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Theorem ecelqsi 8709
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 8708 . 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 3430  [cec 8634   / cqs 8635
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 5231  ax-pr 5370  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 3063  df-rab 3391  df-v 3432  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-sn 4569  df-pr 4571  df-op 4575  df-uni 4852  df-br 5087  df-opab 5149  df-xp 5630  df-rel 5631  df-cnv 5632  df-dm 5634  df-rn 5635  df-res 5636  df-ima 5637  df-ec 8638  df-qs 8642
This theorem is referenced by:  ecopqsi  8710  addsrpr  10989  mulsrpr  10990  0r  10994  1sr  10995  m1r  10996  addclsr  10997  mulclsr  10998  quseccl0  19151  ghmqusnsglem1  19246  ghmquskerlem1  19249  ghmquskerco  19250  ghmqusker  19253  orbsta  19279  frgpeccl  19727  rngqiprngimf  21287  qustgphaus  24098  vitalilem2  25586  vitalilem3  25587  rloccring  33346  rloc0g  33347  rloc1r  33348  rlocf1  33349  fracfld  33384  nsgqusf1olem1  33488  qsidomlem1  33527  qsdrngilem  33569  qsdrngi  33570  qsdrnglem2  33571  zringfrac  33629  pstmfval  34056
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