Aula M1 Polo Fibonacci Abstract: Let f : S^2 –>S^2 be an orientation preserving branched covering of degree 2. The map f has two critical points c_1(f) and c_2(f). Let v_1(f) and v_2(f) be the corresponding critical values. The post-critical set of…
Eventi
Un esempio di noce di Grothendieck: la soluzione di Artin-Schreier del 17° problema di Hilbert- Fabrizio Broglia (Dipartimento di Matematica, Università di Pisa)
Un esmpio di noce di Grothendieck: la soluzione di Artin-Schreier del 17° problema di Hilbert…
Geometry of alternating links on surfaces – Joshua Howie (Monash University)
We study links in 3-manifolds which have alternating diagrams onto orientable surfaces of positive genus. When the diagram is sufficiently complicated, we are able to obtain topological and geometrical information about the link exterior. In…
A Phase Field Model for Thin Elastic Structures with Topological Constraint – Patrick Dondl (Universita’ di Freiburg)
With applications in the area of biological membranes in mind, we consider the problem of minimizing Willmore’s energy among the class of closed, connected surfaces with given surface area that are confined to a fixed container. Based on a phase…
Kähler o non-Kähler, questo è il problema – Nicoletta Tardini (Università degli studi di Parma)
Le varietà Kähleriane, introdotte negli anni ’30, rappresentano una classe speciale di varietà differenziabili poiché possiedono una struttura complessa, una struttura metrica e una struttura simplettica che sono compatibili tra loro. Esempi di tali…
Duality for the W_\\infty Wasserstein distance – Luigi De Pascale (Universita’ di Firenze)
I will first give a short survey to recall the importance of convexity in the classical Monge problem. I will then introduce the $W_\infty$ Wasserstein distance and discuss the lack of convexity of the underlying problem. The next step will be to…
Algebre skein di superfici a bordo – Francois Costantino (Université de Toulouse)
(Collaborazione con Thang Le) Le algebre skein delle superfici chiuse sono oggetti estremamente ricchi di struttura e studiati.Recentemente, partendo da lavori di Bonahon-Wong e di Muller, Thang Le ha definito una versione delle algebre skein per…
On concordance and realted problems – Carlo Collari (IMT-Indam)
Aula N – Polo Fibonacci Abstract: A knot is a connected compact smooth sub-manifold of $\mathbb{S}^3$ (more in general in a three manifold, but we will be interested only in $\mathbb{S}^3$). Two knots are \emph{concordant} if they bound a properly…
A variational approach to the mean field planning problem – Carlo Orrieri (Univ. “La Sapienza”)
In the talk we introduce the so-called mean field planning problem: a coupled system of PDEs, a forward continuity equation and a backward Hamilton-Jacobi equation. The problem can be viewed as a modification of the mean field games system as well…
On the local-global divisibility and the Tate-Shafarevich group – Gabriele Ranieri (Pontificia Universidad Catolica Valparaiso)
On the local-global divisibility and the Tate-Shafarevich group. Abstract: Let k be a global field and let A be a commutative algebraic group defined over k. Consider the following question : Problem. Let P be in A(k) and let q be a positive…