Evénements

Mardi 19 janvier 2021 à 10h
Conférencier :  Frank Redig 
Duality for conservative interacting particle systems: an algebraic approach

Duality is a useful technique in the study of interacting particle systems. It allows to compute expectations of relevant observables in terms of a simpler, so-called dual process.
I will give an overview of recent developments in the theory of duality in this context. Guided by examples I will show the connection between intertwined representations of Lie algebras and duality of conservative interacting particle systems.
I will provide examples in non-equilibrium steady states, where both classical and orthogonal duality functions provide relevant information about the non-equilibrium steady state.
Based on joint work with C. Giardina, G. Carinci, S. Floreani and F. Sau.

Conférencier : Jovana ObradovicRésumé : Minimal models for graphs-related operadic algebras

« In 2016 Mazur and Rubin put forth a number of conjectures concerning the arithmetic distribution of modular symbols motivated by questions in Diophantine stability of elliptic curves. One of these conjectures predicts that modular symbols should follow a normal distribution and another one is concerned with the residual distribution of modular symbols. In this talk I will give an introduction to these conjectures and discuss different results related to them. In particular, I will present an automorphic methods for proving residual equidistribution of modular symbols and for computing the variance (with a surprising connection to perturbation theory). If time permits, I will explain how these results can be generalized to classes in the first cohomology of arithmetic subgroups of $\mathrm{SO}(n,1)$. »

Conférencier : Birgit Schörkhuber (Francfort)
Titre : Co-dimension one stable blowup and threshold phenomena for supercritical wave equations

Vendredi 5 février 202115:30   Olivier Graf (Université de Münster)    Le problème de Cauchy spatial-caractéristique avec courbure L2 en relativité générale.- Salle B405, bâtiment B, LAGA, Institut Galilée

Les Journées portes ouvertes de l’Université Sorbonne Paris Nord auront lieu le 6 mars prochain sous forme numérique.

LE L2TI participe au 9ème Workshop européen EUVIP qui se tiendra à Paris du 23 au 25 juin 2021 au 20, avenue George Sand- 93210, La Plaine St-Denis

9-th European Workshop on Visual Information Processing :
The 9th European Workshop on Visual Information Processing (EUVIP) will take place in Paris, France, 23-25 June 2021. EUVIP 2021 continues the series of workshops on visual information processing, modeling, and analysis methods inspired by the human and biological visual systems, with applications to image and video processing and communication. EUVIP 2021 offers experienced researchers an intellectually stimulating environment for discussion and interactions with their peers, encourages early career researchers to widen their experience and horizons and guides Ph.D. students towards new research directions. The flagship theme of this edition is « Image Quality Assessment and Enhancement (IQAE) in the context of medical diagnostic imaging ».

The conference program will feature oral and poster presentations, tutorials, challenge sessions,  and a panel discussion session. The Best Regular paper will be selected for an award. EUVIP 2021 also offers the Best Student paper and Challenges Session awards/prizes.

As for the previous EUVIP workshops, all the accepted regular papers in the proceedings are expected to be published in the IEEE Xplore. Furthermore, authors of selected articles will be invited to submit an extended and substantially improved version of the EUVIP 2021 paper to a Journal Special Issue, related to IQAE in the context of medical imaging and diagnosis. Topics of particular interest to EUVIP 2021 include, but are not limited to:

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