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Large-time behavior of unbounded solutions of viscous Hamilton-Jacobi equations in R^N

We study the behavior as t \to +\infty of unbounded solutions of the so-called viscous Hamilton-Jacobi equation in the whole space R^N, in the superquadratic case; i.e., u_t - \Delta u +...

Bose fluids and positive solutions to weakly coupled elliptic system in the plane

We prove, using variational methods, the existence in dimension two of positive vector ground states solutions for Bose-Einstein type systems. The nonlinear interaction between two Bose fluids is assu...

Liouville type theorems and local behaviour of solutions to degenerate or singular problems

We consider an equation in divergence form with a singular/degenerate weight. We first study the regularity of the nodal sets of solutions in the linear case. Next, when the r.h.s. does not depend on ...

NLS: from the completely integrable to the general case

It is well known that cubic NLS is a completely integrable model and in particular there exist infinitely many conserved quantities associated with this equation. We shall discuss a possible approach ...

Effetto regolarizzante di un termine di ordine inferiore e proprietà di regolarità locale delle soluzioni in problemi di Dirichlet ellittici non coercitivi

In questo seminario presenterò alcuni dei risultati principali ottenuti nella mia tesi di dottorato. Essi riguardano alcune questioni relative a due classi di problemi di Dirichlet ellittici non coerc...

Elliptic systems with critical growth

I will present some results concerning the existence of nodal solutions to the Yamabe equation on the sphere and their connections with the existence of positive solutions to competitive elliptic syst...

Homogenization for a 2D, two-phase, isotropic and periodic mixture in linear elasticity

In this joint work with Marc Briane I will revisit one of the most elementary homogenization problems ever and demonstrate that abandonment of just one assumption, very strong ellipticity, drastically...

On existence and multiplicity for a class of problems with natural gradient growth

In this talk we discuss some recent results about a class of fully nonlinear second order partial differential problems in nondivergence form, uniformly elliptic with quadratic growth in the gradient....

A representation formula for viscosity solutions to PDE problems with sublinear operators

We provide a representation formula for viscosity solutions to a nonlinear second order parabolic PDE problem with sublinear operators. This is done through a dynamic programming principle which is a ...

Ocean dynamics from space

Abstract: The oceans provide essential services to our society, by regulating the climate, providing food and energy, ruling many of our economic activities. However, the marine ecosystem is more than...

Topological Signal Processing

Abstract: Signals are used in our everyday life to send and receive information or to extract information from an unknown environment. Typically, signals are defined over a metric space, i.e. time and...

Stochastic individual based models: from scaling limits to modelling of cancer therapies

Abstract: Stochastic individual base models, that is, measure valued Markov processes describing the evolution of interacting biological populations, have proven over the last years to be effective mo...