Users' Mathboxes Mathbox for Peter Mazsa < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  brcnvep Structured version   Visualization version   GIF version

Theorem brcnvep 39345
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 5810 . . 3 Rel E
21relbrcnv 6109 . 2 (𝐴◡ E 𝐵 ↔ 𝐵 E 𝐴)
3 epelg 5556 . 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 2146   class class class wbr 5106   E cep 5554  ◡ccnv 5654
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1944  ax-6 2001  ax-7 2042  ax-8 2148  ax-9 2156  ax-ext 2735  ax-sep 5252  ax-pr 5395
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-sb 2101  df-clab 2742  df-cleq 2755  df-clel 2839  df-ne 2960  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-sn 4589  df-pr 4591  df-op 4839  df-br 5107  df-opab 5171  df-eprel 5555  df-xp 5661  df-rel 5662  df-cnv 5663
This theorem is used by:  brcnvepres  39347  eccnvepres  39361  eleccnvep  39362  cnvepres  39379  brxrncnvep  39461  dmcnvep  39463  ecxrncnvep  39484  rnxrncnvepres  39498  dfsucmap3  39538  coss2cnvepres  39583  dfcoels  39595  br1cossincnvepres  39615  br1cossxrncnvepres  39617  dfeldisj5  39888
  Copyright terms: Public domain W3C validator