Theorem ovid 6777

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

Step	Hyp	Ref	Expression
1		df-ov 6653	. . 3 |- ( x F y ) = ( F ` <. x , y >. )
2	1	eqeq1i 2627	. 2 |- ( ( x F y ) = z <-> ( F ` <. x , y >. ) = z )
3		ovid.1	. . . . . 6 |- ( ( x e. R /\ y e. S ) -> E! z ph )
4	3	fnoprab 6763	. . . . 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 ) }
6	5	fneq1i 5985	. . . . 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 ) } )
7	4, 6	mpbir 221	. . . 4 |- F Fn { <. x , y >. | ( x e. R /\ y e. S ) }
8		opabid 4982	. . . . 5 |- ( <. x , y >. e. { <. x , y >. | ( x e. R /\ y e. S ) } <-> ( x e. R /\ y e. S ) )
9	8	biimpri 218	. . . 4 |- ( ( x e. R /\ y e. S ) -> <. x , y >. e. { <. x , y >. | ( x e. R /\ y e. S ) } )
10		fnopfvb 6237	. . . 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 ) )
11	7, 9, 10	sylancr 695	. . 3 |- ( ( x e. R /\ y e. S ) -> ( ( F ` <. x , y >. ) = z <-> <. <. x , y >. , z >. e. F ) )
12	5	eleq2i 2693	. . . . 5 |- ( <. <. x , y >. , z >. e. F <-> <. <. x , y >. , z >. e. { <. <. x , y >. , z >. | ( ( x e. R /\ y e. S ) /\ ph ) } )
13		oprabid 6677	. . . . 5 |- ( <. <. x , y >. , z >. e. { <. <. x , y >. , z >. | ( ( x e. R /\ y e. S ) /\ ph ) } <-> ( ( x e. R /\ y e. S ) /\ ph ) )
14	12, 13	bitri 264	. . . 4 |- ( <. <. x , y >. , z >. e. F <-> ( ( x e. R /\ y e. S ) /\ ph ) )
15	14	baib 944	. . 3 |- ( ( x e. R /\ y e. S ) -> ( <. <. x , y >. , z >. e. F <-> ph ) )
16	11, 15	bitrd 268	. 2 |- ( ( x e. R /\ y e. S ) -> ( ( F ` <. x , y >. ) = z <-> ph ) )
17	2, 16	syl5bb 272	1 |- ( ( x e. R /\ y e. S ) -> ( ( x F y ) = z <-> ph ) )

Syntax hints:   -> wi 4   <-> wb 196   /\ wa 384   = wceq 1483   e. wcel 1990   E!weu 2470   <.cop 4183   {copab 4712   Fn wfn 5883   ` cfv 5888  (class class class)co 6650   {coprab 6651

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pr 4906

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-iota 5851  df-fun 5890  df-fn 5891  df-fv 5896  df-ov 6653  df-oprab 6654

This theorem is referenced by: (None)