Theorem rpssre

Description: The positive reals are a subset of the reals. (Contributed by NM, 24-Feb-2008)

	Ref	Expression
Assertion	rpssre	$$⊢{ℝ}^{+}\subseteq ℝ$$

Proof

Step	Hyp	Ref	Expression
1		df-rp	$$⊢{ℝ}^{+}=\left\{x\in ℝ|0<x\right\}$$
2	1	ssrab3	$$⊢{ℝ}^{+}\subseteq ℝ$$