Oberseminar Differentialgeometrie: Lennart Machill (Universität Münster), Vortrag: Nonlinear and Linearized Models in Elasticity
Monday, 04.12.2023 16:00 im Raum SRZ 214
Nonlinear and Linearized Models in Elasticity
4.12.2023 ? Lennart Machill ? Oberseminar Differentialgeometrie, Universität Münster
Many variational models in elasticity are nonlinear and nonconvex, resulting in difficult numerical
approximations and high computational costs. The derivation of simplified effective theories still
preserving the main features of the original systems plays therefore a significant role in
current research. Despite the long history of the subject, the theory flourished in the last twenty years
triggered by the availability of the rigidity estimate in [Friesecke, James, Müller ?02].
We discuss the latter estimate and give an introduction to variational theories in elasticity. A
particularly interesting case is the approximation of thin three-dimensional solids with lower
dimensional models, which requires analysing such inequalities with respect to the domain thickness.
In this context, we will include recent results in viscoelasticity and discuss a nonlinear Korn
inequality.
Angelegt am Monday, 14.08.2023 09:54 von Sandra Huppert
Geändert am Tuesday, 24.10.2023 08:42 von Sandra Huppert
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Mittagsseminar zur Arithmetik: Manuel Hoff (Bielefeld): Parahoric (G, mu)-displays
Tuesday, 05.12.2023 10:15 im Raum SRZ 216/217
Displays were introduced by Zink in the 2000s in order to generalize Dieudonné theory to arbitrary p-complete base rings. When studying Shmiura varieties and related objects one is naturally led to the task of defining group-theoretic versions of Abelian varieties and p-divisible groups.
We report on results in the direction of developing a theory of (G, mu)-displays for a datum (G, mu), where G is a parahoric Zp-group scheme, extending work of Bültel-Pappas and Pappas. We furthermore give an application to the EKOR-stratification on the special fiber of a Kisin-Pappas integral Shimura variety.
Angelegt am Tuesday, 14.11.2023 11:50 von Heike Harenbrock
Geändert am Tuesday, 14.11.2023 11:50 von Heike Harenbrock
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Dr. Tommaso Rosati (University of Warwick): Lower bounds to Lyapunov exponents for stochastic PDEs, Kolloquium Partial Differential Equations
Tuesday, 05.12.2023 14:15 im Raum SRZ 203
Inspired by problems from fluid dynamics, we introduce an approach to obtain lower bounds for Lyapunov exponents of stochastic PDEs. Our proof relies on the introduction of a novel Lyapunov functional for the projective process associated to the equation, based on the study of dynamics of the energy median and on a notion of non-degeneracy of the noise that leads to high-frequency stochastic instability. Joint work with Martin Hairer.
Angelegt am Friday, 08.09.2023 10:02 von N. N
Geändert am Monday, 20.11.2023 08:55 von Anke Pietsch
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Thomas Nikolaus: The algebraic K-Theory version of the KK-category. Oberseminar C*-Algebren.
Tuesday, 05.12.2023 16:15 im Raum SRZ 216/217
We will explain some recent developements in algebraic K-Theory and highlight similarities (and differences) to the situation in operator K-Theory. The central object that we consider is the category of non-commutative motives a la Blumberg--Gepner--Tabuada. We argue that this should be seen as an algebraic analogue of Kasparov's KK-category. Through recent developments of Efimov and Claussen--Scholze we can now transport some methods from the KK-category to the category of non-commutative motives, specifically give similar models of assembly maps. If time permits we explain applications to geometric topology.
Angelegt am Tuesday, 29.08.2023 09:53 von Elke Enning
Geändert am Monday, 06.11.2023 10:34 von Elke Enning
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Prof. Dr. Michael Liebendörfer (Paderborn): Entscheiden anhand von Definitionen ? Schwierigkeiten und Strategien von Erstsemester-Studierenden am Beispiel konstanter Folgen
Tuesday, 05.12.2023 17:00 im Raum M5
Kolloquium über Geschichte und Didaktik der Mathematik
Anlagen
5 LiebendoÌrfer.pdf
Angelegt am Monday, 25.09.2023 09:10 von Stephanie Auffenberg
Geändert am Monday, 25.09.2023 09:13 von Stephanie Auffenberg
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Juniorprofessorin Dr. Marlies Pirner (Antrittsvorlesung): Multi-species kinetic modeling and mathematical theory for physical applications?
Wednesday, 06.12.2023 10:15 im Raum M 4
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VortragPirner_06.12.23.pdf
Angelegt am Wednesday, 29.11.2023 11:02 von Julia Moudden
Geändert am Wednesday, 29.11.2023 11:03 von Julia Moudden
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Prof. Dr. Hendrik Weber (Antrittsvorlesung): Noise, differential equations and quantum fields
Wednesday, 06.12.2023 11:15 im Raum M 4
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VortragWeber_06.12.23.pdf
Angelegt am Wednesday, 29.11.2023 11:06 von Julia Moudden
Geändert am Friday, 01.12.2023 12:51 von Julia Moudden
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