Top-level heading

Some new quantitative spectral inequalities

In last years, there has been some effort to get quantitative versions of the most classical spectral inequalities, namely the Faber-Krahn inequality for the first eigenvalue of the Dirichlet Laplacia...

Equazione di Perona-Malik: risultati noti e problemi aperti

L'equazione di Perona-Malik e' stata introdotta ormai vent'anni or sono nel contesto del trattamento d'immagini. Nella sua versione semplificata in dimensione uno si tratta di un'equazione parabolica ...

Shape-from-shading and Machine Learning

In this talk, I will show how Machine Learning can help solving the well-known Shape-from-shading problem. This problem is usually solved using either methods of resolution of the PDEs or optimization...

Un approccio geometrico alle transizioni di fase frazionarie

Prenderemo in considerazione alcune equazioni ellittiche frazionarie ed alcuni problemi geometrici a loro collegati, tra cui: simmetria e rigidita` delle soluzioni, stime di densita`, Gamma-convergenz...

Alcune proprietà generiche di non degeneratezza di punti critici

Data una varietà Riemanniana compatta, regolare, di dimensione finita n, senza frontiera, possiamo dimostrare che, per una generica metrica g, tutti i punti critici della curvatura scalare S_g associa...

Dirichlet problems with singular and quadratic growth lower order terms

We present some of the results obtained in collaboration with Boccardo, Leonori and Porretta about the existence of positive solutions of Dirichlet problems like \begin{equation} \left\{ \begin{array}...

Least action principles allowing dissipation effects

Usually, least action principles lead to hamiltonian, conservative and time reversible solutions in which no dissipation effect can be input. We show, through some examples related to ODEs or PDEs in ...

Jacobians revisited

I will present joint results with H.-M. Nguyen concerning the study of the Jacobian determinant of maps from R^N into R^N (and also S^N into S^N). New estimates in the Wasserstein metric illuminate cl...

Stability results for sign-changing solutions of critical elliptic equations

On a compact Riemannian manifold, we present stability results and their instability counterpart for sign-changing solutions of elliptic equations with critical nonlinearities. Such equations are said...

Optimal transport problems in some sandpile models

We will discuss the relationships of the Monge problem with a common differential model in granular matter theory. We will show that the Monge problem permits to prove existence and uniqueness/multipl...

Optimization-based Multilevel Algorithm for Minimization Problems in Image Processing

In this talk, we introduce a fast multilevel method for solving minimization problems arising in various image restoration problems. Different from traditional multilevel methods which solve the the m...

Perturbation bounds for eigenvalues

If A and B are two matrices, what can be said about the distance between their eigenvalues in terms of the distance...