Theorem dfrel3 5193

Description: Alternate definition of relation. (Contributed by NM, 14-May-2008.)

Assertion

Ref	Expression
dfrel3	|- ( Rel R <-> ( R |` _V ) = R )

Proof of Theorem dfrel3

Step	Hyp	Ref	Expression
1		dfrel2 5186	. 2 |- ( Rel R <-> `' `' R = R )
2		cnvcnv2 5189	. . 3 |- `' `' R = ( R |` _V )
3	2	eqeq1i 2238	. 2 |- ( `' `' R = R <-> ( R |` _V ) = R )
4	1, 3	bitri 184	1 |- ( Rel R <-> ( R |` _V ) = R )

Syntax hints:   <-> wb 105   = wceq 1397   _Vcvv 2801   `'ccnv 4723   |` cres 4726   Rel wrel 4729

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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-14 2204  ax-ext 2212  ax-sep 4206  ax-pow 4263  ax-pr 4298

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1810  df-eu 2081  df-mo 2082  df-clab 2217  df-cleq 2223  df-clel 2226  df-nfc 2362  df-ral 2514  df-rex 2515  df-v 2803  df-un 3203  df-in 3205  df-ss 3212  df-pw 3653  df-sn 3674  df-pr 3675  df-op 3677  df-br 4088  df-opab 4150  df-xp 4730  df-rel 4731  df-cnv 4732  df-res 4736

This theorem is referenced by:  cocnvcnv2  5247  f1ovi  5624