29.04.2026, 13:00 - 13:45 Uhr
– Campus Golm, Building 9, Room 1.22
Institutskolloquium
What is ... a Krylov subspace?
Thomas Mach (Universität Potsdam)
Fernando Lledo (University Carlos III de Madrid)
In the present talk I will briefly review certain aspects of the dichotomy amenable/paradoxical in the category of metric spaces and inverse semigroups. Then I will address the question of defining a reasonable metric structure on a discrete inverse semigroup and study the properties of its uniform Roe algebra like Foelner type conditions, nuclearity or exactness.