Normality of orthogonal and symplectic nilpotent orbit closures in positive characteristic

Singularities of Closures of B-Conjugacy Classes of Nilpotent Elements of Height 2

“…There exists more precise results for classical groups. [13], Mehta -van der Kallen [23], Xiao -Shu [34]). Assume char(k) = p > 0 and let G be reductive of classical type ( i.e.…”