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Theorem ovssunirng 6087
Description: The result of an operation value is always a subset of the union of the range. (Contributed by Mario Carneiro, 12-Jan-2017.)
Assertion
Ref Expression
ovssunirng  |-  ( ( X  e.  V  /\  Y  e.  W )  ->  ( X F Y )  C_  U. ran  F
)

Proof of Theorem ovssunirng
StepHypRef Expression
1 df-ov 6055 . 2  |-  ( X F Y )  =  ( F `  <. X ,  Y >. )
2 opexg 4346 . . 3  |-  ( ( X  e.  V  /\  Y  e.  W )  -> 
<. X ,  Y >.  e. 
_V )
3 fvssunirng 5687 . . 3  |-  ( <. X ,  Y >.  e. 
_V  ->  ( F `  <. X ,  Y >. ) 
C_  U. ran  F )
42, 3syl 14 . 2  |-  ( ( X  e.  V  /\  Y  e.  W )  ->  ( F `  <. X ,  Y >. )  C_ 
U. ran  F )
51, 4eqsstrid 3286 1  |-  ( ( X  e.  V  /\  Y  e.  W )  ->  ( X F Y )  C_  U. ran  F
)
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    e. wcel 2205   _Vcvv 2815    C_ wss 3213   <.cop 3694   U.cuni 3916   ran crn 4752   ` cfv 5354  (class class class)co 6052
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2208  ax-ext 2216  ax-sep 4230  ax-pow 4289  ax-pr 4324
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ral 2527  df-rex 2528  df-v 2817  df-un 3217  df-in 3219  df-ss 3226  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-br 4112  df-opab 4174  df-cnv 4759  df-dm 4761  df-rn 4762  df-iota 5314  df-fv 5362  df-ov 6055
This theorem is referenced by:  prdsvallem  13506
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