Environmental noise in a continuum interacting particle system is a space-dependent noise acting on all particles simultaneously. We prove that a system of locally interacting diffusions carrying discrete masses, subject to an environmental noise…
Eventi
“Optimal design versus maximal Monge-Kantorovich metrics” – Guy Bouchittè
Venue Aula Magna – Dipartimento di Matematica. Abstract…
Ergodic properties for a stochastic two-layer model of geophysical fluid dynamics – Giulia Carigi (University of Reading)
Questo seminario è stato cancellato…
Automorfismi di gruppi abeliani ordinati e logica positiva – Rosario Mennuni (Università di Pisa)
Una costruzione comune in teoria dei modelli consiste nel partire da una teoria T, aggiungere al linguaggio un simbolo per un automorfismo, ottenendo una teoria T’, e considerare la classe K dei modelli esistenzialmente chiusi di T’. A volte, la…
Weak limit of homeomorphisms in $W^{1,n-1}$ and (INV) condition – Stanislav Hencl (Charles University Prague)
Let $\Omega,\Omega’\subset R^3$ be Lipschitz domains, let $f_m:\Omega\to\Omega’$ be a sequence of homeomorphisms with prescribed Dirichlet boundary condition and $\sup_m \int_{\Omega}(|Df_m|^2+1/J^2_{f_m})…
An arithmetic, hyperbolic, rational homology 3-sphere that bounds geometrically – Leonardo Ferrari (Neuchatel (Svizzera))
In this seminar, we’ll introduce Davis and Januszkiewicz combinatorial techniques for building manifolds from right-angled polytope, as well as some topological properties inherited by these manifolds. We’ll then present some obstructions to…
Local positivity and effective Diophantine approximation – Matthias Nickel (Pisa)
In this talk I will discuss a new approach to prove effective results in Diophantine approximation relying on lower bounds of Seshadri constants. I will then show how to use it to prove an effective theorem on the simultaneous approximation of two…
Un algoritmo base per il riconoscimento del nodo banale – Filippo Baroni (Università di Oxford)
Dato un diagramma di un nodo, è possibile determinare se si tratta del nodo banale? Questa domanda, apparentemente innocua, è rimasta irrisolta per più di 50 anni – dal 1910, quando Dehn per primo la propose, al 1961, quando Haken sviluppò gli…
Grassmann extrapolation for Born-Oppenheimer Molecular Dynamics – Filippo Lipparini (Dipartimento di Chimica e Chimica Industriale)
Born-Oppenheimer Molecular Dynamics (BOMD) is a powerful, yet very demanding technique in computational quantum chemistry. Performing a BOMD simulation require, for each time step, to compute the energy and forces for a quantum mechanical system,…
Free boundary regularity in the one-phase Stefan problem: a recent perturbative approach – Nicolò Forcillo (Università di Bologna)
In this talk, we focus on the free boundary regularity in the one-phase Stefan problem. Specifically, we describe a recent perturbative approach to the study of this. In the first part, we introduce some general notions and results connected with…