Theorem brcnvep 38266

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 5837	. . 3 ⊢ Rel E
2	1	relbrcnv 6125	. 2 ⊢ (𝐴◡ E 𝐵 ↔ 𝐵 E 𝐴)
3		epelg 5585	. 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 2108   class class class wbr 5143   E cep 5583  ^◡ccnv 5684

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 2007  ax-8 2110  ax-9 2118  ax-ext 2708  ax-sep 5296  ax-nul 5306  ax-pr 5432

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1543  df-fal 1553  df-ex 1780  df-sb 2065  df-clab 2715  df-cleq 2729  df-clel 2816  df-ne 2941  df-ral 3062  df-rex 3071  df-rab 3437  df-v 3482  df-dif 3954  df-un 3956  df-ss 3968  df-nul 4334  df-if 4526  df-sn 4627  df-pr 4629  df-op 4633  df-br 5144  df-opab 5206  df-eprel 5584  df-xp 5691  df-rel 5692  df-cnv 5693

This theorem is referenced by:  brcnvepres  38268  eccnvepres  38281  eleccnvep  38282  cnvepres  38299  rnxrncnvepres  38401  coss2cnvepres  38419  dfcoels  38431  br1cossincnvepres  38451  br1cossxrncnvepres  38453  dfeldisj5  38722