Theorem addid1i 8101

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

Hypothesis

Ref	Expression
mul.1	|- A e. CC

Assertion

Ref	Expression
addid1i	|- ( A + 0 ) = A

Proof of Theorem addid1i

Step	Hyp	Ref	Expression
1		mul.1	. 2 |- A e. CC
2		addid1 8097	. 2 |- ( A e. CC -> ( A + 0 ) = A )
3	1, 2	ax-mp 5	1 |- ( A + 0 ) = A

Syntax hints:   = wceq 1353   e. wcel 2148  (class class class)co 5877   CCcc 7811   0cc0 7813   + caddc 7816

This theorem was proved from axioms:  ax-mp 5  ax-0id 7921

This theorem is referenced by:  1p0e1  9037  9p1e10  9388  num0u  9396  numnncl2  9408  decrmanc  9442  decaddi  9445  decaddci  9446  decmul1  9449  decmulnc  9452  fsumrelem  11481  demoivreALT  11783  sinhalfpilem  14297  efipi  14307