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Axiom ax-0id 8115
Description: 0 is an identity element for real addition. Axiom for real and complex numbers, justified by Theorem ax0id 8073.

Proofs should normally use addrid 8292 instead. (New usage is discouraged.) (Contributed by Jim Kingdon, 16-Jan-2020.)

Assertion
Ref Expression
ax-0id (𝐴 ∈ ℂ → (𝐴 + 0) = 𝐴)

Detailed syntax breakdown of Axiom ax-0id
StepHypRef Expression
1 cA . . 3 class 𝐴
2 cc 8005 . . 3 class
31, 2wcel 2200 . 2 wff 𝐴 ∈ ℂ
4 cc0 8007 . . . 4 class 0
5 caddc 8010 . . . 4 class +
61, 4, 5co 6007 . . 3 class (𝐴 + 0)
76, 1wceq 1395 . 2 wff (𝐴 + 0) = 𝐴
83, 7wi 4 1 wff (𝐴 ∈ ℂ → (𝐴 + 0) = 𝐴)
Colors of variables: wff set class
This axiom is referenced by:  addrid  8292
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