Theorem hvaddlid 31009

Description: Addition with the zero vector. (Contributed by NM, 18-Oct-1999.) (New usage is discouraged.)

Assertion

Ref	Expression
hvaddlid	⊢ (𝐴 ∈ ℋ → (0ℎ +ℎ 𝐴) = 𝐴)

Proof of Theorem hvaddlid

Step	Hyp	Ref	Expression
1		ax-hv0cl 30989	. . 3 ⊢ 0ℎ ∈ ℋ
2		ax-hvcom 30987	. . 3 ⊢ ((𝐴 ∈ ℋ ∧ 0ℎ ∈ ℋ) → (𝐴 +ℎ 0ℎ) = (0ℎ +ℎ 𝐴))
3	1, 2	mpan2 691	. 2 ⊢ (𝐴 ∈ ℋ → (𝐴 +ℎ 0ℎ) = (0ℎ +ℎ 𝐴))
4		ax-hvaddid 30990	. 2 ⊢ (𝐴 ∈ ℋ → (𝐴 +ℎ 0ℎ) = 𝐴)
5	3, 4	eqtr3d 2773	1 ⊢ (𝐴 ∈ ℋ → (0ℎ +ℎ 𝐴) = 𝐴)

Syntax hints:   → wi 4   = wceq 1540   ∈ wcel 2109  (class class class)co 7410   ℋchba 30905   +_ℎ cva 30906  0_ℎc0v 30910

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-9 2119  ax-ext 2708  ax-hvcom 30987  ax-hv0cl 30989  ax-hvaddid 30990

This theorem depends on definitions:  df-bi 207  df-an 396  df-ex 1780  df-cleq 2728

This theorem is referenced by:  hv2neg  31014  hvaddlidi  31015  hvaddsub4  31064  hilablo  31146  hilid  31147  shunssi  31354  spanunsni  31565  5oalem2  31641  3oalem2  31649