Theorem cnvcnvres 5133

Description: The double converse of the restriction of a class. (Contributed by NM, 3-Jun-2007.)

Assertion

Ref	Expression
cnvcnvres	|- `' `' ( A |` B ) = ( `' `' A |` B )

Proof of Theorem cnvcnvres

Step	Hyp	Ref	Expression
1		relres 4974	. . 3 |- Rel ( A |` B )
2		dfrel2 5120	. . 3 |- ( Rel ( A |` B ) <-> `' `' ( A |` B ) = ( A |` B ) )
3	1, 2	mpbi 145	. 2 |- `' `' ( A |` B ) = ( A |` B )
4		rescnvcnv 5132	. 2 |- ( `' `' A |` B ) = ( A |` B )
5	3, 4	eqtr4i 2220	1 |- `' `' ( A |` B ) = ( `' `' A |` B )

Syntax hints:   = wceq 1364   `'ccnv 4662   |` cres 4665   Rel wrel 4668

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 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-14 2170  ax-ext 2178  ax-sep 4151  ax-pow 4207  ax-pr 4242

This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ral 2480  df-rex 2481  df-v 2765  df-un 3161  df-in 3163  df-ss 3170  df-pw 3607  df-sn 3628  df-pr 3629  df-op 3631  df-br 4034  df-opab 4095  df-xp 4669  df-rel 4670  df-cnv 4671  df-res 4675

This theorem is referenced by: (None)