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Theorem disjeccnvep 38267
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 38265 . . 3 (𝐴𝑉 → [𝐴] E = 𝐴)
2 eccnvep 38265 . . 3 (𝐵𝑊 → [𝐵] E = 𝐵)
31, 2ineqan12d 4187 . 2 ((𝐴𝑉𝐵𝑊) → ([𝐴] E ∩ [𝐵] E ) = (𝐴𝐵))
43eqeq1d 2732 1 ((𝐴𝑉𝐵𝑊) → (([𝐴] E ∩ [𝐵] E ) = ∅ ↔ (𝐴𝐵) = ∅))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206  wa 395   = wceq 1540  wcel 2109  cin 3915  c0 4298   E cep 5539  ccnv 5639  [cec 8671
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2702  ax-sep 5253  ax-nul 5263  ax-pr 5389
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-clab 2709  df-cleq 2722  df-clel 2804  df-ne 2927  df-ral 3046  df-rex 3055  df-rab 3409  df-v 3452  df-dif 3919  df-un 3921  df-in 3923  df-ss 3933  df-nul 4299  df-if 4491  df-sn 4592  df-pr 4594  df-op 4598  df-br 5110  df-opab 5172  df-eprel 5540  df-xp 5646  df-rel 5647  df-cnv 5648  df-dm 5650  df-rn 5651  df-res 5652  df-ima 5653  df-ec 8675
This theorem is referenced by:  disjecxrncnvep  38371
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