Theorem brcnvep 34029

Description: The converse of the binary epsilon relation. (Contributed by Peter Mazsa, 30-Jan-2018.)

Assertion

Ref	Expression
brcnvep	|- ( A e. V -> ( A `' _E B <-> B e. A ) )

Proof of Theorem brcnvep

Step	Hyp	Ref	Expression
1		rele 5250	. . 3 |- Rel _E
2	1	relbrcnv 5506	. 2 |- ( A `' _E B <-> B _E A )
3		epelg 5030	. 2 |- ( A e. V -> ( B _E A <-> B e. A ) )
4	2, 3	syl5bb 272	1 |- ( A e. V -> ( A `' _E B <-> B e. A ) )

Syntax hints:   -> wi 4   <-> wb 196   e. wcel 1990   class class class wbr 4653   _E cep 5028   `'ccnv 5113

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  ax-sep 4781  ax-nul 4789  ax-pr 4906

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-br 4654  df-opab 4713  df-eprel 5029  df-xp 5120  df-rel 5121  df-cnv 5122

This theorem is referenced by:  brcnvepres  34033  eccnvepres  34045  eleccnvep  34046  cnvepres  34066