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Theorem oprab4 6091
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 4755 . . 3  |-  ( <.
x ,  y >.  e.  ( A  X.  B
)  <->  ( x  e.  A  /\  y  e.  B ) )
21anbi1i 458 . 2  |-  ( (
<. x ,  y >.  e.  ( A  X.  B
)  /\  ph )  <->  ( (
x  e.  A  /\  y  e.  B )  /\  ph ) )
32oprabbii 6075 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 104    = wceq 1397    e. wcel 2202   <.cop 3672    X. cxp 4723   {coprab 6018
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ral 2515  df-rex 2516  df-v 2804  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-opab 4151  df-xp 4731  df-oprab 6021
This theorem is referenced by: (None)
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