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Theorem ecelqsi 8707
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 8706 . 2 ((𝑅 ∈ V ∧ 𝐵𝐴) → [𝐵]𝑅 ∈ (𝐴 / 𝑅))
31, 2mpan 690 1 (𝐵𝐴 → [𝐵]𝑅 ∈ (𝐴 / 𝑅))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2113  Vcvv 3440  [cec 8633   / cqs 8634
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-ext 2708  ax-sep 5241  ax-nul 5251  ax-pr 5377  ax-un 7680
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-sb 2068  df-clab 2715  df-cleq 2728  df-clel 2811  df-ral 3052  df-rex 3061  df-rab 3400  df-v 3442  df-dif 3904  df-un 3906  df-in 3908  df-ss 3918  df-nul 4286  df-if 4480  df-sn 4581  df-pr 4583  df-op 4587  df-uni 4864  df-br 5099  df-opab 5161  df-xp 5630  df-rel 5631  df-cnv 5632  df-dm 5634  df-rn 5635  df-res 5636  df-ima 5637  df-ec 8637  df-qs 8641
This theorem is referenced by:  ecopqsi  8708  addsrpr  10986  mulsrpr  10987  0r  10991  1sr  10992  m1r  10993  addclsr  10994  mulclsr  10995  quseccl0  19114  ghmqusnsglem1  19209  ghmquskerlem1  19212  ghmquskerco  19213  ghmqusker  19216  orbsta  19242  frgpeccl  19690  rngqiprngimf  21252  qustgphaus  24067  vitalilem2  25566  vitalilem3  25567  rloccring  33352  rloc0g  33353  rloc1r  33354  rlocf1  33355  fracfld  33390  nsgqusf1olem1  33494  qsidomlem1  33533  qsdrngilem  33575  qsdrngi  33576  qsdrnglem2  33577  zringfrac  33635  pstmfval  34053
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