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Theorem eqvreldisj4 39175
Description: Intersection with the converse epsilon relation restricted to the quotient set of an equivalence relation is disjoint. (Contributed by Peter Mazsa, 30-May-2020.) (Revised by Peter Mazsa, 31-Dec-2021.)
Assertion
Ref Expression
eqvreldisj4 ( EqvRel 𝑅 → Disj (𝑆 ∩ ( E ↾ (𝐵 / 𝑅))))

Proof of Theorem eqvreldisj4
StepHypRef Expression
1 eqvreldisj3 39174 . 2 ( EqvRel 𝑅 → Disj ( E ↾ (𝐵 / 𝑅)))
2 disjimin 39096 . 2 ( Disj ( E ↾ (𝐵 / 𝑅)) → Disj (𝑆 ∩ ( E ↾ (𝐵 / 𝑅))))
31, 2syl 17 1 ( EqvRel 𝑅 → Disj (𝑆 ∩ ( E ↾ (𝐵 / 𝑅))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  cin 3902   E cep 5531  ccnv 5631  cres 5634   / cqs 8644   EqvRel weqvrel 38445   Disj wdisjALTV 38464
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-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-sep 5243  ax-pr 5379
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-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-rmo 3352  df-rab 3402  df-v 3444  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-nul 4288  df-if 4482  df-sn 4583  df-pr 4585  df-op 4589  df-br 5101  df-opab 5163  df-id 5527  df-eprel 5532  df-xp 5638  df-rel 5639  df-cnv 5640  df-co 5641  df-dm 5642  df-rn 5643  df-res 5644  df-ima 5645  df-ec 8647  df-qs 8651  df-coss 38746  df-refrel 38837  df-cnvrefrel 38852  df-symrel 38869  df-trrel 38903  df-eqvrel 38914  df-funALTV 39012  df-disjALTV 39035  df-eldisj 39037
This theorem is referenced by: (None)
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