Higher zig-zag algebras

Joseph Grant (University of East Anglia)

Wednesday 18th January, 2017 16:00-17:00 Maths 522


The name zigzag algebras was introduced by Huerfano and Khovanov, but examples of these algebras have been studied for a long time.  As well as appearing in the modular representation theory of finite groups, the zigzag algebras of type A Dynkin graphs control braid group actions on derived categories via spherical twists.  I will introduce a new general class of algebras with spherical indecomposable projective modules which includes the classical zigzag algebras as a special case.  This will be illustrated by an explicit example.  Parts of this work are joint with Osamu Iyama.

Add to your calendar

Download event information as iCalendar file (only this event)