres 15042 tx1cn 15063 tx2cn 15064 cnmpt1st 15082 cnmpt2nd 15083 remetdval 15341 rescncf 15375 limcdifap 15456 limcresi 15460 plyreres 15558 reeff1o 15567 reefiso 15571 ioocosf1o 15648 relogcl 15656 relogef 15658 logltb 15668 mpodvdsmulf1o 15787 fsumdvdsmul 15788 djucllem 16501 012of 16696 2o01f 16697 |
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