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Department of Mathematics and Computer Science
Mathematics Münster
Münster Journal of Mathematics
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Events at the Mathematical Institute

20
Oct
2025

Akhil Mathew (University of Chicago): Sheared Witt vectors (after V. Drinfeld, E. Lau, and T. Zink)
Abstract: Motivated by Dieudonné theory, V. Drinfeld and E. Lau introduced a "decompletion" of the ring of Witt vectors W(R) of a derived p-complete ring R su...

27
Oct
2025

Guido Arnone (Universidad de Buenos Aires): K-theory of étale groupoids
Abstract: For an étale topological groupoid, we consider a dualisable category of sheaves associated to it and study its K-theory. In the case of groupoids ar...

28
Oct
2025

Boris Bilich (Haifa): Higher categories for classification of C*-algebras. Oberseminar C*-Algebren.
In broad terms, classification in mathematics means finding a clear and useful way to describe the isomorphism classes of a given category, such as those of fi...

03
Nov
2025

Georg Lehner (Universität Münster): On Verdier Duality
Abstract: Recent progress on the K-theory of "large" categories has raised interest in the algebraic K-theory of sheaves on locally compact Hausdorff spaces, ...

04
Nov
2025

Ralf Meyer (Göttingen): tba. Oberseminar C*-Algebren.

10
Nov
2025

Matthias Ludewig (Universität Greifswald): Generalized Kitaev Pairings in coarse geometry
Abstract: In Appendix C of his "Anyons" paper, Kitaev introduced the notion of a "generalized Chern number" for a 2-dimensional system by diving the system in t...

18
Nov
2025

Walter van Suijlekom (Nijmegen): A generalization of K-theory to operator systems. Oberseminar C*-Algebren.
We propose a generalization of K-theory to operator systems. Motivated by spectral truncations of noncommutative spaces described by C*-algebras and inspired by...

25
Nov
2025

Tattwamasi Amrutam (Warsaw): tba. Oberseminar C*-Algebren.

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Mathematisches Institut

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48149 Münster

Tel: +49 251 83-33748
Mathematisches.Institut@uni-muenster.de

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