[Settfa] Tuesday 15/05, Wieslaw Kubis

[kubis at math.cas.cz]

 ------------------------------------------------------------------------- 

 Tuesday 15th May, 10:00am 
 ------------------------------------------------------------------------- 

 Speaker:Wieslaw Kubis, IM CAS
 Title: A Fraisse limit whose group of automorphism is not universal

 Abstract  
Given a Fraisse class F consisting of finite models, let us denote by cF the class of all countable models whose all finite submodels are in F. Let U be the Fraisse limit of F. We say that Aut(U) is cF-universal if every group of the form Aut(M) with M \in cF embeds into Aut(U). We shall present a quite simple example of a Fraisse class F such that Aut(U) (where U is the Fraisse limit of F) is not cF-universal.
The example comes from a recent joint work with S. Shelah.

 For more information see the seminar web page at 
 https://calendar.math.cas.cz/set-theory-and-analysis-actual .