On adjoint orbits in nilpotent ideals of a Borel subalgebra

Rupert W. T. Yu

Let $\mathfrak{m}$ be a nilpotent ideal in the Borel subalgebra $\mathfrak{b}$ of a complex finite-dimensional semisimple Lie algebra, and ${\mathfrak{m}}^{\bullet }$ the subset of (a…