Date:
Thu, 03/04/202510:00-11:00
Location:
Ross 70
Groups and dynamics seminar
Time: Thursday, 30/1, 10AM
Place: Ross 70
Speaker: Benjy Weiss (HUJI)
Title: Topologies on countable groups
Abstract:
Questions about the possibility of constructing non-discrete topologies on groups have a long history.
In 1980 Olshanski constructed a countable group that carries no such topology. Residually finite
groups are embeddable in compact groups and thus have a non-trivial topology.
I will discuss a recent result (joint with Eli Glasner) that shows that these groups carry a non-trivial
non-compact topology.
Time: Thursday, 30/1, 10AM
Place: Ross 70
Speaker: Benjy Weiss (HUJI)
Title: Topologies on countable groups
Abstract:
Questions about the possibility of constructing non-discrete topologies on groups have a long history.
In 1980 Olshanski constructed a countable group that carries no such topology. Residually finite
groups are embeddable in compact groups and thus have a non-trivial topology.
I will discuss a recent result (joint with Eli Glasner) that shows that these groups carry a non-trivial
non-compact topology.