Theorem opabex3d 6323

Description: Existence of an ordered pair abstraction, deduction version. (Contributed by Alexander van der Vekens, 19-Oct-2017.)

Hypotheses

Ref	Expression
opabex3d.1	|- ( ph -> A e. _V )
opabex3d.2	|- ( ( ph /\ x e. A ) -> { y | ps } e. _V )

Assertion

Ref	Expression
opabex3d	|- ( ph -> { <. x , y >. | ( x e. A /\ ps ) } e. _V )

Distinct variable groups:   x, A, y   ph, x

Allowed substitution hints:   ph( y)   ps( x, y)

Proof of Theorem opabex3d

Dummy variables v w z are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		19.42v 1958	. . . . . 6 |- ( E. y ( x e. A /\ ( z = <. x , y >. /\ ps ) ) <-> ( x e. A /\ E. y ( z = <. x , y >. /\ ps ) ) )
2		an12 563	. . . . . . 7 |- ( ( z = <. x , y >. /\ ( x e. A /\ ps ) ) <-> ( x e. A /\ ( z = <. x , y >. /\ ps ) ) )
3	2	exbii 1654	. . . . . 6 |- ( E. y ( z = <. x , y >. /\ ( x e. A /\ ps ) ) <-> E. y ( x e. A /\ ( z = <. x , y >. /\ ps ) ) )
4		elxp 4771	. . . . . . . 8 |- ( z e. ( { x } X. { y | ps } ) <-> E. v E. w ( z = <. v , w >. /\ ( v e. { x } /\ w e. { y | ps } ) ) )
5		excom 1712	. . . . . . . . 9 |- ( E. v E. w ( z = <. v , w >. /\ ( v e. { x } /\ w e. { y | ps } ) ) <-> E. w E. v ( z = <. v , w >. /\ ( v e. { x } /\ w e. { y | ps } ) ) )
6		an12 563	. . . . . . . . . . . . 13 |- ( ( z = <. v , w >. /\ ( v e. { x } /\ w e. { y | ps } ) ) <-> ( v e. { x } /\ ( z = <. v , w >. /\ w e. { y | ps } ) ) )
7		velsn 3711	. . . . . . . . . . . . . 14 |- ( v e. { x } <-> v = x )
8	7	anbi1i 458	. . . . . . . . . . . . 13 |- ( ( v e. { x } /\ ( z = <. v , w >. /\ w e. { y | ps } ) ) <-> ( v = x /\ ( z = <. v , w >. /\ w e. { y | ps } ) ) )
9	6, 8	bitri 184	. . . . . . . . . . . 12 |- ( ( z = <. v , w >. /\ ( v e. { x } /\ w e. { y | ps } ) ) <-> ( v = x /\ ( z = <. v , w >. /\ w e. { y | ps } ) ) )
10	9	exbii 1654	. . . . . . . . . . 11 |- ( E. v ( z = <. v , w >. /\ ( v e. { x } /\ w e. { y | ps } ) ) <-> E. v ( v = x /\ ( z = <. v , w >. /\ w e. { y | ps } ) ) )
11		vex 2818	. . . . . . . . . . . 12 |- x e. _V
12		opeq1 3888	. . . . . . . . . . . . . 14 |- ( v = x -> <. v , w >. = <. x , w >. )
13	12	eqeq2d 2246	. . . . . . . . . . . . 13 |- ( v = x -> ( z = <. v , w >. <-> z = <. x , w >. ) )
14	13	anbi1d 465	. . . . . . . . . . . 12 |- ( v = x -> ( ( z = <. v , w >. /\ w e. { y | ps } ) <-> ( z = <. x , w >. /\ w e. { y | ps } ) ) )
15	11, 14	ceqsexv 2855	. . . . . . . . . . 11 |- ( E. v ( v = x /\ ( z = <. v , w >. /\ w e. { y | ps } ) ) <-> ( z = <. x , w >. /\ w e. { y | ps } ) )
16	10, 15	bitri 184	. . . . . . . . . 10 |- ( E. v ( z = <. v , w >. /\ ( v e. { x } /\ w e. { y | ps } ) ) <-> ( z = <. x , w >. /\ w e. { y | ps } ) )
17	16	exbii 1654	. . . . . . . . 9 |- ( E. w E. v ( z = <. v , w >. /\ ( v e. { x } /\ w e. { y | ps } ) ) <-> E. w ( z = <. x , w >. /\ w e. { y | ps } ) )
18	5, 17	bitri 184	. . . . . . . 8 |- ( E. v E. w ( z = <. v , w >. /\ ( v e. { x } /\ w e. { y | ps } ) ) <-> E. w ( z = <. x , w >. /\ w e. { y | ps } ) )
19		nfv 1577	. . . . . . . . . 10 |- F/ y z = <. x , w >.
20		nfsab1 2224	. . . . . . . . . 10 |- F/ y w e. { y | ps }
21	19, 20	nfan 1614	. . . . . . . . 9 |- F/ y ( z = <. x , w >. /\ w e. { y | ps } )
22		nfv 1577	. . . . . . . . 9 |- F/ w ( z = <. x , y >. /\ ps )
23		opeq2 3889	. . . . . . . . . . 11 |- ( w = y -> <. x , w >. = <. x , y >. )
24	23	eqeq2d 2246	. . . . . . . . . 10 |- ( w = y -> ( z = <. x , w >. <-> z = <. x , y >. ) )
25		df-clab 2221	. . . . . . . . . . 11 |- ( w e. { y | ps } <-> [ w / y ] ps )
26		sbequ12 1820	. . . . . . . . . . . 12 |- ( y = w -> ( ps <-> [ w / y ] ps ) )
27	26	equcoms 1756	. . . . . . . . . . 11 |- ( w = y -> ( ps <-> [ w / y ] ps ) )
28	25, 27	bitr4id 199	. . . . . . . . . 10 |- ( w = y -> ( w e. { y | ps } <-> ps ) )
29	24, 28	anbi12d 473	. . . . . . . . 9 |- ( w = y -> ( ( z = <. x , w >. /\ w e. { y | ps } ) <-> ( z = <. x , y >. /\ ps ) ) )
30	21, 22, 29	cbvex 1805	. . . . . . . 8 |- ( E. w ( z = <. x , w >. /\ w e. { y | ps } ) <-> E. y ( z = <. x , y >. /\ ps ) )
31	4, 18, 30	3bitri 206	. . . . . . 7 |- ( z e. ( { x } X. { y | ps } ) <-> E. y ( z = <. x , y >. /\ ps ) )
32	31	anbi2i 457	. . . . . 6 |- ( ( x e. A /\ z e. ( { x } X. { y | ps } ) ) <-> ( x e. A /\ E. y ( z = <. x , y >. /\ ps ) ) )
33	1, 3, 32	3bitr4ri 213	. . . . 5 |- ( ( x e. A /\ z e. ( { x } X. { y | ps } ) ) <-> E. y ( z = <. x , y >. /\ ( x e. A /\ ps ) ) )
34	33	exbii 1654	. . . 4 |- ( E. x ( x e. A /\ z e. ( { x } X. { y | ps } ) ) <-> E. x E. y ( z = <. x , y >. /\ ( x e. A /\ ps ) ) )
35		eliun 4000	. . . . 5 |- ( z e. U_ x e. A ( { x } X. { y | ps } ) <-> E. x e. A z e. ( { x } X. { y | ps } ) )
36		df-rex 2528	. . . . 5 |- ( E. x e. A z e. ( { x } X. { y | ps } ) <-> E. x ( x e. A /\ z e. ( { x } X. { y | ps } ) ) )
37	35, 36	bitri 184	. . . 4 |- ( z e. U_ x e. A ( { x } X. { y | ps } ) <-> E. x ( x e. A /\ z e. ( { x } X. { y | ps } ) ) )
38		elopab 4381	. . . 4 |- ( z e. { <. x , y >. | ( x e. A /\ ps ) } <-> E. x E. y ( z = <. x , y >. /\ ( x e. A /\ ps ) ) )
39	34, 37, 38	3bitr4i 212	. . 3 |- ( z e. U_ x e. A ( { x } X. { y | ps } ) <-> z e. { <. x , y >. | ( x e. A /\ ps ) } )
40	39	eqriv 2231	. 2 |- U_ x e. A ( { x } X. { y | ps } ) = { <. x , y >. | ( x e. A /\ ps ) }
41		opabex3d.1	. . 3 |- ( ph -> A e. _V )
42		snexg 4302	. . . . . 6 |- ( x e. _V -> { x } e. _V )
43	11, 42	ax-mp 5	. . . . 5 |- { x } e. _V
44		opabex3d.2	. . . . 5 |- ( ( ph /\ x e. A ) -> { y | ps } e. _V )
45		xpexg 4869	. . . . 5 |- ( ( { x } e. _V /\ { y | ps } e. _V ) -> ( { x } X. { y | ps } ) e. _V )
46	43, 44, 45	sylancr 414	. . . 4 |- ( ( ph /\ x e. A ) -> ( { x } X. { y | ps } ) e. _V )
47	46	ralrimiva 2617	. . 3 |- ( ph -> A. x e. A ( { x } X. { y | ps } ) e. _V )
48		iunexg 6321	. . 3 |- ( ( A e. _V /\ A. x e. A ( { x } X. { y | ps } ) e. _V ) -> U_ x e. A ( { x } X. { y | ps } ) e. _V )
49	41, 47, 48	syl2anc 411	. 2 |- ( ph -> U_ x e. A ( { x } X. { y | ps } ) e. _V )
50	40, 49	eqeltrrid 2322	1 |- ( ph -> { <. x , y >. | ( x e. A /\ ps ) } e. _V )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1398   E.wex 1541   [wsb 1811   e. wcel 2205   {cab 2220   A.wral 2522   E.wrex 2523   _Vcvv 2815   {csn 3694   <.cop 3697   U_ciun 3996   {copab 4175   X. cxp 4752

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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-coll 4230  ax-sep 4233  ax-pow 4292  ax-pr 4327  ax-un 4559

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3046  df-csb 3142  df-un 3218  df-in 3220  df-ss 3227  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-iun 3998  df-br 4115  df-opab 4177  df-mpt 4178  df-id 4419  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-ima 4767  df-iota 5317  df-fun 5359  df-fn 5360  df-f 5361  df-f1 5362  df-fo 5363  df-f1o 5364  df-fv 5365

This theorem is referenced by:  acfun  7527  ccfunen  7594  ovshftex  11529  wksfval  16443  wlkex  16446