海角精品黑料

Title: Residually finite groups that do not virtually have the unique product property

Abstract: We construct a finitely generated residually finite group G with the property that every finite index subgroup of G contains a subgroup isomorphic to Promislow's group. Hence G does not have a finite index subgroup with the unique product property. This is joint work with Naomi Bengi.

*We will gather for teatime in the lounge at 4pm after the talk.