Vorträge in der Woche 24.04.2023 bis 30.04.2023
Vorherige Woche Nächste Woche Alle Vorträge
Montag, 24.04.2023: Vortrag in der Reihe "Mathematiker im Beruf"
Matthias (Sachgebietsleiter beim Bundesnachrichtendienst)
In der Vortragsreihe "Mathematiker im Beruf", die sich vor allem an die Studierenden des Fachbereichs Mathematik richtet, berichten Mathematiker über ihren Werdegang, ihr jetziges Arbeitsfeld und wie ihnen ihr Mathematikstudium dabei zu gute kommt. --- Matthias arbeitet seit bald zwei Jahrzehnten in der technischen Aufklärung des Bundesnachrichtendiensts. Zwischen Kryptographie und Controlling, Informations- und Projektmanagement, parlamnentarischer Kontrolle und internationaler Zusammenarbeit hat er ein breites Aufgabenspektrum kennengelernt. In seinem Vortrag gibt er Einblicke in einen nicht ganz typischen Werdegang.
| Uhrzeit: | 16:00 - 16:45 |
| Ort: | N14 |
| Gruppe: | Kolloquium |
| Einladender: | Fachschaft Mathematik + Studiendekan |
Mittwoch, 26.04.2023: The tropical bigonal construction and its relation to tropical Prym varieties
Felix Röhrle (Universität Tübingen)
I will start this talk with a detailed walk-through of the tropical bigonal construction. This is the simplest special case of the tropical Donagi construction, which in turn is a combinatorial analogue of an algebraic construction proposed by Ron Donagi in 1981. Just like the algebraic role model, the combinatorial version of the construction has a close relation to Prym varieties. The goal of the talk is to present an exemplary computational verification of the fact that the Prym variety of the tropical bigonal construction is dual to the Prym variety of the input data. To this end, I will give an introduction to tropical abelian varieties in general, with tropical Jacobians and finally tropical Prym varieties as the central examples. This talk is based on joint work with Dmitry Zakharov.
| Uhrzeit: | 10:30 - 11:30 |
| Ort: | S08 |
| Gruppe: | Oberseminar kombinatorische algebraische Geometrie |
| Einladender: | Daniele Agostini, Hannah Markwig |
Donnerstag, 27.04.2023: Foundations of Statistical Mechanics in and out of Equilibrium
Prof. Peter Reimann (Universität Bielefeld)
The universal and irreversible tendency of closed systems towards thermal equilibrium is a well-established empirical fact in the macroscopic world, but in spite of more than a century of theoretical efforts, it has still not been satisfactorily reconciled with the basic laws of physics, which govern the microscopic world and which are fundamentally reversible. Here, some interesting new developments in the context of quantum many-body systems will be highlighted.
| Uhrzeit: | 14:30 |
| Ort: | online - wenn Sie Zugang haben wollen, schicken Sie bitte eine Nachricht an Elena Kabagema-Bilan |
| Gruppe: | Oberseminar Mathematical Physics |
| Einladender: | Capel, Keppeler, Lemm, Pickl, Teufel, Tumulka |
Donnerstag, 27.04.2023: Magnetic properties of ground states in many-electron systems
Prof. Tadahiro Miyao (University of Hokkaido)
A mathematical understanding of the mechanism of metallic ferromagnetism still needs to be completed. In this talk, the following three fundamental theorems on metallic ferromagnetism will be first outlined: the Marshall-Lieb-Mattis theorem, the Lieb theorem, and the stability theorem of Lieb ferrimagnetism. Next, I will outline a mathematical framework within which these theorems can be unified. The theory is formulated using the standard forms of von Neumann algebras.
| Uhrzeit: | 16:00 |
| Ort: | C3N14 |
| Gruppe: | Oberseminar Mathematical Physics |
| Einladender: | Capel, Keppeler, Lemm, Pickl, Teufel, Tumulka |