Top-level heading

Local and global behaviour of solutions of some quasilinear Hamilton Jacobi equations

We study the boundary behaviour of the solutions of (E) \Delta_p u+|\nabla u|^q=0 in a domain \Omega \subset \mathbb R^N, when N\geq p> q>p-1. We first recall the results obtained in the case p=...

Stability of the isoperimetric inequality and Polya-Szego inequality under Steiner rearrangement

I shall start with a quick review of the basic properties of Steiner symmetrization of sets and functions. Through some recently developed analytical techniques, I will give a characterization of the ...

Soluzioni deboli per Fokker-Planck e Mean Field Games

La teoria dei mean-field games proposta da Lasry e Lions, e in parallelo da Huang, Caines e Malhame', a partire dal 2006, e' un modello di campo medio per dinamiche con grandi popolazioni di piccoli a...

Optimal estimates in stochastic homogenization for nondivergence form equations

We present some recent results concerning the homogenization of uniformly elliptic equations in nondivergence form. The equations are assumed to have coefficients which are independent at unit distanc...

Disuguaglianze di Sobolev migliorate e decomposizione in profili in spazi di Sobolev frazionari

Presenteremo nuovi miglioramenti della disuguaglianza di Sobolev in spazi frazionari tipo H^s in termini di norme di Morrey. Da queste si prova immediatamente esistenza di funzioni ottimali per la dis...

Ordinary Differential Equations and Singular Integrals

Given a Lipschitz vector field, the classical Cauchy-Lipschitz theory gives existence, uniqueness and regularity of the associated ODE flow. In recent years, much attention has been devoted to extensi...

Some variations on Ricci Flow

I will present and discuss some results and problems about flows of metrics on Riemannian manifolds correlated to Ricci flow: - The "renormalization group" flow, truncated at the second order term. Th...

Hénon type equations and concentration on spheres

In this talk, I will present the concentration profile of various kind of symmetric solutions of some semilinear elliptic problems arising in astrophysics and in diffusion phenomena. Motivated by thes...

Scattering in the energy space for nonlinear Schrödinger equations

We study the theory of Scattering in the energy space for various nonlinear Schr?dinger equations. In dimension 3 or bigger we consider a variable coefficients equation, for a gauge invariant, defocus...

The rigidity problem for symmetrization inequalities

Steiner symmetrization is a very useful tool in the study of isoperimetric inequality. This is also due to the fact that the perimeter of a set is less or equal than the perimeter of its Steiner symme...

Analisi ed approssimazione di alcuni modelli non Lambertiani per il problema di Shape-from-Shading

In questo seminario presenteremo in un'unica formulazione matematica due modelli di riflessione per la risoluzione del problema di Shape-from-Shading nel caso di superfici non Lambertiane (il modello ...

Zubov's method for interconnected systems - a dissipative formulation

We study the domain of attraction of an asymptotically stable fixed point of the feedback interconnections of two nonlinear systems. For each subsystem we introduce an auxiliary system and assume that...