Theorem eqvrel1cossidres

Description: The cosets by a restricted identity relation is an equivalence relation. (Contributed by Peter Mazsa, 31-Dec-2021)

	Ref	Expression
Assertion	eqvrel1cossidres	⊢ EqvRel ≀ ( I ↾ 𝐴 )

Proof

Step	Hyp	Ref	Expression
1		disjALTVidres	⊢ Disj ( I ↾ 𝐴 )
2	1	disjimi	⊢ EqvRel ≀ ( I ↾ 𝐴 )