abstract: In this seminar I will talk about a wide class of non-local energies that are defined on the Radon measures of $\mathbb{R}N$.
After introducing briefly the literature, I will focus on some new results. I will treat the symmetry of the minimizers, that is closely related to the convexity of the energy.
Then I will pass to the regularity results for the minimizers, that are connected to the previous topic: it is possible to obtain an $L{\infty}$ bound for the \emph{radial} minimizers if the concentration of the mass is strongly penalized.
This talk is based on a paper in collaboration with Aldo Pratelli.