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Theorem fex2 5356
Description: A function with bounded domain and range is a set. This version is proven without the Axiom of Replacement. (Contributed by Mario Carneiro, 24-Jun-2015.)
Assertion
Ref Expression
fex2  |-  ( ( F : A --> B  /\  A  e.  V  /\  B  e.  W )  ->  F  e.  _V )

Proof of Theorem fex2
StepHypRef Expression
1 xpexg 4718 . . 3  |-  ( ( A  e.  V  /\  B  e.  W )  ->  ( A  X.  B
)  e.  _V )
213adant1 1005 . 2  |-  ( ( F : A --> B  /\  A  e.  V  /\  B  e.  W )  ->  ( A  X.  B
)  e.  _V )
3 fssxp 5355 . . 3  |-  ( F : A --> B  ->  F  C_  ( A  X.  B ) )
433ad2ant1 1008 . 2  |-  ( ( F : A --> B  /\  A  e.  V  /\  B  e.  W )  ->  F  C_  ( A  X.  B ) )
52, 4ssexd 4122 1  |-  ( ( F : A --> B  /\  A  e.  V  /\  B  e.  W )  ->  F  e.  _V )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ w3a 968    e. wcel 2136   _Vcvv 2726    C_ wss 3116    X. cxp 4602   -->wf 5184
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-13 2138  ax-14 2139  ax-ext 2147  ax-sep 4100  ax-pow 4153  ax-pr 4187  ax-un 4411
This theorem depends on definitions:  df-bi 116  df-3an 970  df-tru 1346  df-nf 1449  df-sb 1751  df-eu 2017  df-mo 2018  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-ral 2449  df-rex 2450  df-v 2728  df-un 3120  df-in 3122  df-ss 3129  df-pw 3561  df-sn 3582  df-pr 3583  df-op 3585  df-uni 3790  df-br 3983  df-opab 4044  df-xp 4610  df-rel 4611  df-cnv 4612  df-dm 4614  df-rn 4615  df-fun 5190  df-fn 5191  df-f 5192
This theorem is referenced by:  elmapg  6627  f1oen2g  6721  f1dom2g  6722  dom3d  6740  mapxpen  6814  climrecvg1n  11289  cnpfval  12835  txcn  12915  blfvalps  13025
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