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On the approximation of the principal eigenvalue for a class of nonlinear elliptic operators

We will introduce the concept of the principal eigenvalue for fully nonlinear operators not in divergence form. In particular, we shall see that the principal eigenvalue can be defined through a max-m...

Quasi-periodic solutions for fully nonlinear NLS

SEMINARIO DEI DOTTORANDI We consider a class of fully nonlinear, autonomous and reversible Schrödinger equations on the circle and we prove the existence and the stability of Cantor families of (small...

Uno schema semi-lagrangiano accoppiato ad approssimazioni a Base Radiale per la ricostruzione di superfici

Proponiamo uno schema semi-lagrangiano accoppiato a tecniche di interpolazione con Basi Radiali, per approssimare un modello di flusso a curvatura media di tipo level-set, proposto da Zhao et al. (200...

Multi orbit concentration

In this lecture we consider a singularly perturbed semilinear elliptic problem with power non-linearity in Annular Domains in R2n and show the existence of two orthogonal Sn−1 concentrating solution...

On the structure of optimal martingale transport plans in general dimensions

I will describe the profile of optimal solutions of the martingale counterpart of the Monge mass transport problem. These are one-step martingales that maximize or minimize the expected value of the m...

Appearance Fabrication: An Optimization Approach

Abstract: Today’s 3D printers are likely to revolutionize personal fabrication, with their hardware improving everyday and their cost getting lower. In this walk, I will present my work in using 3D pr...

Chevron structures in Smectic A liquid crystals

We study the Chen-Lubensky free energy functional to understand the zigzag pattern formed in a smectic A liquid crystal in the presence of an applied magnetic field. We identify a small dimensionless ...

1D and multi-d Burgers Turbulence as a model case for the Kolmogorov Theory

The Kolmogorov 1941 theory (K41) is, in a way, the starting point for all models of turbulence. In particular, K41 and corrections to it provide estimates of small-scale quantities such as increments ...

Large deviations of the empirical current in zero-range processes on a ring.

We examine atypical current fluctuations in totally asymmetric zero-range processes in one dimension with periodic boundary conditions. The zero-range processes is a stochastic lattice gas in which ea...