ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  fnssres GIF version

Theorem fnssres 5374
Description: Restriction of a function with a subclass of its domain. (Contributed by NM, 2-Aug-1994.)
Assertion
Ref Expression
fnssres ((𝐹 Fn 𝐴𝐵𝐴) → (𝐹𝐵) Fn 𝐵)

Proof of Theorem fnssres
StepHypRef Expression
1 fnssresb 5373 . 2 (𝐹 Fn 𝐴 → ((𝐹𝐵) Fn 𝐵𝐵𝐴))
21biimpar 297 1 ((𝐹 Fn 𝐴𝐵𝐴) → (𝐹𝐵) Fn 𝐵)
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  wss 3157  cres 4666   Fn wfn 5254
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 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-14 2170  ax-ext 2178  ax-sep 4152  ax-pow 4208  ax-pr 4243
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1475  df-sb 1777  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ral 2480  df-rex 2481  df-v 2765  df-un 3161  df-in 3163  df-ss 3170  df-pw 3608  df-sn 3629  df-pr 3630  df-op 3632  df-br 4035  df-opab 4096  df-xp 4670  df-rel 4671  df-cnv 4672  df-co 4673  df-dm 4674  df-res 4676  df-fun 5261  df-fn 5262
This theorem is referenced by:  fnresin1  5375  fnresin2  5376  fssres  5436  fvreseq  5668  fnreseql  5675  ffvresb  5728  fnressn  5751  ofres  6154  tfrlem1  6375  frecrdg  6475  resixp  6801  resfnfinfinss  7014  suplocexprlemell  7797  seq3feq2  10585  seqf1oglem2  10629  reeff1  11882  rngmgpf  13569  mgpf  13643  upxp  14592  uptx  14594  cnmpt1st  14608  cnmpt2nd  14609  ioocosf1o  15174  mpodvdsmulf1o  15310
  Copyright terms: Public domain W3C validator