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Theorem oprab4 5595
Description: Two ways to state the domain of an operation. (Contributed by FL, 24-Jan-2010.)
Assertion
Ref Expression
oprab4  |-  { <. <.
x ,  y >. ,  z >.  |  (
<. x ,  y >.  e.  ( A  X.  B
)  /\  ph ) }  =  { <. <. x ,  y >. ,  z
>.  |  ( (
x  e.  A  /\  y  e.  B )  /\  ph ) }
Distinct variable group:    x, y, z
Allowed substitution hints:    ph( x, y, z)    A( x, y, z)    B( x, y, z)

Proof of Theorem oprab4
StepHypRef Expression
1 opelxp 4392 . . 3  |-  ( <.
x ,  y >.  e.  ( A  X.  B
)  <->  ( x  e.  A  /\  y  e.  B ) )
21anbi1i 445 . 2  |-  ( (
<. x ,  y >.  e.  ( A  X.  B
)  /\  ph )  <->  ( (
x  e.  A  /\  y  e.  B )  /\  ph ) )
32oprabbii 5580 1  |-  { <. <.
x ,  y >. ,  z >.  |  (
<. x ,  y >.  e.  ( A  X.  B
)  /\  ph ) }  =  { <. <. x ,  y >. ,  z
>.  |  ( (
x  e.  A  /\  y  e.  B )  /\  ph ) }
Colors of variables: wff set class
Syntax hints:    /\ wa 102    = wceq 1284    e. wcel 1433   <.cop 3401    X. cxp 4361   {coprab 5533
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-io 662  ax-5 1376  ax-7 1377  ax-gen 1378  ax-ie1 1422  ax-ie2 1423  ax-8 1435  ax-10 1436  ax-11 1437  ax-i12 1438  ax-bndl 1439  ax-4 1440  ax-14 1445  ax-17 1459  ax-i9 1463  ax-ial 1467  ax-i5r 1468  ax-ext 2063  ax-sep 3896  ax-pow 3948  ax-pr 3964
This theorem depends on definitions:  df-bi 115  df-3an 921  df-tru 1287  df-nf 1390  df-sb 1686  df-clab 2068  df-cleq 2074  df-clel 2077  df-nfc 2208  df-ral 2353  df-rex 2354  df-v 2603  df-un 2977  df-in 2979  df-ss 2986  df-pw 3384  df-sn 3404  df-pr 3405  df-op 3407  df-opab 3840  df-xp 4369  df-oprab 5536
This theorem is referenced by: (None)
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