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Theorem funeqd 5402
Description: Equality deduction for the function predicate. (Contributed by NM, 23-Feb-2013.)
Hypothesis
Ref Expression
funeqd.1  |-  ( ph  ->  A  =  B )
Assertion
Ref Expression
funeqd  |-  ( ph  ->  ( Fun  A  <->  Fun  B ) )

Proof of Theorem funeqd
StepHypRef Expression
1 funeqd.1 . 2  |-  ( ph  ->  A  =  B )
2 funeq 5400 . 2  |-  ( A  =  B  ->  ( Fun  A  <->  Fun  B ) )
31, 2syl 14 1  |-  ( ph  ->  ( Fun  A  <->  Fun  B ) )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    <-> wb 105    = wceq 1402   Fun wfun 5374
This proof depends on 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 proof depends on definitions:  df-bi 117  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-in 3226  df-ss 3233  df-br 4132  df-opab 4194  df-rel 4783  df-cnv 4784  df-co 4785  df-fun 5382
This theorem is used by:  funopg  5414  funsng  5430  funcnvuni  5453  f1eq1  5596  f1ssf1  5674  funopsn  5894  frecuzrdgtclt  10879  fundm2domnop0  11322  shftfn  11611  ennnfonelemfun  13366  ennnfonelemf1  13367  isstruct2im  13420  isstruct2r  13421  structfung  13427  setsfun  13445  setsfun0  13446  strslfv3  13456  uhgrspansubgrlem  16722  p1evtxdeqfilem  16757  istrl  16831  trlsegvdeglem2  16907  trlsegvdeglem3  16908  funmptd  17036
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