ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  feq1d GIF version

Theorem feq1d 5518
Description: Equality deduction for functions. (Contributed by NM, 19-Feb-2008.)
Hypothesis
Ref Expression
feq1d.1 (𝜑𝐹 = 𝐺)
Assertion
Ref Expression
feq1d (𝜑 → (𝐹:𝐴𝐵𝐺:𝐴𝐵))

Proof of Theorem feq1d
StepHypRef Expression
1 feq1d.1 . 2 (𝜑𝐹 = 𝐺)
2 feq1 5514 . 2 (𝐹 = 𝐺 → (𝐹:𝐴𝐵𝐺:𝐴𝐵))
31, 2syl 14 1 (𝜑 → (𝐹:𝐴𝐵𝐺:𝐴𝐵))
Colors of variables: wff set class
Syntax hints:  wi 4  wb 105   = wceq 1402  wf 5371
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-ext 2220
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-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-sn 3714  df-pr 3715  df-op 3717  df-br 4129  df-opab 4191  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-fun 5377  df-fn 5378  df-f 5379
This theorem is referenced by:  feq12d  5521  fco2  5552  fssres2  5565  fresin  5566  fmpt3d  5858  fmptco  5868  fressnfv  5896  off  6309  caofinvl  6322  f2ndf  6456  eroprf  6896  pmresg  6951  pw2f1odclem  7128  fseq1p1m1  10484  mgmplusf  13669  mgmb1mgm1  13671  grpsubf  13867  lmodscaf  14630  lmbr  15297  blfps  15493  blf  15494  dvmptclx  15802  lgsfcl3  16123
  Copyright terms: Public domain W3C validator