Venue Aula Magna – Dipartimento di Matematica. Abstract…
Eventi
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…
Measured foliation at infinity of quasi-Fuchsian manifolds near the Fuchsian locus – Diptaishik Choudhury (Università del Lussemburgo)
Quasi-Fuchsian manifolds, topologically, are hyperbolic 3 manifolds M that are homeomorphic to SxR, where S is a closed surface with genus g >1 . The “boundary at infinity of M” consists of two copies of S and we focus on the horizontal measured…