by
Abstract:
We classify
irreducible trigonal curves in Hirzebruch
surfaces that admit a dihedral cover and study geometric properties of such
curves. In particular, we prove an analog of Oka's
conjecture stating that an irreducible trigonal curve
admits an S_3 cover if and only if it is of torus type.
Date: 19 March 2010 Friday
Time: 15:40
Place: Bilkent,
Mathematics Seminar Room SA-141
Tea and cookies will be served before the
talk.