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Theorem brcnvep 39202
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
StepHypRef Expression
1 rele 5805 . . 3 Rel E
21relbrcnv 6103 . 2 (𝐴◡ E 𝐵 ↔ 𝐵 E 𝐴)
3 epelg 5552 . 2 (𝐴 ∈ 𝑉 → (𝐵 E 𝐴 ↔ 𝐵 ∈ 𝐴))
42, 3bitrid 286 1 (𝐴 ∈ 𝑉 → (𝐴◡ E 𝐵 ↔ 𝐵 ∈ 𝐴))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∈ wcel 2145   class class class wbr 5103   E cep 5550  ◡ccnv 5650
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-ext 2733  ax-sep 5249  ax-pr 5391
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2100  df-clab 2740  df-cleq 2753  df-clel 2836  df-ne 2957  df-ral 3078  df-rex 3088  df-rab 3414  df-v 3453  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-br 5104  df-opab 5168  df-eprel 5551  df-xp 5657  df-rel 5658  df-cnv 5659
This theorem is used by:  brcnvepres  39204  eccnvepres  39218  eleccnvep  39219  cnvepres  39236  brxrncnvep  39318  dmcnvep  39320  ecxrncnvep  39341  rnxrncnvepres  39355  dfsucmap3  39395  coss2cnvepres  39440  dfcoels  39452  br1cossincnvepres  39472  br1cossxrncnvepres  39474  dfeldisj5  39745
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