Theorem rpssxr

Description: The positive reals are a subset of the extended reals. (Contributed by Glauco Siliprandi, 5-Feb-2022)

	Ref	Expression
Assertion	rpssxr	|- RR+ C_ RR*

Proof

Step	Hyp	Ref	Expression
1		rpssre	|- RR+ C_ RR
2		ressxr	|- RR C_ RR*
3	1 2	sstri	|- RR+ C_ RR*