[Turkmath:5305] MSGSU Matematik Seminerleri (17 Aralık 2021, 17:00)

[İpek Tuvay]

Sayın liste üyeleri,

MSGSÜ Matematik Bölümü Genel Seminerinde bu haftaki konuşmacımız Koç
Üniversitesi'nden Asgar Jamneshan. Seminer ile ilgili detaylar aşağıda yer
almaktadır.
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*Time: *Friday, December 17, 2021 at 17:00

*Title: *The structure of arbitrary Conze-Lesigne systems

*Abstract:* We consider probability-preserving dynamical systems from
countable abelian group actions.  Such a system is said to be a
Conze-Lesigne system if it is equal to its second Host-Kra-Ziegler factor
(these factors arise in the study of multiple recurrence and play a
foundational role in related areas in additive combinatorics and number
theory).  We provide a classification of Conze-Lesigne systems in terms of
algebraic data.  More precisely, we show that an arbitrary Conze-Lesigne
system is an inverse limit of translational systems arising from locally
compact nilpotent groups of nilpotency class 2 quotient by a lattice.
Results of this type were previously known when the acting group is
finitely generated or a direct sum of cyclic groups.  The talk aims at
introducing the field.  If time permits, we will present an application to
additive combinatorics.  The talk is based on recent joint works with Or
Shalom and Terence Tao.

*Link: *
https://teams.microsoft.com/l/meetup-join/19%3a1eaca84648fa440e94bc4d7382675247%40thread.tacv2/1639373395560?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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*Gelecek konuşmalar için:* https://researchseminars.org/seminar/MSGSUMath

İyi günler dilerim,

İpek Tuvay
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