Conference programme 2023

Bielefeld-Münster Seminar on Groups, Geometry and Topology with talks by Daniel Keppeler (Münster), Amandine Escalier (Münster), Jonas Flechsig (Bielefeld) and Bianca Marchionna (Bielefeld). All lectures take place in room SRZ 216, Orléans-Ring 12.

The conference will report on various aspects of the rapid developments in Number Theory and Arithmetic in the past years. This concerns in particular smooth representation theory, Iwasawa theory, p-adic geometry and p-adic Hodge theory. All members of the Faculty of Mathematics and Computer Science are invited to join the "Bridging Talk" by Prof. Dr. Otmar Venjakob (Heidelberg) on Thursday, 16 February 2023, 4:20 pm in lecture hall M2, title: "Explicit Reciprocity Laws in Number Theory".

The eleventh edition of the Young Geometric Group Theory (YGGT) workshop focuses on four mini-courses which present a panoramic overview over some important developments in the research fields. Besides the four main lecture series a number of plenary presentations are organised to broaden the scope of the workshop, and to encourage the participants to explore the boundaries of the subject.

The workshop centers around two topics: "Random graphs and stochastic geometry" and "Branching and mathematical biology". The aim is to provide an opportunity of exchange between the different groups and to attract young researchers to the field. All members of the Faculty of Mathematics and Computer Science are invited to join the "Bridge Plenary Talk" by Remco van der Hofstad (TU Eindhoven) on Thursday, 23 March 2023, 4:30 pm in lecture hall M2, title: "Critical percolation on scale-free random graphs". The conference is part of the Focus Programme "Effective and dynamic behaviour of random structures".

The workshop focuses on the availability, derivation and discovery of variational principles for non-equilibrium systems, in particular, those which connect model structures on different lengths and time scales via microscopic derivations, such as hydrodynamic limits. We bring together physicists and mathematicians to discuss recent progress for specific systems as well as regarding general principles.

Set theory is a broad area of mathematics, with many interconnecting themes, and our knowledge is developing rapidly. This international workshop will bring together young mathematicians, providing in depth introductions to various topics in set theory, leading to questions at the forefront of research. Tutorials and talks will be given by both experienced researchers and postdocs, and will be primarily aimed at advanced PhD students and early career researchers.

The aim of this short workshop is to bring together some leading experts from both the stochastic analysis community and the QFT community to explore the exciting developments further.
This workshop is planned in close coordination with the related workshop "From perturbative to non-perturbative QFT", 14-16 June 2023.

The aim of this workshop is to bring together experts of the various lines of research to foster interaction and mutual understanding which structures and methods are needed for a successful step from perturbative to non-perturbative QFT.
This workshop is planned in close coordination with the related workshop  "Stochastic Analysis meets QFT - critical theory", 12-14 June 2023.

Since Elliotts classification of approximately finite C*-algebras it is well known that there are strong ties between classification theory and approximation theory for C*-algebras. The full depth of this relation became clear only after the groundbreaking work of Eberhard Kirchberg on tensor products and approximation properties of C*-algebras with astounding applications to (on first sight unrelated) important problems: the Connes embedding problem and the classification of (purely infinite) C*-algebras. The meeting will focus on breathtaking recent advances in these topics due to several young rising stars.

The purpose of the meeting is to study relationships between local and global invariants in Riemannian Geometry. Our intention is to bring together experts in the field as well as young mathematicians. The programme of the workshop is structured so that beyond the lectures there will be many opportunities for intensive discussions.

In the past two years, we have seen spectacular developments in elliptic PDE methods applied to complex geometry. Highlights include the L-infinity estimates for solutions to complex Monge-Ampere equations due to Guo-Phong-Tong and Li's proof of the SYZ conjecture for Fermat hypersurfaces. This conference aims to provide an exciting opportunity for the field to come together (for the first time in Germany!) and discuss and disseminate these recent advances.

Mixing phenomena and the evolution and stability of coherent vortex structures and interfaces play an essential role in the dynamics of fluids. Their study has a direct impact on the understanding of turbulent flows with real-world applications in oceanography, atmospheric dynamics, industrial processes and beyond. The Workshop will explore stability and mixing phenomena from a broad intradisciplinary perspective, including PDE techniques, stochastic differential equations, harmonic analysis, optimal transport,  numerical analysis and modeling aspects.

The purpose of the meeting is to discuss suitable abstractions of mathematical concepts used in numerical methods for PDEs and how to derive adequate interfaces for Numerical Software. Experts and young researchers collaborating on the development of the research software framework DUNE met in Münster to discuss challenges and possible solutions in particular for interfaces for high-regularity Finite-Element discretizations, like H² conforming elements.

This summer school provides an introduction to various aspects of t.d.l.c. groups aimed at graduate students and postgraduate fellows. Topics include Cayley-Abels graphs, homological methods, p-adic Lie groups and self-similarity.

Part of the Focus Programme: Actions of totally disconnected locally compact groups on discrete structures

Part of the Focus Programme: Actions of totally disconnected locally compact groups on discrete structures

Many discrete geometric structures admit symmetries that are not determined by a finite substructure. This phenomenon is reflected in the non-discreteness of their automorphism group. Conversely, sufficiently non-discrete t.d.l.c. groups admit geometric actions on such structures. This workshop focuses on the above approaches and their interplay.

A conference on the occasion of Katrin Tent's 60th birthday

The aim of this conference is to bring together researchers working in model theory and group theory, with a particular view towards geometric group theory.

Part of the Focus Programme: Actions of totally disconnected, locally compact groups on discrete structures

This workshop studies the relationship between local, or small-scale, and global, or large-scale, properties of t.d.l.c. groups, which is more subtle than for Lie groups. Small-scale structure, which manifests both in the topological group structure and the objects on which the groups act, interacts with large-scale properties such as simplicity, amenability and quasi-isometry type.

A conference on the occasion of Michael Rapoport's 75th birthday

The geometry of moduli spaces related to the Langlands programme is a rapidly evolving field. We bring together both experts and young researchers to foster these developments.

The "Joint Seminar on Complex Algebraic Geometry and Complex Analysis" is a research seminar, organised by the algebraic and complex geometry research groups in Bochum, Essen, Cologne, Münster, and Wuppertal. The seminar meets roughly twice per semester for a full day at one of the participating departments. There are three talks per meeting, both by invited guests and by speakers from the organising universities.

This meeting is part of the Priority Programme "Random Geometric Systems" (SPP 2265: "Zufällige geometrische Systeme") which is funded by the German Research Foundation (DFG, deutsche Forschungsgemeinschaft) and is devoted to the mathematical analysis of effects and phenomena that emerge from an interplay between randomness and geometry.

This workshop is part of the Topical Program "Cell Dynamics and Mathematical Modeling" which aims at an intensive interaction of biology and mathematics. Biomechanical properties and dynamic shape changes of cells are closely related to their respective state and cellular function. This can be observed, among other things, in the migration of primordial germ cells. Such processes can be well described mathematically, and the influence of important parameters can thus also be analyzed theoretically.