Theorem hvaddid2 29286

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

Assertion

Ref	Expression
hvaddid2	⊢ (𝐴 ∈ ℋ → (0ℎ +ℎ 𝐴) = 𝐴)

Proof of Theorem hvaddid2

Step	Hyp	Ref	Expression
1		ax-hv0cl 29266	. . 3 ⊢ 0ℎ ∈ ℋ
2		ax-hvcom 29264	. . 3 ⊢ ((𝐴 ∈ ℋ ∧ 0ℎ ∈ ℋ) → (𝐴 +ℎ 0ℎ) = (0ℎ +ℎ 𝐴))
3	1, 2	mpan2 687	. 2 ⊢ (𝐴 ∈ ℋ → (𝐴 +ℎ 0ℎ) = (0ℎ +ℎ 𝐴))
4		ax-hvaddid 29267	. 2 ⊢ (𝐴 ∈ ℋ → (𝐴 +ℎ 0ℎ) = 𝐴)
5	3, 4	eqtr3d 2780	1 ⊢ (𝐴 ∈ ℋ → (0ℎ +ℎ 𝐴) = 𝐴)

Syntax hints:   → wi 4   = wceq 1539   ∈ wcel 2108  (class class class)co 7255   ℋchba 29182   +_ℎ cva 29183  0_ℎc0v 29187

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-9 2118  ax-ext 2709  ax-hvcom 29264  ax-hv0cl 29266  ax-hvaddid 29267

This theorem depends on definitions:  df-bi 206  df-an 396  df-ex 1784  df-cleq 2730

This theorem is referenced by:  hv2neg  29291  hvaddid2i  29292  hvaddsub4  29341  hilablo  29423  hilid  29424  shunssi  29631  spanunsni  29842  5oalem2  29918  3oalem2  29926