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Theorem fovrnd 5997
Description: An operation's value belongs to its codomain. (Contributed by Mario Carneiro, 29-Dec-2016.)
Hypotheses
Ref Expression
fovrnd.1  |-  ( ph  ->  F : ( R  X.  S ) --> C )
fovrnd.2  |-  ( ph  ->  A  e.  R )
fovrnd.3  |-  ( ph  ->  B  e.  S )
Assertion
Ref Expression
fovrnd  |-  ( ph  ->  ( A F B )  e.  C )

Proof of Theorem fovrnd
StepHypRef Expression
1 fovrnd.1 . 2  |-  ( ph  ->  F : ( R  X.  S ) --> C )
2 fovrnd.2 . 2  |-  ( ph  ->  A  e.  R )
3 fovrnd.3 . 2  |-  ( ph  ->  B  e.  S )
4 fovrn 5995 . 2  |-  ( ( F : ( R  X.  S ) --> C  /\  A  e.  R  /\  B  e.  S
)  ->  ( A F B )  e.  C
)
51, 2, 3, 4syl3anc 1233 1  |-  ( ph  ->  ( A F B )  e.  C )
Colors of variables: wff set class
Syntax hints:    -> wi 4    e. wcel 2141    X. cxp 4609   -->wf 5194  (class class class)co 5853
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 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-pow 4160  ax-pr 4194
This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ral 2453  df-rex 2454  df-v 2732  df-sbc 2956  df-un 3125  df-in 3127  df-ss 3134  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-uni 3797  df-br 3990  df-opab 4051  df-id 4278  df-xp 4617  df-rel 4618  df-cnv 4619  df-co 4620  df-dm 4621  df-rn 4622  df-iota 5160  df-fun 5200  df-fn 5201  df-f 5202  df-fv 5206  df-ov 5856
This theorem is referenced by:  eroveu  6604  isxmet2d  13142  ismet2  13148  comet  13293  bdmetval  13294  txmetcnp  13312  limccnp2lem  13439  limccnp2cntop  13440
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