Theorem 3rp

Description: 3 is a positive real. (Contributed by Glauco Siliprandi, 11-Dec-2019)

	Ref	Expression
Assertion	3rp	$$⊢3\in {ℝ}^{+}$$

Proof

Step	Hyp	Ref	Expression
1		3re	$$⊢3\in ℝ$$
2		3pos	$$⊢0<3$$
3	1 2	elrpii	$$⊢3\in {ℝ}^{+}$$