Theorem eqrelrdv 5216

Description: Deduce equality of relations from equivalence of membership. (Contributed by Rodolfo Medina, 10-Oct-2010.)

Hypotheses

Ref	Expression
eqrelrdv.1	|- Rel A
eqrelrdv.2	|- Rel B
eqrelrdv.3	|- ( ph -> ( <. x , y >. e. A <-> <. x , y >. e. B ) )

Assertion

Ref	Expression
eqrelrdv	|- ( ph -> A = B )

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

Proof of Theorem eqrelrdv

Step	Hyp	Ref	Expression
1		eqrelrdv.3	. . 3 |- ( ph -> ( <. x , y >. e. A <-> <. x , y >. e. B ) )
2	1	alrimivv 1856	. 2 |- ( ph -> A. x A. y ( <. x , y >. e. A <-> <. x , y >. e. B ) )
3		eqrelrdv.1	. . 3 |- Rel A
4		eqrelrdv.2	. . 3 |- Rel B
5		eqrel 5209	. . 3 |- ( ( Rel A /\ Rel B ) -> ( A = B <-> A. x A. y ( <. x , y >. e. A <-> <. x , y >. e. B ) ) )
6	3, 4, 5	mp2an 708	. 2 |- ( A = B <-> A. x A. y ( <. x , y >. e. A <-> <. x , y >. e. B ) )
7	2, 6	sylibr 224	1 |- ( ph -> A = B )

Syntax hints:   -> wi 4   <-> wb 196   A.wal 1481   = wceq 1483   e. wcel 1990   <.cop 4183   Rel wrel 5119

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

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-clab 2609  df-cleq 2615  df-clel 2618  df-in 3581  df-ss 3588  df-opab 4713  df-xp 5120  df-rel 5121

This theorem is referenced by:  eqbrrdiv  5218  fcnvres  6082  fmptco  6396  fpwwe2lem8  9459  fpwwe2lem12  9463  fsumcom2  14505  fsumcom2OLD  14506  fprodcom2  14714  fprodcom2OLD  14715  gsumcom2  18374  lgsquadlem1  25105  lgsquadlem2  25106  fmptcof2  29457  dfcnv2  29476  dih1dimatlem  36618