English
The star map on the Clifford algebra sends the image of a vector m ∈ M under ι to its negative.
Русский
Звезда отображения ι_Q(m) отправляет в -ι_Q(m).
LaTeX
$$star (ι_Q(m)) = -ι_Q(m).$$
Lean4
/-- The coevaluation map is a linear map from a field `K` to a finite-dimensional
vector space `V`. -/
def coevaluation : K →ₗ[K] V ⊗[K] Module.Dual K V :=
let bV := Basis.ofVectorSpace K V
(Basis.singleton Unit K).constr K fun _ => ∑ i : Basis.ofVectorSpaceIndex K V, bV i ⊗ₜ[K] bV.coord i