Theorem hvaddlid 30770

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 30750	. . 3 ⊢ 0ℎ ∈ ℋ
2		ax-hvcom 30748	. . 3 ⊢ ((𝐴 ∈ ℋ ∧ 0ℎ ∈ ℋ) → (𝐴 +ℎ 0ℎ) = (0ℎ +ℎ 𝐴))
3	1, 2	mpan2 688	. 2 ⊢ (𝐴 ∈ ℋ → (𝐴 +ℎ 0ℎ) = (0ℎ +ℎ 𝐴))
4		ax-hvaddid 30751	. 2 ⊢ (𝐴 ∈ ℋ → (𝐴 +ℎ 0ℎ) = 𝐴)
5	3, 4	eqtr3d 2766	1 ⊢ (𝐴 ∈ ℋ → (0ℎ +ℎ 𝐴) = 𝐴)

Syntax hints:   → wi 4   = wceq 1533   ∈ wcel 2098  (class class class)co 7402   ℋchba 30666   +_ℎ cva 30667  0_ℎc0v 30671

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1905  ax-6 1963  ax-7 2003  ax-9 2108  ax-ext 2695  ax-hvcom 30748  ax-hv0cl 30750  ax-hvaddid 30751

This theorem depends on definitions:  df-bi 206  df-an 396  df-ex 1774  df-cleq 2716

This theorem is referenced by:  hv2neg  30775  hvaddlidi  30776  hvaddsub4  30825  hilablo  30907  hilid  30908  shunssi  31115  spanunsni  31326  5oalem2  31402  3oalem2  31410