Maurizio Garrione, Politecnico di Milano, Some recent stability results for beams with intermediate piers, Tuesday, January 12, 2021, time 11:15, Link Zoom: https://polimi-it.zoom.us/j/84708758746?pwd=aFpGY09hSzZnNDg3alk4bnhTNDN6UT09
Abstract:Abstract:
We deal with nonlinear fourth-order evolution equations describing the dynamics of beams with one or more intermediate piers. We study the role of the geometry of the structure (that is, of the position of the piers), as well as the effect of a nonhomogeneous density, in the (linear) stability of bi-modal solutions. The analysis gives some evidence that both the asymmetry and the nonhomogeneity reinforce the structure

Vincenzo Vespri, Università di Firenze, Cryptocurrencies: the future of the money?, Thursday, December 17, 2020, time 14:00, aula virtuale
Abstract:Abstract:
In this talk I will speak about bitcoins and cryptocurrencies, how they work and their perspectives. I will consider the possible applications in business and IOT.

Vincenzo Vespri, Università di Firenze, Simulation of the chaos of the financial market through dynamical systems, Monday, November 30, 2020, time 15:30, Webex: Franco Tomarelli personal room
Abstract:Abstract:
We will follow the fractal market approach to simulate the chaos of the behaviour of the financial markets. We will use also some hypotheses of the behavioural finance.

Nicolò De Ponti, Università degli Studi di Pavia, Entropy-Transport distances between measures and metric measure spaces, Tuesday, Febraury 11, 2020, time 15:15, Aula seminari 3° piano
Abstract:Abstract:
After providing the necessary background material, we describe a class of distances coming from optimal Entropy-Transport problems, a recent generalization of optimal transport where also creation and destruction of mass is taken into account. Inspired by previous work of Gromov and Sturm, we then use these metrics to construct new meaningful distances between metric measure spaces with finite mass. This talk is based on a joint collaboration with Andrea Mondino and Giuseppe Savaré.

Giuseppe Maria Coclite, Politecnico di Bari, Nonlinear Peridynamic Models, Wednesday, January 22, 2020, time 15:15, Sala Consiglio 7° piano
Abstract:Abstract:
Some materials may naturally form discontinuities such as cracks as a result of scale effects and long range interactions. Peridynamic models such behavior introducing a new nonlocal framework for the basic equations of continuum mechanics. In this lecture we consider a nonlinear peridynamic model and discuss its well-posedness in suitable fractional Sobolev spaces. Those results were obtained in collaboration with S. Dipierro (Perth), F. Maddalena (Bari) and E. Valdinoci (Perth).

Matteo Cozzi, University of Bath, Long-time asymptotics for evolutionary crystal dislocations models, Tuesday, December 17, 2019, time 15:30, Aula seminari 3° piano
Abstract:Abstract:
In this talk, I will discuss a recent result concerning the long-time behavior of solutions to evolutionary Peierls-Nabarro type equations, related to crystal dislocations. I will present the construction of solutions that, at large times, behave like a superposi- tion of an arbitrary finite number of fundamental dislocations, equally oriented and centered near points that evolve according to a repulsive dynamical system. This result has been obtained in collaboration with J. D ?avila and M. del Pino (University of Bath).