Theorem salunid

Description: A set is an element of any sigma-algebra on it . (Contributed by Glauco Siliprandi, 26-Jun-2021)

	Ref	Expression
Hypothesis	salunid.1	|- ( ph -> S e. SAlg )
Assertion	salunid	|- ( ph -> U. S e. S )

Proof

Step	Hyp	Ref	Expression
1		salunid.1	|- ( ph -> S e. SAlg )
2		saluni	|- ( S e. SAlg -> U. S e. S )
3	1 2	syl	|- ( ph -> U. S e. S )