[Settfa] Seminar 3.10.2023: Ziemowit Kostana

[Wieslaw Kubis]

Dear all,

The system probably is still not sending the automatic announcements, so 
I'm forwarding it below.

Best regards,

Wieslaw


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Ziemowit Kostana

Bar-Ilan University, Israel

Topological universality of the automorphism groups of uncountable 
Fraïssé limits

In the typical cases, the automorphism group of a countable Fraïssé 
limit is universal (even as a topological group) for automorphism groups 
of its substructures. For uncountable Fraïssé limits, this is usually 
not the case, even for the "standard" classes, like graphs or linear 
orders. In this talk I will show some examples of uncountable Fraïssé 
limits, whose automorphism groups is topologically universal for 
automorphism groups of its substructures. The examples will consist of 
linear orders and Boolean algebras.