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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 2824 | . . . . 5 ⊢ 𝑥 ∈ V | |
| 2 | 1 | brres 5064 | . . . 4 ⊢ (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ (𝐴𝐹𝑥 ∧ 𝐴 ∈ 𝐵)) |
| 3 | 2 | rbaib 933 | . . 3 ⊢ (𝐴 ∈ 𝐵 → (𝐴(𝐹 ↾ 𝐵)𝑥 ↔ 𝐴𝐹𝑥)) |
| 4 | 3 | iotabidv 5355 | . 2 ⊢ (𝐴 ∈ 𝐵 → (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) = (℩𝑥𝐴𝐹𝑥)) |
| 5 | df-fv 5380 | . 2 ⊢ ((𝐹 ↾ 𝐵)‘𝐴) = (℩𝑥𝐴(𝐹 ↾ 𝐵)𝑥) | |
| 6 | df-fv 5380 | . 2 ⊢ (𝐹‘𝐴) = (℩𝑥𝐴𝐹𝑥) | |
| 7 | 4, 5, 6 | 3eqtr4g 2296 | 1 ⊢ (𝐴 ∈ 𝐵 → ((𝐹 ↾ 𝐵)‘𝐴) = (𝐹‘𝐴)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1402 ∈ wcel 2209 class class class wbr 4125 ↾ cres 4771 ℩cio 5330 ‘cfv 5372 |
| 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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4244 ax-pow 4306 ax-pr 4341 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-br 4126 df-opab 4188 df-xp 4775 df-res 4781 df-iota 5332 df-fv 5380 |
| This theorem is referenced by: fvresd 5715 funssfv 5716 feqresmpt 5751 fvreseq 5803 respreima 5827 ffvresb 5862 fnressn 5892 fressnfv 5893 fvresi 5899 fvunsng 5900 fvsnun1 5903 fvsnun2 5904 fsnunfv 5907 funfvima 5940 isoresbr 6005 isores3 6011 isoini2 6015 ovres 6219 ofres 6307 offres 6358 fo1stresm 6385 fo2ndresm 6386 fo2ndf 6453 f1o2ndf1 6454 smores 6553 smores2 6555 tfrlem1 6569 rdgival 6643 frec0g 6658 freccllem 6663 frecsuclem 6667 frecrdg 6669 resixp 7005 djulclr 7379 djurclr 7380 djur 7399 updjudhcoinlf 7410 updjudhcoinrg 7411 updjud 7412 finomni 7470 exmidfodomrlemrALT 7545 addpiord 7673 mulpiord 7674 suplocexprlemell 8070 fseq1p1m1 10479 seq3feq2 10891 seqf1oglem2 10935 hashf1lem1 11263 seq3coll 11272 pfxccat1 11452 shftidt 11576 climres 12047 fisumss 12137 isumclim3 12168 fsum2dlemstep 12179 fprodssdc 12335 fprod2dlemstep 12367 reeff1 12445 eucalgcvga 12814 eucalg 12815 strslfv2d 13373 setsslid 13381 setsslnid 13382 resmhm 13771 resghm 14040 gsummptfidmadd 14138 gsumsubmclfi 14140 rngmgpf 14211 mgpf 14289 znf1o 14958 cnptopresti 15262 cnptoprest 15263 lmres 15272 tx1cn 15293 tx2cn 15294 cnmpt1st 15312 cnmpt2nd 15313 remetdval 15571 rescncf 15605 limcdifap 15686 limcresi 15690 plyreres 15788 reeff1o 15797 reefiso 15801 ioocosf1o 15878 relogcl 15886 relogef 15888 logltb 15898 mpodvdsmulf1o 16018 fsumdvdsmul 16019 djucllem 16742 012of 16937 2o01f 16938 |
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