39 citations · 96 across the 13 of their papers we have counts for
19 papers
Extensions of simple modules for quantum groups at complex roots of
Henning Haahr Andersen
Let be the quantum group corresponding to a complex simple Lie algebra with root system . Assume the quantum parameter $q\in \C$ is a root of unity. In this…
Character formulas in Category
Henning Haahr Andersen
Let denote the characteristic version of the ordinary category for a semisimple complex Lie algebra. In this paper we give some (formal) character…
Representation Theory via Cohomology of Line Bundles
Henning Haahr Andersen
Let G be a reductive algebraic group over a field k and let B be a Borel subgroup in G. We demonstrate how a number of results on the cohomology of line bundles on the flag manifol…
BGG categories in prime characteristics
Henning Haahr Andersen
Let be a simple complex Lie algebra. In this paper we study the BGG category for the quantum group with being a root of unity in…
Tilting modules and cellular categories
Henning Haahr Andersen
In this paper we study categories of tilting modules. Our starting point is the tilting modules for a reductive algebraic group G in positive characteristic. Here we extend the mai…
-filtrations of dual Weyl modules
Henning Haahr Andersen
Let be a semisimple algebraic group over a field of characteristic . We prove that the dual Weyl modules for all have -filtrations when is not too small. More…