Cube complexes are analogues of simplicial complexes built using cubes rather than simplices. Under very mild combinatorial assumptions, they exhibit interesting geometric properties which make them useful in studying the fundamental groups of…
Categoria evento: Seminars
A variational approach to nonlocal curvature motions and to the crystalline mean curvature flow – Massimiliano Morini (Universita’ di Parma)
In the first part of the talk I will present a comprehensive theory that covers in a unified way a rather large class of (possibly) nonlocal geometric flows bearing a gradient flow structure with respect to suitable generalized perimeters. Within…
Constantin and Iyer’s representation formula for the Navier–Stokes equations on manifolds – Dejun Luo (Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing)
In this talk, we will present a probabilistic representation formula for the Navier-Stokes equations on compact Riemannian manifolds. Such a formula has been provided by Constantin and Iyer in the flat case. On a Riemannian manifold, there are…
Enumerative Properties of Gene tree configurations in species trees – Filippo Disanto (Università di Pisa)
New developments concerning the relationships between species trees, representing the branching histories of populations of organisms, and gene trees, which represent the histories of individual genomic regions, have generated new…
On the quantitative Bossel-Daners Inequality – Cristina Trombetti (Universita’ di Napoli Federico II)
The Bossel-Daners is a Faber-Krahn type inequality for the first Laplacian eigenvalue with Robin boundary conditions. We prove a stability result for such inequality.…
Hyperbolic Boundary Value Problems with Trihedral Corners – J. Rauch (Michigan)
Venue Sala Seminari (Dip. Matematica). Abstract…
Convergence of general weakly asymmetric exclusion processes – K. Matetski (University of Toronto)
In my ongoing work with J. Quastel we consider spatially periodic growth models built from weakly asymmetric exclusion processes with finite jump ranges and general jump rates. We prove that at a large scale and after renormalization these processes…
Optimizing the fractional power of a Diffusion operator – Carina Geldhauser
We study an optimization problem with SPDE constraints, which has the peculiarity that the control parameter $s$ is the $s$-th power of the diffusion operator in the state equation. Before moving to the SPDE case, we first describe the result of…
Numerical study of 1D optimal structures – Edouard Oudet (Université Grenoble Alpes)
We focus our attention on shape optimization problems in which one dimensional connected objects are involved. Very old and classical problems in calculus of variation are of this kind: euclidean Steiner’s tree problem, optimal irrigation networks,…
Numerical Analysis Seminar – Eigenvalues and eigenvectors of matrix polynomials – Raf Vandebril (KU Leuven)
Venue Sala Seminari (Dip. Matematica). Abstract…