Theorem times2i

Description: A number times 2. (Contributed by NM, 11-May-2004)

	Ref	Expression
Hypothesis	2timesi.1	⊢ 𝐴 ∈ ℂ
Assertion	times2i	⊢ ( 𝐴 · 2 ) = ( 𝐴 + 𝐴 )

Proof

Step	Hyp	Ref	Expression
1		2timesi.1	⊢ 𝐴 ∈ ℂ
2		times2	⊢ ( 𝐴 ∈ ℂ → ( 𝐴 · 2 ) = ( 𝐴 + 𝐴 ) )
3	1 2	ax-mp	⊢ ( 𝐴 · 2 ) = ( 𝐴 + 𝐴 )