Referent: Sophiane Yahiatene: Hurwitz action and extended Weyl groups
Zeit: Donnerstag, 25.04.2019, 17:00 h
Ort:Raum 48-436
In the talk we will investigate the so-called extended Weyl groups which can be seen as an extension of a family of Coxeter groups. In these groups we will consider a class of distinguished elements, called Coxeter transformations and define a group action on certain factorizations of them. The action is called Hurwitz action and appears in the study of hereditary abelian categories. It serves as a helpful tool in understanding the lattice of thick subcategories. (J.W. B. Baumeister and P. Wegener)