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Theorem f1setexg 6951
Description: The set of injections between two sets exists. (Contributed by AV, 14-Aug-2024.)
Assertion
Ref Expression
f1setexg  |-  ( ( A  e.  V  /\  B  e.  W )  ->  { f  |  f : A -1-1-> B }  e.  _V )
Distinct variable groups:    A, f    B, f
Allowed substitution hints:    V( f)    W( f)

Proof of Theorem f1setexg
StepHypRef Expression
1 df-f1 5382 . . 3  |-  ( f : A -1-1-> B  <->  ( f : A --> B  /\  Fun  `' f ) )
21abbii 2354 . 2  |-  { f  |  f : A -1-1-> B }  =  { f  |  ( f : A --> B  /\  Fun  `' f ) }
32fabexg 5579 1  |-  ( ( A  e.  V  /\  B  e.  W )  ->  { f  |  f : A -1-1-> B }  e.  _V )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    /\ wa 104    e. wcel 2209   {cab 2224   _Vcvv 2821   `'ccnv 4773   Fun wfun 5371   -->wf 5373   -1-1->wf1 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-14 2212  ax-ext 2220  ax-sep 4249  ax-pow 4311  ax-pr 4346  ax-un 4578
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  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 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-br 4131  df-opab 4193  df-xp 4780  df-rel 4781  df-cnv 4782  df-dm 4784  df-rn 4785  df-fun 5379  df-fn 5380  df-f 5381  df-f1 5382
This theorem is used by:  hashf1lem1  11285
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