Theorem 2cnd

Description: The number 2 is a complex number, deduction form. (Contributed by David A. Wheeler, 8-Dec-2018)

	Ref	Expression
Assertion	2cnd	$$⊢\phi \to 2\in ℂ$$

Proof

Step	Hyp	Ref	Expression
1		2cn	$$⊢2\in ℂ$$
2	1	a1i	$$⊢\phi \to 2\in ℂ$$