Theorem errn 6151

Description: The range and domain of an equivalence relation are equal. (Contributed by Rodolfo Medina, 11-Oct-2010.) (Revised by Mario Carneiro, 12-Aug-2015.)

Assertion

Ref	Expression
errn	|- ( R Er A -> ran R = A )

Proof of Theorem errn

Step	Hyp	Ref	Expression
1		df-rn 4374	. 2 |- ran R = dom `' R
2		ercnv 6150	. . . 4 |- ( R Er A -> `' R = R )
3	2	dmeqd 4555	. . 3 |- ( R Er A -> dom `' R = dom R )
4		erdm 6139	. . 3 |- ( R Er A -> dom R = A )
5	3, 4	eqtrd 2113	. 2 |- ( R Er A -> dom `' R = A )
6	1, 5	syl5eq 2125	1 |- ( R Er A -> ran R = A )

Syntax hints:   -> wi 4   = wceq 1284   `'ccnv 4362   dom cdm 4363   ran crn 4364   Er wer 6126

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-io 662  ax-5 1376  ax-7 1377  ax-gen 1378  ax-ie1 1422  ax-ie2 1423  ax-8 1435  ax-10 1436  ax-11 1437  ax-i12 1438  ax-bndl 1439  ax-4 1440  ax-14 1445  ax-17 1459  ax-i9 1463  ax-ial 1467  ax-i5r 1468  ax-ext 2063  ax-sep 3896  ax-pow 3948  ax-pr 3964

This theorem depends on definitions:  df-bi 115  df-3an 921  df-tru 1287  df-nf 1390  df-sb 1686  df-eu 1944  df-mo 1945  df-clab 2068  df-cleq 2074  df-clel 2077  df-nfc 2208  df-ral 2353  df-rex 2354  df-v 2603  df-un 2977  df-in 2979  df-ss 2986  df-pw 3384  df-sn 3404  df-pr 3405  df-op 3407  df-br 3786  df-opab 3840  df-xp 4369  df-rel 4370  df-cnv 4371  df-dm 4373  df-rn 4374  df-er 6129

This theorem is referenced by:  erssxp  6152  ecss  6170  uniqs2  6189