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Metamath Proof Explorer

Theorem pirp

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

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

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