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math.RT2003
Normality of very even nilpotent varieties in D_2l
Eric Sommers
For the classical groups, Kraft and Procesi have resolved the question of which nilpotent orbits have closures which are normal and which are not, with the exception of the very ev…
math.RT2003★ 16 cited
B-stable ideals in the nilradical of a Borel subalgebra
Eric Sommers
We count the number of strictly positive -stable ideals in the nilradical of a Borel subalgebra and prove that the minimal roots of any -stable ideal are conjugate by an elem…