Theorem unveldom

Description: The universe is an element of the domain of the probability, the universe (entire probability space) being U. dom P in our construction. (Contributed by Thierry Arnoux, 22-Jan-2017)

	Ref	Expression
Assertion	unveldom	|- ( P e. Prob -> U. dom P e. dom P )

Proof

Step	Hyp	Ref	Expression
1		id	|- ( P e. Prob -> P e. Prob )
2	1	unveldomd	|- ( P e. Prob -> U. dom P e. dom P )