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 -> Disj ( _I |` A ) )
3	1 2	ax-mp	|- Disj ( _I |` A )