Theorem uzxrd

Description: An upper integer is an extended real. (Contributed by Glauco Siliprandi, 2-Jan-2022)

	Ref	Expression
Hypotheses	uzxrd.1	|- Z = ( ZZ>= ` M )
	uzxrd.2	|- ( ph -> A e. Z )
Assertion	uzxrd	|- ( ph -> A e. RR* )

Proof

Step	Hyp	Ref	Expression
1		uzxrd.1	|- Z = ( ZZ>= ` M )
2		uzxrd.2	|- ( ph -> A e. Z )
3		ressxr	|- RR C_ RR*
4	1 2	uzred	|- ( ph -> A e. RR )
5	3 4	sselid	|- ( ph -> A e. RR* )