Theorem cnvcnvres 5074

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 4919	. . 3 |- Rel ( A |` B )
2		dfrel2 5061	. . 3 |- ( Rel ( A |` B ) <-> `' `' ( A |` B ) = ( A |` B ) )
3	1, 2	mpbi 144	. 2 |- `' `' ( A |` B ) = ( A |` B )
4		rescnvcnv 5073	. 2 |- ( `' `' A |` B ) = ( A |` B )
5	3, 4	eqtr4i 2194	1 |- `' `' ( A |` B ) = ( `' `' A |` B )

Syntax hints:   = wceq 1348   `'ccnv 4610   |` cres 4613   Rel wrel 4616

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-pow 4160  ax-pr 4194

This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ral 2453  df-rex 2454  df-v 2732  df-un 3125  df-in 3127  df-ss 3134  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-br 3990  df-opab 4051  df-xp 4617  df-rel 4618  df-cnv 4619  df-res 4623

This theorem is referenced by: (None)