
Marcos Soriano
University of Hannover
A homological interpretation of Schur elements
Friday 12th March, 12:0512:55pm,
Carslaw 373.
We start from a fairly general setup  which for example applies to
the generic IwahoriHecke algebras associated to finite Coxeter
groups. In this talk we derive in a purely ringtheoretical way a
homological characterization of the wellknown Schur elements,
which are usually associated to the irreducible representations of
such an algebra. The Schur elements will arise in this context as the
generators of ideals which are intersections of annihilators of certain
extension groups. If time allows, we will also show how to compute
another important homological invariant of generic IwahoriHecke
algebras; namely, the Higman ideal.







