School of Mathematical Sciences

On subsemigroups of groups menu

On subsemigroups of groups

Xin Li (QMUL)
Mon, 19/01/2015 - 16:30
Engineering 371
Seminar series: 

We discuss algebraic properties of subsemigroups of groups. These properties first arose in the study of operator algebras attached to semigroups. In this talk, however, the focus will not be on operator algebras. On the one hand, this means that no operator algebraic prerequisites are required, and on the other hand, it allows us to focus on purely algebraic aspects which are hopefully interesting on their own right. Our main concepts will be illustrated by natural examples like Braid groups, Artin groups or the Thompson group.