The thresholding scheme, a time discretization for mean-curvature flow was introduced by Meriman, Bence and Osher in 1992. In the talk we present new convergence results for modern variants of this scheme, in particular in the multi-phase case with…
Categoria evento: Seminars
Classifications of germs of diffeomorphisms and fractal properties of their orbits – Maja Resman (University of Zagreb)
We are motivated by the question of recognizing a germ of a diffeomorphism by looking at only one (discrete) orbit. The method we propose uses fractal properties of the orbit: its box dimension, or, more generally, the area of its…
Earnshaw’s Theorem in Electrostatics – Jeffrey Rauch (University of Michigan)
Earnshaw’s Theorem. (Trans. Cambridge Phil. Soc(1842)). A test charge in an electrostatic field can never be in a position of stable equilibrium. This theorem is still not proved but much progress has been made. Some seemingly more difficult results…
Location of the complex eigenvalues of dissipative problems – Vesselin Petkov (University of Bordeaux)
Venue Sala Riunioni (Dip. Matematica). Abstract…
Optimization & Numerical Analysis seminars”- Numerical methods for computing the steady-state distribution of a G-network. – Tommaso Nesti (University of Pisa) (Il Seminario si svolgerà nella Sala Seminari Est, Dipartimento Informatica.)
G-networks are a class of queueing networks introduced by E. Gelembe in 1989, which are characterized by the presence of positive and negative customers. Unlike classical queueing networks, the equations yielding the steady-state distribution of a…
Linear Response and periodic orbits – Mark Pollicott (University of Warwick)
Venue Sala Conferenze (Puteano, Centro De Giorgi). Abstract…
Global solvability of the Kirchhoff equation with Gevrey data – Tokio Matsuyama (Chuo University, Tokyo)
This talk is based on a joint work with Michael Ruzhansky and it is devoted to proving the global solvability of the Cauchy problem for the Kirchhoff equation in the Gevrey space. More precise results are derived for solutions in the s-Gevrey…
An integrable billiard close to an ellipse of small eccentricity is an ellipse – Jacopo De Simoi (University of Toronto)
In 1927 G. Birkhoff conjectured that if a billiard in a strictly convex smoothdomain is integrable, the domain has to be an ellipse (or a circle). Theconjecture is still wide open, and presents remarkable relations with openquestions in inverse…
On recent results of extreme value theory applied to dynamical systems – Sandro Vaienti (CPT Marseille)
We give a review of a few recent results of extreme value theory applied to random dynamical systems and to coupled lattice maps…
Torus surgery in the 4-sphere – Kyle Larson (Università di Austin (Texas))
I will introduce the operation of torus surgery in the 4-sphere, and describe some recent results concerning which 4-manifolds can beproduced in this way and the uniqueness of such descriptions. As motivation I will discuss analogous results and…