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Theorem disjeqd 38844
Description: Equality theorem for disjoints, deduction version. (Contributed by Peter Mazsa, 22-Sep-2021.)
Hypothesis
Ref Expression
disjeqd.1 (𝜑𝐴 = 𝐵)
Assertion
Ref Expression
disjeqd (𝜑 → ( Disj 𝐴 ↔ Disj 𝐵))

Proof of Theorem disjeqd
StepHypRef Expression
1 disjeqd.1 . 2 (𝜑𝐴 = 𝐵)
2 disjeq 38842 . 2 (𝐴 = 𝐵 → ( Disj 𝐴 ↔ Disj 𝐵))
31, 2syl 17 1 (𝜑 → ( Disj 𝐴 ↔ Disj 𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206   = wceq 1541   Disj wdisjALTV 38266
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-11 2162  ax-ext 2705  ax-sep 5238  ax-nul 5248  ax-pr 5374
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-sb 2068  df-clab 2712  df-cleq 2725  df-clel 2808  df-ral 3050  df-rex 3059  df-rab 3398  df-v 3440  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4285  df-if 4477  df-sn 4578  df-pr 4580  df-op 4584  df-br 5096  df-opab 5158  df-id 5516  df-xp 5627  df-rel 5628  df-cnv 5629  df-co 5630  df-dm 5631  df-rn 5632  df-res 5633  df-coss 38523  df-cnvrefrel 38629  df-funALTV 38790  df-disjALTV 38813
This theorem is referenced by:  eldisjeq  38849  eqvrelqseqdisj3  38939
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