Theorem brcnvep 36331

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 5726	. . 3 ⊢ Rel E
2	1	relbrcnv 6004	. 2 ⊢ (𝐴◡ E 𝐵 ↔ 𝐵 E 𝐴)
3		epelg 5487	. 2 ⊢ (𝐴 ∈ 𝑉 → (𝐵 E 𝐴 ↔ 𝐵 ∈ 𝐴))
4	2, 3	syl5bb 282	1 ⊢ (𝐴 ∈ 𝑉 → (𝐴◡ E 𝐵 ↔ 𝐵 ∈ 𝐴))

Syntax hints:   → wi 4   ↔ wb 205   ∈ wcel 2108   class class class wbr 5070   E cep 5485  ^◡ccnv 5579

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-ext 2709  ax-sep 5218  ax-nul 5225  ax-pr 5347

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-sb 2069  df-clab 2716  df-cleq 2730  df-clel 2817  df-ne 2943  df-ral 3068  df-rex 3069  df-rab 3072  df-v 3424  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4254  df-if 4457  df-sn 4559  df-pr 4561  df-op 4565  df-br 5071  df-opab 5133  df-eprel 5486  df-xp 5586  df-rel 5587  df-cnv 5588

This theorem is referenced by:  brcnvepres  36333  eccnvepres  36342  eleccnvep  36343  cnvepres  36360  rnxrncnvepres  36453  dfcoels  36480  br1cossincnvepres  36495  br1cossxrncnvepres  36497  dfeldisj5  36759