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Theorem ecelqsi 8710
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 8709 . 2 ((𝑅 ∈ V ∧ 𝐵𝐴) → [𝐵]𝑅 ∈ (𝐴 / 𝑅))
31, 2mpan 691 1 (𝐵𝐴 → [𝐵]𝑅 ∈ (𝐴 / 𝑅))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2114  Vcvv 3441  [cec 8635   / cqs 8636
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-ext 2709  ax-sep 5242  ax-nul 5252  ax-pr 5378  ax-un 7682
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  df-ral 3053  df-rex 3062  df-rab 3401  df-v 3443  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-nul 4287  df-if 4481  df-sn 4582  df-pr 4584  df-op 4588  df-uni 4865  df-br 5100  df-opab 5162  df-xp 5631  df-rel 5632  df-cnv 5633  df-dm 5635  df-rn 5636  df-res 5637  df-ima 5638  df-ec 8639  df-qs 8643
This theorem is referenced by:  ecopqsi  8711  addsrpr  10990  mulsrpr  10991  0r  10995  1sr  10996  m1r  10997  addclsr  10998  mulclsr  10999  quseccl0  19118  ghmqusnsglem1  19213  ghmquskerlem1  19216  ghmquskerco  19217  ghmqusker  19220  orbsta  19246  frgpeccl  19694  rngqiprngimf  21256  qustgphaus  24071  vitalilem2  25570  vitalilem3  25571  rloccring  33333  rloc0g  33334  rloc1r  33335  rlocf1  33336  fracfld  33371  nsgqusf1olem1  33475  qsidomlem1  33514  qsdrngilem  33556  qsdrngi  33557  qsdrnglem2  33558  zringfrac  33616  pstmfval  34034
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