Theorem zssre

Description: The integers are a subset of the reals. (Contributed by NM, 2-Aug-2004)

	Ref	Expression
Assertion	zssre	$$⊢\mathbb{Z}\subseteq ℝ$$

Proof

Step	Hyp	Ref	Expression
1		zre	$$⊢x\in \mathbb{Z}\to x\in ℝ$$
2	1	ssriv	$$⊢\mathbb{Z}\subseteq ℝ$$