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Theorem imaexg 4893
Description: The image of a set is a set. Theorem 3.17 of [Monk1] p. 39. (Contributed by NM, 24-Jul-1995.)
Assertion
Ref Expression
imaexg  |-  ( A  e.  V  ->  ( A " B )  e. 
_V )

Proof of Theorem imaexg
StepHypRef Expression
1 imassrn 4892 . 2  |-  ( A
" B )  C_  ran  A
2 rnexg 4804 . 2  |-  ( A  e.  V  ->  ran  A  e.  _V )
3 ssexg 4067 . 2  |-  ( ( ( A " B
)  C_  ran  A  /\  ran  A  e.  _V )  ->  ( A " B
)  e.  _V )
41, 2, 3sylancr 410 1  |-  ( A  e.  V  ->  ( A " B )  e. 
_V )
Colors of variables: wff set class
Syntax hints:    -> wi 4    e. wcel 1480   _Vcvv 2686    C_ wss 3071   ran crn 4540   "cima 4542
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 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-13 1491  ax-14 1492  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2121  ax-sep 4046  ax-pow 4098  ax-pr 4131  ax-un 4355
This theorem depends on definitions:  df-bi 116  df-3an 964  df-tru 1334  df-nf 1437  df-sb 1736  df-eu 2002  df-mo 2003  df-clab 2126  df-cleq 2132  df-clel 2135  df-nfc 2270  df-ral 2421  df-rex 2422  df-v 2688  df-un 3075  df-in 3077  df-ss 3084  df-pw 3512  df-sn 3533  df-pr 3534  df-op 3536  df-uni 3737  df-br 3930  df-opab 3990  df-xp 4545  df-cnv 4547  df-dm 4549  df-rn 4550  df-res 4551  df-ima 4552
This theorem is referenced by:  imaex  4894  ecexg  6433  fopwdom  6730  isinfinf  6791
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