La mattina del prossimo 19 dicembre si terrà in modalità telematica l’assemblea del gruppo UMI “DinAmicI”, che sarà preceduta da un seminario tenuto dal Prof. Lucio Russo (Università di Roma Tor Vergata).

Il programma della mattina è il seguente:

• ore 10:30, seminario “Un’antica teoria sul primo sistema dinamico studiato: il sistema solare” (in italiano) tenuto dal Prof. Lucio Russo;
• a seguire, assemblea del gruppo UMI.

Il link per seguire gli eventi è https://meet.google.com/ote-yhuv-wus.

On 13-16 December 2022, the Centro “De Giorgi” of Pisa will host the workshop Statistical and Computational Aspects of Dynamics.

See the page of the event for further details.

Aims: After its establishment in the late 19th century through the efforts of Poincaré and Lyapunov, the theory of dynamical systems was applied to study the qualitative behaviour of dynamical processes in the real world. In such applications, problems related to parameter estimation, prediction and phase reconstruction in dynamics are ubiquitous and solving them involves the use of numerous statistical and computational techniques. The goal of this workshop is to provide a meeting place for those who work in these problems and initiate collaborations.

On 14-16 December 2022, the University of Turin, Italy, will host a three-day workshop in hamiltonian systems and celestial mechanics.

The workshop gathers recognized international experts which will present their recent contributions to the field of Hamiltonian Systems, with a special focus on Celestial Mechanics.

During these three days of conferences, many different aspects related to the above topics will be deepened. A major emphasis will be given on the theoretical aspects (e.g., dynamical systems, perturbation theory, variational methods, symplectic techniques), while more applied results will be also discussed.

The School on conformal symplectic dynamics and related fields will take place

8-12 May 2023 at CIRM, Marseille (France)

This school will introduce the study of conformally symplectic dynamical systems defined on symplectic manifolds or, more generally, on conformally symplectic manifolds. This is a young subject with remarkable recent developments which opened several directions of investigation at the crossroad of dynamical systems, symplectic and contact topology, Hamilton-Jacobi equations and, in particular, weak-KAM theory. The framework comprises and mixes conservative and dissipative aspects.

The Swiss Mathematical Society Autumn Workshop this year will be on the (broad) theme of

Dynamics and Groups

and will take place at the University of Zurich, from September 14 to 16.

The list of confirmed speakers is the following:

• Emmanuel Breuillard (Oxford)
• Nguyen-Thi Dang (Heidelberg)
• Alex Gorodnik (Zurich)
• Ursula Hamenstädt (Bonn)
• Alexander Kolpakov (Neuchâtel)
• Michael Magee (Durham)
• Nicolas Monod (Lausanne)
• Barbara Schapira (Rennes)
• Cagri Sert (Zurich)
• Uri Shapira (Technion, Haifa)

More information can be found at https://www.math.uzh.ch/dg22

Online lectures “Introduction to computational ergodic theory”

1-5 August, 2022

The Hokkaido Summer Institute organizes a zoom online lecture series on computational ergodic theory on 1-5 August, 2022. The goal of the lectures is to introduce a software and the related theory providing tools for computer aided proofs and rigorous estimates on the statistical properties of dynamics. The lectures includes basics on ergodic theory, tutorials on the language Julia, with an introduction to interval arithmetic libraries and computer assisted proofs in dynamical systems and ergodic theory problems and the package RigorousInvariantMeasure.jl, now part of the JuliaDynamics organization https://github.com/JuliaDynamics/RigorousInvariantMeasures.jl

Dynamics Seminar “A midsummer dynamic’s daydream”

Centro De Giorgi, Pisa, 28 June 2022

The event will take place in person. Those who are unable to be physically present may attend the talk via Zoom by following the link: https://us02web.zoom.us/j/83965821067?pwd=YU9MRHVVMlRQMXZycjVzVGR3VmlXZz09

9:15-10:15

Dong Han Kim (Dongguk University - Seoul)

“Intrinsic Diophantine approximation on circles and spheres”

Abstract: We study Lagrange spectra arising from intrinsic Diophantine approximation of copies of a circle and a sphere. More precisely, we consider three copies of a unit circle embedded in R^2 or R^3 and three copies of a unit sphere embedded in R^3 or R^4. We present a unified framework to connect the Lagrange spectra of these six spaces with the spectra of R and C. Combining this with prior work of Asmus L. Schmidt on the spectra of R and C, we can characterize, for each of the six spectra, the smallest accumulation point and the initial discrete part leading up to it completely. This is joint work with Byungchul Cha.

10-14 october 2022: Big Mapping Class Groups and Diffeomorphism Groups, CIRM, Marseille

Organizers: Kathryn Mann (Cornell University), Andrés Navas (Universidad de Santiago de Chile), Cristóbal Rivas (Universidad de Chile), Michele Triestino (Université de Bourgogne), Ferrán Valdez (Universidad Nacional Autónoma de México).

The meeting is centered on groups that arise in dynamical and geometric contexts, an area which has seen many exciting developments in the past five years. These groups appear in many contexts, ranging from mathematical physics, to dynamical systems, Lie theory and group theory, and ideas and techniques from each area have been fruitfully applied to the others. A major motivating question is to understand to what extent the algebraic structure of an abstract group constrains the possible action of this group on topological spaces. Answering this question involves understanding the structure of diffeomorphism and homeomorphism groups of manifolds. The goal of the conference is to gather people working on the subject (around 70 participants, with at least 20/30 young researchers). The main activities will be 3 minicourses. The subjects of the talks will cover a large list of topics.

3-7 october 2022: School on Dynamical Group Theory, Institut de Mathématiques de Bourgogne, Dijon

Organizers: Joaquín Brum (Universidad de la República), Nicolás Matte Bon (CNRS, Université de Lyon 1), Cristóbal Rivas (Universidad de Chile), Michele Triestino (Université de Bourgogne).

This event is mainly addressed to young researchers, to discover some recent directions in “dynamical group theory”, namely the study of transformation groups and the dynamics of their actions. There will be 3 mini-courses, by Sang-hyun Kim (KIAS), Anne Lonjou (Université Paris-Saclay), Emmanuel Militon (Université Côte d’Azur).

The Women in Math Committee (WiM) of the European Mathematical Society is organising an event called “EMS/WiM Day” within the initiative of “May 12th”, a celebration of women in Mathematics in memory of Maryam Mirzakhani.

The event consists of scientific talks (at the level of a Colloquium talk) of two distinguished speakers, which will take place online on Friday, 20 May 2022 with the following schedule:

• 14:45 CEST Welcome
• 15:00 CEST Tara Brendle (Glasgow University, UK)
• 16:00 CEST Tere M. Seara (UPC, Barcelona, Spain)

The titles and abstracts of the talks are given below.