Theorem eldisjssd 39470

Description: Subclass theorem for disjoint elementhood, deduction version. (Contributed by Peter Mazsa, 28-Sep-2021.)

Hypothesis

Ref	Expression
eldisjssd.1	⊢ (𝜑 → 𝐴 ⊆ 𝐵)

Assertion

Ref	Expression
eldisjssd	⊢ (𝜑 → ( ElDisj 𝐵 → ElDisj 𝐴))

Proof of Theorem eldisjssd

Step	Hyp	Ref	Expression
1		eldisjssd.1	. 2 ⊢ (𝜑 → 𝐴 ⊆ 𝐵)
2		eldisjss 39468	. 2 ⊢ (𝐴 ⊆ 𝐵 → ( ElDisj 𝐵 → ElDisj 𝐴))
3	1, 2	syl 18	1 ⊢ (𝜑 → ( ElDisj 𝐵 → ElDisj 𝐴))

Syntax hints:   → wi 4   ⊆ wss 3906   ElDisj weldisj 38851

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-11 2192  ax-ext 2735  ax-sep 5258  ax-pr 5406

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-sb 2097  df-clab 2742  df-cleq 2755  df-clel 2838  df-ral 3080  df-rex 3090  df-rab 3417  df-v 3457  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-nul 4288  df-if 4489  df-sn 4591  df-pr 4593  df-op 4597  df-br 5111  df-opab 5175  df-id 5558  df-xp 5669  df-rel 5670  df-cnv 5671  df-co 5672  df-dm 5673  df-rn 5674  df-res 5675  df-coss 39131  df-cnvrefrel 39237  df-funALTV 39397  df-disjALTV 39420  df-eldisj 39422

This theorem is referenced by: (None)