On Whittaker vectors for generalized Gelfand-Graev representations of semisimple Lie groups
On Whittaker vectors for generalized Gelfand-Graev representations of semisimple Lie groups
Let G be a reductive algebraic group over a local (or a finite) field and g its Lie algebra.A regular nilpotent element of g gives canonically a non-degenerate character of a maximal unipotent subgroup..The repre- sentation of G induced rom such a character is called a Gelfand-Graev representation, and it …