Theorem hvaddlid 31055

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 31035	. . 3 ⊢ 0ℎ ∈ ℋ
2		ax-hvcom 31033	. . 3 ⊢ ((𝐴 ∈ ℋ ∧ 0ℎ ∈ ℋ) → (𝐴 +ℎ 0ℎ) = (0ℎ +ℎ 𝐴))
3	1, 2	mpan2 690	. 2 ⊢ (𝐴 ∈ ℋ → (𝐴 +ℎ 0ℎ) = (0ℎ +ℎ 𝐴))
4		ax-hvaddid 31036	. 2 ⊢ (𝐴 ∈ ℋ → (𝐴 +ℎ 0ℎ) = 𝐴)
5	3, 4	eqtr3d 2782	1 ⊢ (𝐴 ∈ ℋ → (0ℎ +ℎ 𝐴) = 𝐴)

Syntax hints:   → wi 4   = wceq 1537   ∈ wcel 2108  (class class class)co 7448   ℋchba 30951   +_ℎ cva 30952  0_ℎc0v 30956

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1793  ax-4 1807  ax-5 1909  ax-6 1967  ax-7 2007  ax-9 2118  ax-ext 2711  ax-hvcom 31033  ax-hv0cl 31035  ax-hvaddid 31036

This theorem depends on definitions:  df-bi 207  df-an 396  df-ex 1778  df-cleq 2732

This theorem is referenced by:  hv2neg  31060  hvaddlidi  31061  hvaddsub4  31110  hilablo  31192  hilid  31193  shunssi  31400  spanunsni  31611  5oalem2  31687  3oalem2  31695