## Events

**past events**and here for a presentation of the Rome Centre on Mathematics for Modelling and Data ScienceS.

If you want to receive updates on RoMaDS activities, write an email to salvi(at)mat.uniroma2.it to be added to our

**mailing list**.

**Upcoming events**

**07.12.2023 - Seminar: Matteo Quattropani (La Sapienza)**, Mixing of the Averaging process on graphs

15h00-16h00, Department of Mathematics, Aula Dal Passo.

## Abstract

The Averaging process (a.k.a. repeated averages) is a mass redistribution model over the vertex set of a graph. Given a graph G, the process starts with a non-negative mass associated to each vertex. The edges of G are equipped with Poissonian clocks: when an edge rings, the masses at the two extremes of the edge are equally redistributed on these two vertices. Clearly, as time grows to infinity, the state of the system will converge (in some sense) to a flat configuration in which all the vertices have the same mass. This very simple process has been introduced to the probabilistic community by Aldous and Lanoue in 2012. However, up to few years ago, there was no graph for which sharp quantitative results on the time needed to reach equilibrium were available. Indeed, the analysis of this process requires different tools compared to the classical Markov chain framework, and even in the case of seemingly straightforward geometries—such as the complete graph or the 1-d torus—it can be handled only by means of non trivial probabilistic and functional analytic techniques. During the talk, I’ll try to give a broad overview of the problem and of its difficulties, and I'll present the few examples that have been completely settled.

Based on joint work with P. Caputo (Roma Tre) and F. Sau (Università di Trieste)

**18.01.2024 - Seminar: Andrea Clementi (Tor Vergata)**, The Minority Dynamics and the Power of Synchronicity

15h30-16h30, Department of Mathematics, Aula Dal Passo.

## Abstract

TBA

**08.02.2024 - Seminar: Lorenzo Dello Schiavo (Institute of Science and Technology Austria)**, Title TBA

15h00-16h00, Department of Mathematics, Aula Dal Passo.

## Abstract

TBA

**19-23.02.2024 - Mini-course: Giovanni Conforti (École Polytechnique, Paris) and Alain Durmus (École Polytechnique, Paris)**, Title TBA

Schedule TBA, Department of Mathematics, Aula Dal Passo.

## Abstract

TBA