Lev Shneerson (The City University of New York) will be speaking next week in the algebra seminar. We will go out for lunch after the talk. Where: Quad Lecture Theatre S223 (note the non-standard location!) When: 12-1pm Title: On the growth and identities of semigroups Abstract: We will discuss connections between the asymptotic behavior and existence of non-trivial identities in some classes of finitely generated and finitely presented semigroups. Part of the talk will be based on recent results of joint work with David Easdown.