English
Equality of the adE relation with its Lie-algebra expression for Cartan data, matching the general adE construction.
Русский
Согласование adE с его выражением в Ли-алгебре для Картановой матрицы.
LaTeX
$$$CartanMatrix.Relations.adE\\;R\\;A = (\\lambda i j, ad(E_i)^{(-A_{ij}).toNat}([E_i,E_j]))$$$
Lean4
/-- The terms corresponding to the `ad F`-relations.
See also `adE` docstring. -/
def adF : B × B → FreeLieAlgebra R (Generators B) :=
uncurry fun i j => ad (F i) ^ (-A i j).toNat <| ⁅F i, F j⁆