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Theorem disjeccnvep 38629
Description: Property of the epsilon relation. (Contributed by Peter Mazsa, 27-Apr-2020.)
Assertion
Ref Expression
disjeccnvep ((𝐴𝑉𝐵𝑊) → (([𝐴] E ∩ [𝐵] E ) = ∅ ↔ (𝐴𝐵) = ∅))

Proof of Theorem disjeccnvep
StepHypRef Expression
1 eccnvep 38627 . . 3 (𝐴𝑉 → [𝐴] E = 𝐴)
2 eccnvep 38627 . . 3 (𝐵𝑊 → [𝐵] E = 𝐵)
31, 2ineqan12d 4163 . 2 ((𝐴𝑉𝐵𝑊) → ([𝐴] E ∩ [𝐵] E ) = (𝐴𝐵))
43eqeq1d 2739 1 ((𝐴𝑉𝐵𝑊) → (([𝐴] E ∩ [𝐵] E ) = ∅ ↔ (𝐴𝐵) = ∅))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206  wa 395   = wceq 1542  wcel 2114  cin 3889  c0 4274   E cep 5525  ccnv 5625  [cec 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 5232  ax-pr 5372
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-ne 2934  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-br 5087  df-opab 5149  df-eprel 5526  df-xp 5632  df-rel 5633  df-cnv 5634  df-dm 5636  df-rn 5637  df-res 5638  df-ima 5639  df-ec 8640
This theorem is referenced by:  disjecxrncnvep  38752
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