Theorem brcnvep 38244

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

Assertion

Ref	Expression
brcnvep	⊢ (𝐴 ∈ 𝑉 → (𝐴◡ E 𝐵 ↔ 𝐵 ∈ 𝐴))

Proof of Theorem brcnvep

Step	Hyp	Ref	Expression
1		rele 5770	. . 3 ⊢ Rel E
2	1	relbrcnv 6058	. 2 ⊢ (𝐴◡ E 𝐵 ↔ 𝐵 E 𝐴)
3		epelg 5520	. 2 ⊢ (𝐴 ∈ 𝑉 → (𝐵 E 𝐴 ↔ 𝐵 ∈ 𝐴))
4	2, 3	bitrid 283	1 ⊢ (𝐴 ∈ 𝑉 → (𝐴◡ E 𝐵 ↔ 𝐵 ∈ 𝐴))

Syntax hints:   → wi 4   ↔ wb 206   ∈ wcel 2109   class class class wbr 5092   E cep 5518  ^◡ccnv 5618

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-ext 2701  ax-sep 5235  ax-nul 5245  ax-pr 5371

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-sb 2066  df-clab 2708  df-cleq 2721  df-clel 2803  df-ne 2926  df-ral 3045  df-rex 3054  df-rab 3395  df-v 3438  df-dif 3906  df-un 3908  df-ss 3920  df-nul 4285  df-if 4477  df-sn 4578  df-pr 4580  df-op 4584  df-br 5093  df-opab 5155  df-eprel 5519  df-xp 5625  df-rel 5626  df-cnv 5627

This theorem is referenced by:  brcnvepres  38246  eccnvepres  38258  eleccnvep  38259  cnvepres  38276  brxrncnvep  38349  dmcnvep  38351  rnxrncnvepres  38376  coss2cnvepres  38399  dfcoels  38411  br1cossincnvepres  38431  br1cossxrncnvepres  38433  dfeldisj5  38703