[Turkmath:5567] MSGSU Mathematics Seminars (20 April, 15:00)

[İpek Tuvay]

Dear all,
You can see the information for this week's seminar in our department below.
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*Time: *Wednesday, 20 April 2022, 15:00

*Speaker:* Daniel Max Hoffmann (University of Warsaw)

*Title: *On finite group action and model theory

*Abstract:* I will present results from my joint project with Piotr
Kowalski. It is about a model-theoretic description of actions of a fixed
finite group on quite arbitrary structures. More precisely, take a big
model M of some stable theory and a group G. Consider the family of all
substructures of M equipped with a group action (by automorphisms) of G.
The question is whether the sub-family of existentially closed (i.e. rich
in "solutions of equations") substructures with a group action of G can be
axiomatized, so whether we can first order statements which correspond to
being rich in solutions. We will analyze the situation for finite G and
express the problem in terms involving only the invariants of the group
action.

*Link: *
https://teams.microsoft.com/l/meetup-join/19%3a1eaca84648fa440e94bc4d7382675247%40thread.tacv2/1650261572215?context=%7b%22Tid%22%3a%22ddd5afa6-82d7-4e0e-b457-3000f5a23749%22%2c%22Oid%22%3a%22b11f2b28-e233-4b68-b781-77d2029695cb%22%7d
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*For future talks please visit: *
https://researchseminars.org/seminar/MSGSUMath

Best,

İpek Tuvay
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