Theorem pirp

Description: _pi is a positive real. (Contributed by Glauco Siliprandi, 11-Dec-2019)

	Ref	Expression
Assertion	pirp	$$⊢\mathrm{\pi }\in {ℝ}^{+}$$

Proof

Step	Hyp	Ref	Expression
1		pire	$$⊢\mathrm{\pi }\in ℝ$$
2		pipos	$$⊢0<\mathrm{\pi }$$
3	1 2	elrpii	$$⊢\mathrm{\pi }\in {ℝ}^{+}$$