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Theorem elec1cnvres 38642
Description: Elementhood in the converse restricted coset of 𝐵. (Contributed by Peter Mazsa, 21-Sep-2018.)
Assertion
Ref Expression
elec1cnvres (𝐵𝑉 → (𝐶 ∈ [𝐵](𝑅𝐴) ↔ (𝐶𝐴𝐶𝑅𝐵)))

Proof of Theorem elec1cnvres
StepHypRef Expression
1 relcnv 6056 . . 3 Rel (𝑅𝐴)
2 relelec 8681 . . 3 (Rel (𝑅𝐴) → (𝐶 ∈ [𝐵](𝑅𝐴) ↔ 𝐵(𝑅𝐴)𝐶))
31, 2ax-mp 5 . 2 (𝐶 ∈ [𝐵](𝑅𝐴) ↔ 𝐵(𝑅𝐴)𝐶)
4 br1cnvres 38641 . 2 (𝐵𝑉 → (𝐵(𝑅𝐴)𝐶 ↔ (𝐶𝐴𝐶𝑅𝐵)))
53, 4bitrid 284 1 (𝐵𝑉 → (𝐶 ∈ [𝐵](𝑅𝐴) ↔ (𝐶𝐴𝐶𝑅𝐵)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 207  wa 396  wcel 2119   class class class wbr 5072  ccnv 5617  cres 5620  Rel wrel 5623  [cec 8631
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-ext 2711  ax-sep 5218  ax-pr 5362
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-sb 2074  df-clab 2718  df-cleq 2731  df-clel 2814  df-ral 3054  df-rex 3064  df-rab 3392  df-v 3433  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4262  df-if 4455  df-sn 4556  df-pr 4558  df-op 4562  df-br 5073  df-opab 5135  df-xp 5624  df-rel 5625  df-cnv 5626  df-dm 5628  df-rn 5629  df-res 5630  df-ima 5631  df-ec 8635
This theorem is referenced by:  ec1cnvres  38643
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