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Theorem ecelqsi 8746
Description: Membership of an equivalence class in a quotient set. (Contributed by NM, 25-Jul-1995.) (Revised by Mario Carneiro, 9-Jul-2014.)
Hypothesis
Ref Expression
ecelqsi.1 𝑅 ∈ V
Assertion
Ref Expression
ecelqsi (𝐵𝐴 → [𝐵]𝑅 ∈ (𝐴 / 𝑅))

Proof of Theorem ecelqsi
StepHypRef Expression
1 ecelqsi.1 . 2 𝑅 ∈ V
2 ecelqsw 8745 . 2 ((𝑅 ∈ V ∧ 𝐵𝐴) → [𝐵]𝑅 ∈ (𝐴 / 𝑅))
31, 2mpan 700 1 (𝐵𝐴 → [𝐵]𝑅 ∈ (𝐴 / 𝑅))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2141  Vcvv 3453  [cec 8671   / cqs 8672
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-ext 2733  ax-sep 5245  ax-pr 5389  ax-un 7714
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-sb 2090  df-clab 2740  df-cleq 2753  df-clel 2836  df-ral 3076  df-rex 3086  df-rab 3414  df-v 3455  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-nul 4286  df-if 4480  df-sn 4582  df-pr 4584  df-op 4588  df-uni 4865  df-br 5100  df-opab 5162  df-xp 5651  df-rel 5652  df-cnv 5653  df-dm 5655  df-rn 5656  df-res 5657  df-ima 5658  df-ec 8675  df-qs 8679
This theorem is referenced by:  ecopqsi  8747  addsrpr  11030  mulsrpr  11031  0r  11035  1sr  11036  m1r  11037  addclsr  11038  mulclsr  11039  quseccl0  19209  ghmqusnsglem1  19303  ghmquskerlem1  19306  ghmquskerco  19307  ghmqusker  19310  orbsta  19336  frgpeccl  19784  rngqiprngimf  21347  qustgphaus  24163  vitalilem2  25651  vitalilem3  25652  rloccring  33413  rloc0g  33414  rloc1r  33415  rlocf1  33416  rlocinvunit  33417  rlocisunit  33418  fracfld  33456  nsgqusf1olem1  33560  qsidomlem1  33600  qsdrngilem  33643  qsdrngi  33644  qsdrnglem2  33645  zringfrac  33711  pstmfval  34154
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