IPM Calendar 
Sunday 25 July 2021   Today  
Events for day: Wednesday 10 June 2020    
           15:30 - 17:30     Mathtematical Logic Weekly Seminar
Group Topologies on Automorphism Groups of First Order Structure


Automorphism groups of structures endowed with the topology generated by stabilisers of small subsets are topological groups and indeed when countable they are Polish. In this talk I will discuss different group topologies on automorphism groups of homogeneous structures and especially focus on minimal group topologies. A Hausdorff topological group is called minimal if it does not admit a strictly coarser Hausdorff group topology. I will provide some background, and discuss several classification of group topologies coarser than so called point-wise convergence topology in the case of automorphism groups of the countable random graph and Ur ...