Metamath Proof Explorer


Axiom ax-hvmulid

Description: Scalar multiplication by one. (Contributed by NM, 30-May-1999) (New usage is discouraged.)

Ref Expression
Assertion ax-hvmulid ( 𝐴 ∈ ℋ → ( 1 · 𝐴 ) = 𝐴 )

Detailed syntax breakdown

Step Hyp Ref Expression
0 cA 𝐴
1 chba
2 0 1 wcel 𝐴 ∈ ℋ
3 c1 1
4 csm ·
5 3 0 4 co ( 1 · 𝐴 )
6 5 0 wceq ( 1 · 𝐴 ) = 𝐴
7 2 6 wi ( 𝐴 ∈ ℋ → ( 1 · 𝐴 ) = 𝐴 )