Theorem opelopaba 4991

Description: The law of concretion. Theorem 9.5 of [Quine] p. 61. (Contributed by Mario Carneiro, 19-Dec-2013.)

Hypotheses

Ref	Expression
opelopaba.1	|- A e. _V
opelopaba.2	|- B e. _V
opelopaba.3	|- ( ( x = A /\ y = B ) -> ( ph <-> ps ) )

Assertion

Ref	Expression
opelopaba	|- ( <. A , B >. e. { <. x , y >. | ph } <-> ps )

Distinct variable groups:   x, y, A   x, B, y   ps, x, y

Allowed substitution hints:   ph( x, y)

Proof of Theorem opelopaba

Step	Hyp	Ref	Expression
1		opelopaba.1	. 2 |- A e. _V
2		opelopaba.2	. 2 |- B e. _V
3		opelopaba.3	. . 3 |- ( ( x = A /\ y = B ) -> ( ph <-> ps ) )
4	3	opelopabga 4988	. 2 |- ( ( A e. _V /\ B e. _V ) -> ( <. A , B >. e. { <. x , y >. | ph } <-> ps ) )
5	1, 2, 4	mp2an 708	1 |- ( <. A , B >. e. { <. x , y >. | ph } <-> ps )

Syntax hints:   -> wi 4   <-> wb 196   /\ wa 384   = wceq 1483   e. wcel 1990   _Vcvv 3200   <.cop 4183   {copab 4712

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-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

This theorem is referenced by:  canthwelem  9472  canthwe  9473  bcthlem1  23121  bj-elid  33085  rfovcnvf1od  38298