Friday, February 3, 14:00, 7.527
Chrysostomos Psaroudakis (NTNU Trondheim)
Infinite ladders induced by preprojective algebras.
A ladder is a recollement of triangulated categories together with a
(possible infinite) sequence of triangle functors going upwards or
downwards such that any three consecutive rows form a recollement of
triangulated categories. Ladders were introduced by
Beilinson-Ginzburg-Schechtman and recently ladders of derived categories
have attracted a lot of attention in representation theory of finite
dimensional algebras. The aim of this talk is first to discuss ladders of
recollements of compactly generated triangulated categories and then show
that the derived category of the preprojective algebra of Dynkin type A_n
admits a periodic infinite ladder. This talk is based on joint work with
Nan Gao (arXiv:1611.09973).