
School of Mathematics and Statistics
Gus Lehrer
University of Sydney
Extensions of vector fields invariant under a reflection group.
Friday 19th February, UNSW, in Red Centre, room 4082.
Using methods of algebraic geometry applied to intersections of
hypersurfaces which are invariant under the action of a reflection
group, Springer and I have shown how to construct subquotients of
such groups which are themselves reflection groups. The study of the
invariants, coexponents and other properties of these subquotients
raises interesting geometric questions which will be the subject of
this talk.
Please note that the seminar will meet at the University of NSW for
this talk; the reason for this is that
Jean Michel will speak in the joint SydneyUNSW colloquium at UNSW from 23pm.
