Geometry of GP—IX. The group SO(2n) and the involution σ

On Tangent Spaces to Schubert Varieties, II

“…[11, Theorem 3.2]), the basis d (cf. [9]) for V K ω d , and the expression for X −β q τ d as a linear combination of the vectors in d as given in [4,5,7], where β ∈ τ R + , q τ d 1 ≤ d ≤ l (l being the rank of G) is the extremal weight vector in V K ω d of weight τ ω d .…”