39 citations · 61 across the 3 of their papers we have counts for
3 papers
math.AG2005★ 39 cited
Classification of smooth affine spherical varieties
Friedrich Knop, Bart Van Steirteghem
Let G be a complex reductive group. A normal G-variety X is called spherical if a Borel subgroup of G has a dense orbit in X. Of particular interest are spherical varieties which a…
math.RA2004★ 8 cited
Graded cofinite rings of differential operators
Friedrich Knop
We classify subalgebras of a ring of differential operators which are big in the sense that the extension of associated graded rings is finite. We show that these subalgebras corre…
math.RT2004★ 14 cited
On the Kazhdan-Lusztig basis of a spherical Hecke algebra
Friedrich Knop
Lusztig proved that the Kazhdan-Lusztig basis of a spherical Hecke algebra can be essentially identified with the Weyl characters of the Langlands dual group. We generalize this re…