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Metamath Proof Explorer

Theorem disjALTVidres

Description: The class of identity relations restricted is disjoint. (Contributed by Peter Mazsa, 28-Jun-2020) (Revised by Peter Mazsa, 27-Sep-2021)

		Ref	Expression
	Assertion	disjALTVidres	$⊢ Disj ({I ↾}_{A})$

Proof

Step	Hyp	Ref	Expression
1		disjALTVid	$⊢ Disj I$
2		disjimres	$⊢ Disj I \to Disj ({I ↾}_{A})$
3	1 2	ax-mp	$⊢ Disj ({I ↾}_{A})$