ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  ax-addcom GIF version

Axiom ax-addcom 7874
Description: Addition commutes. Axiom for real and complex numbers, justified by Theorem axaddcom 7832. Proofs should normally use addcom 8056 instead. (New usage is discouraged.) (Contributed by Jim Kingdon, 17-Jan-2020.)
Assertion
Ref Expression
ax-addcom ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 𝐵) = (𝐵 + 𝐴))

Detailed syntax breakdown of Axiom ax-addcom
StepHypRef Expression
1 cA . . . 4 class 𝐴
2 cc 7772 . . . 4 class
31, 2wcel 2141 . . 3 wff 𝐴 ∈ ℂ
4 cB . . . 4 class 𝐵
54, 2wcel 2141 . . 3 wff 𝐵 ∈ ℂ
63, 5wa 103 . 2 wff (𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ)
7 caddc 7777 . . . 4 class +
81, 4, 7co 5853 . . 3 class (𝐴 + 𝐵)
94, 1, 7co 5853 . . 3 class (𝐵 + 𝐴)
108, 9wceq 1348 . 2 wff (𝐴 + 𝐵) = (𝐵 + 𝐴)
116, 10wi 4 1 wff ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 𝐵) = (𝐵 + 𝐴))
Colors of variables: wff set class
This axiom is referenced by:  addcom  8056
  Copyright terms: Public domain W3C validator