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Theorem ovid 6149
Description: The value of an operation class abstraction. (Contributed by NM, 16-May-1995.) (Revised by David Abernethy, 19-Jun-2012.)
Hypotheses
Ref Expression
ovid.1  |-  ( ( x  e.  R  /\  y  e.  S )  ->  E! z ph )
ovid.2  |-  F  =  { <. <. x ,  y
>. ,  z >.  |  ( ( x  e.  R  /\  y  e.  S )  /\  ph ) }
Assertion
Ref Expression
ovid  |-  ( ( x  e.  R  /\  y  e.  S )  ->  ( ( x F y )  =  z  <->  ph ) )
Distinct variable groups:    x, y,
z    z, R    z, S
Allowed substitution hints:    ph( x, y, z)    R( x, y)    S( x, y)    F( x, y, z)

Proof of Theorem ovid
StepHypRef Expression
1 df-ov 6043 . . 3  |-  ( x F y )  =  ( F `  <. x ,  y >. )
21eqeq1i 2411 . 2  |-  ( ( x F y )  =  z  <->  ( F `  <. x ,  y
>. )  =  z
)
3 ovid.1 . . . . . 6  |-  ( ( x  e.  R  /\  y  e.  S )  ->  E! z ph )
43fnoprab 6132 . . . . 5  |-  { <. <.
x ,  y >. ,  z >.  |  ( ( x  e.  R  /\  y  e.  S
)  /\  ph ) }  Fn  { <. x ,  y >.  |  ( x  e.  R  /\  y  e.  S ) }
5 ovid.2 . . . . . 6  |-  F  =  { <. <. x ,  y
>. ,  z >.  |  ( ( x  e.  R  /\  y  e.  S )  /\  ph ) }
65fneq1i 5498 . . . . 5  |-  ( F  Fn  { <. x ,  y >.  |  ( x  e.  R  /\  y  e.  S ) } 
<->  { <. <. x ,  y
>. ,  z >.  |  ( ( x  e.  R  /\  y  e.  S )  /\  ph ) }  Fn  { <. x ,  y >.  |  ( x  e.  R  /\  y  e.  S ) } )
74, 6mpbir 201 . . . 4  |-  F  Fn  {
<. x ,  y >.  |  ( x  e.  R  /\  y  e.  S ) }
8 opabid 4421 . . . . 5  |-  ( <.
x ,  y >.  e.  { <. x ,  y
>.  |  ( x  e.  R  /\  y  e.  S ) }  <->  ( x  e.  R  /\  y  e.  S ) )
98biimpri 198 . . . 4  |-  ( ( x  e.  R  /\  y  e.  S )  -> 
<. x ,  y >.  e.  { <. x ,  y
>.  |  ( x  e.  R  /\  y  e.  S ) } )
10 fnopfvb 5727 . . . 4  |-  ( ( F  Fn  { <. x ,  y >.  |  ( x  e.  R  /\  y  e.  S ) }  /\  <. x ,  y
>.  e.  { <. x ,  y >.  |  ( x  e.  R  /\  y  e.  S ) } )  ->  (
( F `  <. x ,  y >. )  =  z  <->  <. <. x ,  y
>. ,  z >.  e.  F ) )
117, 9, 10sylancr 645 . . 3  |-  ( ( x  e.  R  /\  y  e.  S )  ->  ( ( F `  <. x ,  y >.
)  =  z  <->  <. <. x ,  y >. ,  z
>.  e.  F ) )
125eleq2i 2468 . . . . 5  |-  ( <. <. x ,  y >. ,  z >.  e.  F  <->  <. <. x ,  y >. ,  z >.  e.  { <. <. x ,  y
>. ,  z >.  |  ( ( x  e.  R  /\  y  e.  S )  /\  ph ) } )
13 oprabid 6064 . . . . 5  |-  ( <. <. x ,  y >. ,  z >.  e.  { <. <. x ,  y
>. ,  z >.  |  ( ( x  e.  R  /\  y  e.  S )  /\  ph ) }  <->  ( ( x  e.  R  /\  y  e.  S )  /\  ph ) )
1412, 13bitri 241 . . . 4  |-  ( <. <. x ,  y >. ,  z >.  e.  F  <->  ( ( x  e.  R  /\  y  e.  S
)  /\  ph ) )
1514baib 872 . . 3  |-  ( ( x  e.  R  /\  y  e.  S )  ->  ( <. <. x ,  y
>. ,  z >.  e.  F  <->  ph ) )
1611, 15bitrd 245 . 2  |-  ( ( x  e.  R  /\  y  e.  S )  ->  ( ( F `  <. x ,  y >.
)  =  z  <->  ph ) )
172, 16syl5bb 249 1  |-  ( ( x  e.  R  /\  y  e.  S )  ->  ( ( x F y )  =  z  <->  ph ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 177    /\ wa 359    = wceq 1649    e. wcel 1721   E!weu 2254   <.cop 3777   {copab 4225    Fn wfn 5408   ` cfv 5413  (class class class)co 6040   {coprab 6041
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1552  ax-5 1563  ax-17 1623  ax-9 1662  ax-8 1683  ax-14 1725  ax-6 1740  ax-7 1745  ax-11 1757  ax-12 1946  ax-ext 2385  ax-sep 4290  ax-nul 4298  ax-pr 4363
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1325  df-ex 1548  df-nf 1551  df-sb 1656  df-eu 2258  df-mo 2259  df-clab 2391  df-cleq 2397  df-clel 2400  df-nfc 2529  df-ne 2569  df-ral 2671  df-rex 2672  df-rab 2675  df-v 2918  df-sbc 3122  df-dif 3283  df-un 3285  df-in 3287  df-ss 3294  df-nul 3589  df-if 3700  df-sn 3780  df-pr 3781  df-op 3783  df-uni 3976  df-br 4173  df-opab 4227  df-id 4458  df-xp 4843  df-rel 4844  df-cnv 4845  df-co 4846  df-dm 4847  df-iota 5377  df-fun 5415  df-fn 5416  df-fv 5421  df-ov 6043  df-oprab 6044
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