Theorem addlid 8472

Description: 0 is a left identity for addition. (Contributed by Scott Fenton, 3-Jan-2013.)

Assertion

Ref	Expression
addlid	⊢ (𝐴 ∈ ℂ → (0 + 𝐴) = 𝐴)

Proof of Theorem addlid

Step	Hyp	Ref	Expression
1		0cn 8324	. . 3 ⊢ 0 ∈ ℂ
2		addcom 8470	. . 3 ⊢ ((𝐴 ∈ ℂ ∧ 0 ∈ ℂ) → (𝐴 + 0) = (0 + 𝐴))
3	1, 2	mpan2 429	. 2 ⊢ (𝐴 ∈ ℂ → (𝐴 + 0) = (0 + 𝐴))
4		addrid 8471	. 2 ⊢ (𝐴 ∈ ℂ → (𝐴 + 0) = 𝐴)
5	3, 4	eqtr3d 2273	1 ⊢ (𝐴 ∈ ℂ → (0 + 𝐴) = 𝐴)

This proof depends on syntax axioms:   → wi 4   = wceq 1402   ∈ wcel 2209  (class class class)co 6088  ℂcc 8183  0cc0 8185   + caddc 8188

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1500  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-4 1563  ax-17 1579  ax-ial 1587  ax-ext 2220  ax-1cn 8278  ax-icn 8280  ax-addcl 8281  ax-mulcl 8283  ax-addcom 8285  ax-i2m1 8290  ax-0id 8293

This proof depends on definitions:  df-bi 117  df-cleq 2231  df-clel 2234

This theorem is used by:  readdcan  8473  addlidi  8476  addlidd  8483  cnegexlem1  8508  cnegexlem2  8509  addcan  8513  negneg  8583  fz0to4untppr  10547  fzo0addel  10622  fzoaddel2  10624  divfl0  10751  modqid  10806  swrdspsleq  11460  swrds1  11461  sumrbdclem  12168  summodclem2a  12172  fisum0diag2  12238  eftlub  12481  gcdid  12787  cncrng  15014  ptolemy  16068