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A crash course on regularity theory for elliptic PDEs: when coefficients get rough

Abstract: (i) A powerful tool in regularity theory for PDEs is given by representation formulas: your solution is expressed by the convolution of the data of the equation with a kernel with known (goo...

Irregular surfaces of general type with minimal holomorphic Euler characteristic

We explain our recent work on the classification of surfaces of general type with p_g=q=2 or p_g=q=1. Our approach is based on cohomological rank functions, the Chen-Jiang decomposition/Fujita decompo...

Regenerations and applications

Chen-Gounelas-Liedtke recently introduced a powerful regeneration technique, a process opposite to specialization, to prove existence results for rational curves on projective K3 surfaces. In the talk...

Curve e dimostrazioni come boundary objects tra matematica e fisica: dall'analisi epistemologica alla formazione degli insegnanti e alle sperimentazioni in aula

In questo contributo si presenteranno alcuni risultati di un progetto di ricerca internazionale (IDENTITIES) sul tema dell'educazione all'interdisciplinarità tra matematica e fisica nella scuola secon...

Moduli of K3 Surfaces, Wall-crossing, and the Hassett-Keel Program

I will survey some results from the study of moduli spaces of higher dimensional varieties as well as the Hassett—Keel program for the moduli space of curves. I will then discuss applications of these...

Dynamics of Hamiltonian PDEs

In this talk I will discuss some results about long time behaviors of solutions to Hamiltonian PDEs (Schrödinger, Kirchhoff, etc). In particular I will focus on a recent result where we (with J. Berni...

Swarm-Based Gradient Descent Methods for Non-Convex Optimization

We discuss a novel class of swarm-based gradient descent (SBGD) methods for non-convex optimization. The swarm consists of agents, each is identified with position, x, and mass, m. There are three key...

Emergent Behavior in Alignment Dynamics

A fascinating aspect of collective dynamics is self-organization of small-scale interactions into high-order structures with larger-scale patterns. In different contexts these are clusters which take ...

Approximation of stable solutions to second order mean field game systems

We introduce a general framework for the study of numerical approximations of a certain class of solutions, called stable solutions, of second order mean-field game systems for which uniqueness of sol...
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