Come nasce un manuale di matematica o di fisica? Chi sono tutti quei nomi che si trovano citati nel colophon…
Eventi
Derived invariants in characteristic $p$ – Benjamin Antieau (Northwestern University)
I will discuss joint work with Daniel Bragg on the identification of derived invariants of smooth projective varieties in characteristic $p$, especially using information from crystalline cohomology.…
Lefschetz theory beyond positivity – Karim Adiprasito (University of Copenhagen, Denmark)
I will survey and present techniques for Lefschetz theorems beyond the case of Kaehler manifolds, and in particular discuss the Lefschetz theorem for non-projective toric varieties. Click here to see the video of the talk.…
Levi restriction for Coulomb branch algebras and categorical $\mathfrak{g}$-actions for truncated shifted Yangians – Joel Kamnitzer (University of Toronto, Canada)
Given a representation $V$ of a reductive group $G$, Braverman-Finkelberg-Nakajima defined a Poisson variety called the Coulomb branch, using a convolution algebra construction. This variety comes with a natural deformation quantization, called a…
Central limit theorems for counting measures in coarse negative curvature – Giulio Tiozzo (University of Toronto)
We establish general central limit theorems for an action of a group on a hyperbolic space with respect to counting for the word length in the group. In 2013, Chas, Li, and Maskit produced numerical experiments on random closed geodesics on a…
From quantization of measures to weighted ultrafast diffusion equations – Mikaela Iacobelli (ETH Zurich)
In this talk I will discuss some recent results on the asymptotic behaviour of a family of weighted ultrafast diffusion PDEs. These equations are motivated by the gradient flow approach to the problem of quantization of measures, introduced in a…
In the long run, we are all dead: al lavoro con i dati – Nevio Dubbini (Miningful Studio)
Laurea in matematica con una tesi in teoria dell’informazione, Ph.D. in matematica su un problema inerente la robotica, un post-doc in ambito…
What determines a variety? – János Kollár (Princeton University)
A scheme X is a topological space — which we denote by $|X|$ — and a sheaf of rings on the open subsets of $|X|$. We study the following natural but seldom considered questions. How to read off properties of $X$ from $|X|$? Does $|X|$ alone…
Gromov-hyperbolicity and beyond – Alessandro Sisto (ETH Zurigo)
The protagonists of the talk are (Gromov-)hyperbolicity and mapping class groups, both of which I will introduce during the talk. Hyperbolicity is a central notion in geometric group theory which captures the large-scale geometry of negatively…
Perelman, the Ricci flow and the Poincarè Conjecture – Carlo Mantegazza (Universita’ di Napoli Federico II)
I will present an overview of the Ricci flow and of its geometric applications, in particular the proof of Poincare’ conjecture. It will be a panoramic and informative talk aimed at non specialists.…