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Theorem funeqd 5399
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 5397 . 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 5371
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 4131  df-opab 4193  df-rel 4781  df-cnv 4782  df-co 4783  df-fun 5379
This theorem is used by:  funopg  5411  funsng  5427  funcnvuni  5450  f1eq1  5593  f1ssf1  5671  funopsn  5891  frecuzrdgtclt  10871  fundm2domnop0  11314  shftfn  11603  ennnfonelemfun  13357  ennnfonelemf1  13358  isstruct2im  13411  isstruct2r  13412  structfung  13418  setsfun  13436  setsfun0  13437  strslfv3  13447  uhgrspansubgrlem  16615  p1evtxdeqfilem  16650  istrl  16724  trlsegvdeglem2  16800  trlsegvdeglem3  16801  funmptd  16929
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