17 novembre 2025 @ 14:00 – 15:00 – At the beginning of the 20th century, it was known that any compact connected, simply connected Riemann surface is biholomorphic to the projective line. Subsequently, several characterizations of projective spaces were established. For instance, Siu and Yau stated that projective spaces are the only Kähler manifolds with positive holomorphic bisectional curvature, and Mori proved that […]
14 novembre 2025 @ 11:00 – 12:00 – We consider linear waves on a bounded domain where one part of the boundary is governed by a coupled lower-dimensional wave equation (i.e., dynamic Ventcel/Wentzell boundary condition) and is subject to viscous damping. The other (possibly empty) part is left at rest. When the dynamic boundary geometrically controls the domain, we show that the total […]
13 novembre 2025 @ 14:30 – 15:30 – Dans un travail récent, McNew, Pollack et Singha Roy obtiennent plusieurs résultats relatifs à la distribution du facteur premier médian des entiers lorsque ce dernier est défini en tenant compte de la multiplicité. En particulier, le comportement asymptotique des lois locales est étudié et fait apparaître une transition de phase qui n’est pas décrite. Dans cet exposé, nous présenterons une partie des améliorations et des résultats obtenus pour […]
13 novembre 2025 @ 10:45 – 11:45 – Stochastic partial differential equations (SPDEs) are a major subject of current research in probability and analysis, with rich methodologies for studying existence and regularity. At the same time, SPDEs are increasingly used as statistical models for spatially and temporally structured data, where inference requires learning unknown parameters or functions from observations. In this talk, we […]
12 novembre 2025 @ Toute la journée – Journée conviviale d’exposés mathématiques pour les doctorant.e.s de l’IECL. Les exposés auront lieu en salle de conférence et les pauses en salle 313. Programme de la journée : 9h00 – 9h30 : Petit déjeuner 9h30 – 10h10 : Exposé de Sophie Baland Un modèle de branchement pour la dynamique des longueurs de télomères dans les […]
10 novembre 2025 @ 15:30 – 16:30 – The symmetrized Asymptotic Mean Value Laplacian \tilde{\Delta}, is obtained as limit of approximating integral operators \tilde{\Delta}_r, and is an extension of the classical Euclidean Laplace operator to the realm of metric measure spaces. We show that in the limit as r->0, as the operators eventually admit isolated eigenvalues defined via min-max procedure on any compact […]
10 novembre 2025 @ 14:00 – 15:00 – Les surfaces del Pezzo et leurs groupes d’automorphismes jouent un rôle clé dans la classification, à conjugaison près, des sous-groupes du groupe de Cremona du plan projectif. Sur un corps algébriquement clos, elles sont complètement classifiées, de même que le sont leurs groupes d’automorphismes. En particulier, il existe une unique classe d’isomorphismes de surfaces del Pezzo de degré […]
6 novembre 2025 @ 14:30 – 15:30 – In this talk, we will discuss diophantine approximations of irrational numbers by rational numbers, where the denominators are taken from certain interesting subsets of the positive integers. First, we will consider Diophantine approximations in which the denominators are drawn from the set of positive integers represented by a given positive definite integral binary quadratic form. […]
6 novembre 2025 @ 10:45 – 11:45 – The aim of this presentation is to show different results obtained in the field of semi-Markov processes focusing on risk/reliability indicators and related statistical inference aspects. The first part concerns discrete-time semi-Markov processes which are defined in a finite state space. Theoretical results are obtained in terms of evaluation and statistical estimation of risk indicators […]
