E. Sommers

activity

20012004

most citedB-stable ideals in the nilradical of a Borel subalgebra

16 citations · 27 across the 4 of their papers we have counts for

collaborators

Showing 2002 · math.RTShow all

3 papers · 2 filters

math.RT2002

A characterization of Dynkin elements

Paul E. Gunnells, Eric Sommers

We give a characterization of the Dynkin elements of a simple Lie algebra. Namely, we prove that one-half of a Dynkin element is the unique point of minimal length in its N-region.…

math.RT2002

Normality of nilpotent varieties in $E_{6}$

Eric Sommers

We determine which nilpotent orbits in $E_{6}$ have normal closure and which do not. We also verify a conjecture about small representations in rings of functions on nilpotent orbit…

math.RT2002

Component groups of unipotent centralizers in good characteristic

George J. McNinch, Eric Sommers

Let G be a connected, reductive group over an algebraically closed field of good characteristic. For u in G unipotent, we describe the conjugacy classes in the component group A(u)…

A characterization of Dynkin elements

Normality of nilpotent varieties in E6​

Component groups of unipotent centralizers in good characteristic

Normality of nilpotent varieties in $E_{6}$