Theorem addridi

Description: 0 is an additive identity. (Contributed by NM, 23-Nov-1994) (Revised by Scott Fenton, 3-Jan-2013)

	Ref	Expression
Hypothesis	mul.1	$$⊢A\in ℂ$$
Assertion	addridi	$$⊢A+0=A$$

Proof

Step	Hyp	Ref	Expression
1		mul.1	$$⊢A\in ℂ$$
2		addrid	$$⊢A\in ℂ\to A+0=A$$
3	1 2	ax-mp	$$⊢A+0=A$$