Theorem qex

Description: The set of rational numbers exists. See also qexALT . (Contributed by NM, 30-Jul-2004) (Revised by Mario Carneiro, 17-Nov-2014)

	Ref	Expression
Assertion	qex	$$⊢\mathbb{Q}\in \mathrm{V}$$

Proof

Step	Hyp	Ref	Expression
1		cnex	$$⊢ℂ\in \mathrm{V}$$
2		qsscn	$$⊢\mathbb{Q}\subseteq ℂ$$
3	1 2	ssexi	$$⊢\mathbb{Q}\in \mathrm{V}$$