ODTÜ-BİLKENT
ALGEBRAIC GEOMETRY SEMINAR

“The Groupoid
of Orientation Twists”

by

Prof. Dr. Muhammed ULUDAĞ

galatasaray University

Abstract: This is an essay to define a higher modular
groupoid. The usual modular groupoid of triangulation flips admits ideal
triangulations of surfaces of fixed genus and punctures as objects and flips as
morphisms. The higher groupoid of orientation twists admits usual modular
groupoids as its objects.

Date:  5 November 2010 Friday

Time: 16:00

Place: Bilkent University,
Mathematics Seminar Room SA-141

Tea and cookies will be served before the
talk.