Theorem resopab 5446

Description: Restriction of a class abstraction of ordered pairs. (Contributed by NM, 5-Nov-2002.)

Assertion

Ref	Expression
resopab	|- ( { <. x , y >. | ph } |` A ) = { <. x , y >. | ( x e. A /\ ph ) }

Distinct variable group:   x, y, A

Allowed substitution hints:   ph( x, y)

Proof of Theorem resopab

Step	Hyp	Ref	Expression
1		df-res 5126	. 2 |- ( { <. x , y >. | ph } |` A ) = ( { <. x , y >. | ph } i^i ( A X. _V ) )
2		df-xp 5120	. . . . . 6 |- ( A X. _V ) = { <. x , y >. | ( x e. A /\ y e. _V ) }
3		vex 3203	. . . . . . . 8 |- y e. _V
4	3	biantru 526	. . . . . . 7 |- ( x e. A <-> ( x e. A /\ y e. _V ) )
5	4	opabbii 4717	. . . . . 6 |- { <. x , y >. | x e. A } = { <. x , y >. | ( x e. A /\ y e. _V ) }
6	2, 5	eqtr4i 2647	. . . . 5 |- ( A X. _V ) = { <. x , y >. | x e. A }
7	6	ineq2i 3811	. . . 4 |- ( { <. x , y >. | ph } i^i ( A X. _V ) ) = ( { <. x , y >. | ph } i^i { <. x , y >. | x e. A } )
8		incom 3805	. . . 4 |- ( { <. x , y >. | ph } i^i { <. x , y >. | x e. A } ) = ( { <. x , y >. | x e. A } i^i { <. x , y >. | ph } )
9	7, 8	eqtri 2644	. . 3 |- ( { <. x , y >. | ph } i^i ( A X. _V ) ) = ( { <. x , y >. | x e. A } i^i { <. x , y >. | ph } )
10		inopab 5252	. . 3 |- ( { <. x , y >. | x e. A } i^i { <. x , y >. | ph } ) = { <. x , y >. | ( x e. A /\ ph ) }
11	9, 10	eqtri 2644	. 2 |- ( { <. x , y >. | ph } i^i ( A X. _V ) ) = { <. x , y >. | ( x e. A /\ ph ) }
12	1, 11	eqtri 2644	1 |- ( { <. x , y >. | ph } |` A ) = { <. x , y >. | ( x e. A /\ ph ) }

Syntax hints:   /\ wa 384   = wceq 1483   e. wcel 1990   _Vcvv 3200   i^i cin 3573   {copab 4712   X. cxp 5112   |` cres 5116

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-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-rab 2921  df-v 3202  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-opab 4713  df-xp 5120  df-rel 5121  df-res 5126

This theorem is referenced by:  resopab2  5448  opabresid  5455  mptpreima  5628  isarep2  5978  resoprab  6756  elrnmpt2res  6774  df1st2  7263  df2nd2  7264