Events

The great event on Recreational Mathematics and Mathematical Magic. Honoring Martin Gardner.

Given an incidence structure, one may model a variety of geometric problems. This Semester Program will revolve around two fundamental examples and their applications to modern challenges in the study, analysis, and design of materials. (1) Packings and patterns of circles where the underlying combinatorics are mixed with advanced geometric concepts and strong links are made to discrete differential geometry. (2) The rigidity and flexibility of bar-joint structures where real algebraic geometry is intertwined with sparse graph theory and matroidal techniques. A prime objective of the program is to advance the applicability of these topics to fundamental applications, most notably in statistical physics and materials science. The program will integrate diverse fields of discrete mathematics, geometry, theoretical computer science, mathematical biology, and statistical and soft matter physics. Various workshops will be designed to attract both theoretical and applied practitioners and to stimulate the cross-fertilization of ideas between these disparate communities.

This workshop brings together researchers from three distinct streams of mathematics: the classical rigidity theory of bar-joint and tensegrity frameworks in combinatorics and discrete geometry; the theory of generalized circle packing that arose from the study of 3-manifolds in geometric topology, extending to sphere packing and jamming; and discrete differential geometry. A scattering of results in recent years has started to forge connections among these fields. The main aim of the workshop is to encourage their cross-fertilization, with particular emphasis on the rigidity of inversive distance packings. Participants will attend presentations on cutting-edge research and initiate new collaborations.

The Institute for Mathematical Stochastics at the Technical University Braunschweig will host the Workshop "Stochastic processes on random geometries” scheduled from February 17-21 2025. The program will feature two mini lecture series delivered by: Martin Barlow (University of British Columbia) Nina Gantert (TU Munich) In addition, the event will include 14 invited lectures and one session dedicated to young researchers. The specific topics include random walks in random environment, static and dynamic percolation, interacting particle systems, statistical mechanics and their applications in physics, materials science and biology. Our aim is to provide a platform for the presentation of recent results, national and international scientific exchange and the education of younger scientists that are interested in the subject. For more information, including a list of invited speakers and a link for registration, see the workshop webpage. The workshop is supported by the SSP2265 "Random Geometric Systems".

The school in Geilo will be devoted to selected topics in analysis, geometry, and differential equations. Participants are invited to stay from Sunday evening March 2 to Friday March 7. The scientific program for the winter school will begin in the morning of Monday March 3. The main lecturers are: -Sean Curry (Oklahoma, USA) The Geometry of Strongly Pseudoconvex Domains -Sigmund Selberg (Bergen, Norway) TBA -Francisco Torres de Lizaur (Seville, Spain) TBA -Enrico Le Donne (Fribourg, Switzerland) (to be confirmed) In addition to these, the meeting will have regular / contributed lectures by participants.

This workshop will be centered on recent advances in graph rigidity and interactions between rigidity, algebraic statistics, and matroid theory. Three major advances are the recent resolution of the matroid maximality conjecture, the newly developed link to maximum likelihood estimation in Gaussian graphical models, and the recent positive resolution of Lovasz and Yemini's connectivity conjecture for generic rigidity. The workshop will showcase a diverse sample of current work addressing fundamental problems in graph rigidity, algebraic matroids, and algebraic statistics.

This is an informal workshop entirely dedicated to young mathematicians who work in differential geometry in a broad sense. The scientific theme of the workshop is the study of topological and geometric properties of complex manifolds, and, more in general, of manifolds endowed with ''special'' geometric structures, either integrable or non-integrable.

The workshop will explore various topics related to discrete structures and randomness, including but not limited to percolation, random graphs, and stochastic geometry. The program will feature presentations from the 9 keynote speakers below, as well as contributed talks. - Timothy Budd (Radboud University) - Nicolas Curien (Université Paris-Sud) - Daniel Dadush (Utrecht University) - Zakhar Kabluchko (University of Münster) - Júlia Komjáthy (Delft University of Technology) - Irène Marcovici (Université de Rouen Normandie) - Giovanni Peccati (University of Luxembourg) - Wioletta Ruszel (Utrecht University) - Clara Stegehuis (Twente University) For more information and registration, please visit our website: https://sites.google.com/rug.nl/words2025/home The registration deadline is February 28, 2025. We encourage junior researchers to propose a contributed talk. We look forward to seeing you in Groningen! Tobias Müller, Réka Szabó and Gilles Bonnet

The geometric arrangement of a material’s constituents plays an important role in governing its behavior. Concepts from discrete mathematics to describe these geometric arrangements, including notions of rigidity and flexibility, can bring fundamental insight into how a material might respond to stress, be designed, be reconfigured, etc. Beyond materials, the notions of network rigidity can be applied to more abstract networks and geometries, such as those found in data science. This workshop aims to build connections between the field of mathematical rigidity theory, other topics in applied mathematics, and related areas of science and engineering.

Within the mathematics of fluid mechanics, fluid-solid interactions have been a rapidly expanding field since the early 2000s. Fluid-solid problems are unique in that they have applications in a wide variety of fields. Systems mixing fluids and solids are involved in both industrial contexts (describing the behavior of wind turbines for energy production) and health issues (calculating the impact of hematocrit or the mechanical properties of red blood cells on blood viscosity). The various questions associated with these different experimental settings involve a wide range of mathematical fields, including analysis and simulation of partial differential equations, homogenization, control theory and statistical physics. LECTURES David Gérard-Varet (Université Paris-Cité) Helmut Abels (Universität Regensburg) TALKS Michele Coti-Zelati (Imperial College) TBC Mitia Duerinckx (FNRS, Université libre de Bruxelles) Sylvain Ervedoza (CNRS, Université de Bordeaux) Giusy Mazzone (Queen’s University) Amina Mecherbet (Université Paris-Cité) Mei Ming (Yunnan University) Monica Musso (University of Bath) Grigor Nika (Karlstad University) Charlotte Perrin (CNRS, Aix-Marseille Université) TBC Mythily Ramaswamy (Tata Institute) Elena Salguero (Max Planck Institute)