Title of article
Richardson orbits for real classical groups
Author/Authors
Peter E. Trapa، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
25
From page
361
To page
385
Abstract
For classical real Lie groups, we compute the annihilators and associated varieties of the derived functor modules cohomologically induced from the trivial representation. (Generalizing the standard terminology for complex groups, the nilpotent orbits that arise as such associated varieties are called Richardson orbits.) We show that every complex special orbit has a real form which is Richardson. As a consequence of the annihilator calculations, we give many new infinite families of simple highest weight modules with irreducible associated varieties. Finally we sketch the analogous computations for singular derived functor modules in the weakly fair range and, as an application, outline a method to detect non-normality of complex nilpotent orbit closures.
Journal title
Journal of Algebra
Serial Year
2005
Journal title
Journal of Algebra
Record number
697109
Link To Document