M. Philippe Etienne, Ambassadeur de France en République Fédérale d'Allemagne, ancien élève de l'Ecole normale supérieure et agrégé de mathématiques nous a fait la surprise et le plaisir de visiter le stand "Maths in France".
Sara Zahedi, only woman recipient of an EMS Prize this year, visits our stand and talks about her love of mathematics, her visits to conference centres and some of the family issues linked to those visits and the attention one gets after receiving a priz
Sara Zahedi's research interests lie in the development and analysis of computational methods, in particular finite element methods, for solving partial differential equations on dynamic geometries. The main application she has in mind is multiphase flows. She is also interested in numerical methods for representing and evolving interfaces separating immiscible fluids. Sara Zahedi is Assistant Professor at KTH in Stockholm.
A team of mathematicians is working together on a big project. Excitement of discovery, hope and disappointment, competition and recognition are shown from an infinitely close distance. Scientists united by the idea of discretization, which, in short, means: constructing continuous objects from basic building blocks. Akin to the scientists’ search for the right discretization of continuum, this film itself is composed of fragments – individual characters of different ages, temperaments and scientific approaches – which form a single continuous melody. The question of where the boundaries lie between mathematics and the lives of those who are involved in it and how much they are willing to sacrifice is as important as the search for precise scientific answers. A unique and unprecedented dive into the unknown world of mathematicians.
Two French mathematicians are among the ten recipients of the 2016 European Mathematical Society (EMS) prize: Vincent Calvez, chargé de recherche CNRS at the Unité de mathématiques pures et appliquées (CNRS/ENS de Lyon) and member of the Inria NuMed project team, as well as Hugo Duminil-Copin, professor at l'Université de Genève, who in September 2016 will join the Laboratoire Alexander Grothendieck (CNRS/IHÉS). These prizes are given every four years to mathematicians under 35 years of age who are from or who work in Europe.
Vincent Calvez's early research involved the modelization of the collective movements of bacteria toward their sources of food. These processes are simulated by transport equations presenting nonlinear interaction terms, which take into consideration the fact that the cells are aggregated. In connection with experimental biologists, Vincent Calvez developed a new model inspired by the kinetic theory of gases. This model describes both the individual movements of bacteria and the transport of colonies as a whole, and satisfactorily explains the specific characters of this movement. Another productive interaction was a collaboration with biophysicists that provided a new explanation for cell polarization, a ubiquitous biological phenomenon. More recently, Vincent Calvez and one of his students created a completely new approach to modelizing invasion fronts in ecology, another example of a phenomenon spreading in the form of waves.
Hugo Duminil-Copin's research has made considerable contributions to percolation theory, a branch of probability theory that is concerned with the behavior of connected clusters in random graphs. In particular, he is studying random walks, also known as “drunkard's walks” because the direction of each new step is chosen at random. Along with his thesis director Stanislav Smirnov, he is interested in self-avoiding random walks, in which the “drunkard” never returns to a place that has already been visited. The number of possible paths for a number of given steps depends on the network on which the movement is taking place. When there are a large number of steps, its value is expressed simply in accordance with a constant, called the “constant of connectivity.” Hugo Duminil-Copin succeeded in calculating the value of this constant in the case of a honeycomb lattice. These self-avoiding random walks are central to understanding important questions in physics, and are used, for instance, in statistical mechanics, such as the simplified models of polymer chains.
Link to the Press release on the website of the CNRS
Merci à l'Insmi & Cnrs Le Journal présents à 7ECM avec le CIRM pour les articles et informations / photos ci-dessus!
Many thanks to Insmi and to Cnrs Le Jounal, both present at 7ECM with CIRM, for the above artcles, information and photos!
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