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Our seminar runs on Tuesdays from 13:00 to 14:00, unless under exceptional circumstances. During the Spring semester of 2026 the seminar always takes place in the IMADA Conference Room.
Contact: Matteo Pagliero - pagliero@imada.sdu.dk
10/02/2026: Gilles De Castro (Federal University of Santa Catarina)
Title: Algebras of one-sided subshifts over arbitrary alphabets
Abstract: Given an alphabet, which can be infinite, we consider subshifts defined by a set of forbidden words as a combinatorial object and define algebras associated with them. When the alphabet is finite, these include Carlsen's C*-algebras associated with subshifts. In this talk, I will explain how one naturally obtains a partial action from a subshift and how to use it to define the subshift algebras. As with graphs, even though we start with a combinatorial object, certain topological spaces arise from these algebras, one of them being the Ott-Tomforde-Willis (OTW) subshift. I will show how these C*-algebras are related to the conjugacy of Ott-Tomforde-Willis subshifts. At the end, I will briefly talk about the K-theory of the subshift C*-algebras. (Joint work with G. Boava, D. Gonçalves and D. van Wyk.)
17/02/2026: Ali Miller (KU Leuven)
Title: TBA
Abstract: TBA
24/02/2026: Mario Klisse (CAU Kiel)
Title: TBA
Abstract: TBA
3/03/2026: TBA
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10/03/2026: TBA
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17/03/2026: Vern Paulsen (University of Waterloo)
Title: TBA
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24/03/2026: TBA
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31/03/2026: No Seminar due to Easter Break
7/04/2026: TBA
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14/04/2026: Greg Patchell (University of Oxford)
Title: TBA
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21/04/2026: Georgios Baziotis (University of Delaware)
Title: TBA
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28/04/2026: Tatiana Shulman (University of Gothenburg)
Title: TBA
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5/05/2026: TBA
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12/05/2026: TBA
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19/05/2026: TBA
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26/05/2026: TBA
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Abstract: TBA
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