Theorem 2pire

Description: ( 2 x. _pi ) is a real number. (Contributed by Umit Teoman Dogan, 10-Jun-2026)

	Ref	Expression
Assertion	2pire	$$⊢2\mathrm{\pi }\in ℝ$$

Proof

Step	Hyp	Ref	Expression
1		2re	$$⊢2\in ℝ$$
2		pire	$$⊢\mathrm{\pi }\in ℝ$$
3	1 2	remulcli	$$⊢2\mathrm{\pi }\in ℝ$$