Arbre de Noël du GDR « Géométrie non-commutative »

Arbre de Noël du GDR »Géométrie non-commutative »La géométrie non-commutative, fondée par Alain Connes, est un domaine de recherche important des mathématiques actuelles. Le GDR « Géométrie Non-commutative » du CNRS regroupe l’ensemble des chercheurs français travaillant sur des thématiques en lien avec ce domaine. L’arbre de Noël, organisé par Amaury Freslon (LMO – Université Paris-Saclay) et co-organisé par Maria-Paula Gomez-Aparicio (Université Paris-Saclay), est la rencontre annuelle de ce GDR. La parole y est donnée aux jeunes chercheurs du domaine, doctorants et post-doctorants, qui peuvent ainsi présenter leurs travaux à la communauté. Quelques exposés de chercheurs confirmés complètent cette rencontre en offrant un panorama des évolutions actuelles.Conférenciers invités :Benjamin Anderson-Sackaney, Université de Caen-NormandieSara Azzali, Università di BariLéonard Cadilhac, Sorbonne UniversitéPurbayan Chakraborty, Université de Bourgogne-Franche-ComtéAlain Connes, IHESClément Dell’Aiera, ENS LyonAmine Marrakchi, ENS LyonPaul Meunier, KU LeuvenGilles Pisier, Sorbonne Université – Texas A&M UniversityArthur Troupel, Université Paris-CitéZhenguo Wei, Université de Bourgogne-Franche-ComtéXu Zhendong, Université de Bourgogne-Franche-ComtéKai Zeng, Université de Bourgogne-Franche-Comté

Combinatorics and Arithmetic for Physics: Special Days

Combinatorics and Arithmetic for Physics: special daysThe meeting’s focus is on questions of discrete mathematics and number theory with an emphasis on computability. Problems are drawn mainly from theoretical physics: renormalization, combinatorial physics, geometry, evolution equations (commutative and noncommutative), or related to its models, but not only. Computations, based on combinatorial structures (graphs, trees, words, automata, semirings, bases), or classical structures (operators, Hopf algebras, evolution equations, special functions, categories) are good candidates for computer-based implementation and experimentation.Organised by : Gérard H. E. DUCHAMP, Maxim KONTSEVICH, Gleb KOSHEVOY, Sergei NECHAEV, and Karol A. PENSON.Speakers:Cyril Banderier (CNRS, Univ. Paris Nord) Nicolas Behr (CNRS, Université Paris Cité, IRIF) Gérard H. E. Duchamp (LIPN, Université Paris Nord) Vladimir Fock (Strasbourg Univ.)Nihar Gargava (EPFL, Cambridge)Volker Genz (IBS CGP)Sasha Gorsky (IITP RAS) Darij Grinberg (Drexel University) Dimitry Gurevich (IITP, Moscou) Béa de Laporte (University of Cologne)Richard Kerner (LPTMC, Sorbonne Univ.) Maxim Kontsevich (IHES) Paul-André Melliès (CNRS, Université Paris Cité, IRIF) Frédéric Patras (CNRS, Univ. Côte d’Azur) Karol A. Penson (LPTMC, Sorbonne Univ.) Travis Scrimshaw (Hokkaido University) Thomas Simon (Laboratoire Paul Painlevé, Univ. Lille) Lauren Williams (Harvard University) Sergey Yurkevich (Univ. of Vienna & INRIA)Sponsors: IHESLPTMC (Univ. Paris 6)LIPN UMR CNRS-7030I.S.C.P. (UMI 2615 CNRS)

Homogeneous Dynamics and Geometry in Higher-Rank Lie Groups

Homogeneous Dynamics and Geometry in Higher-Rank Lie Groups   The goal of the workshop is to explore links between homogeneous dynamics and recent developments on infinite-covolume discrete subgroups of Lie groups, including images of Anosov representations and generalizations. There will be three minicourses and a dozen research talks. This workshop is organized by Martin Bridgeman (Boston College), Richard Canary (University of Michigan), Fanny Kassel (CNRS & IHES), Hee Oh (Yale University), Maria Beatrice Pozzetti (Universität Heidelberg), and Jean-François Quint (CNRS & Université de Bordeaux).Minicourses: Jean-François Quint (CNRS & Université de Bordeaux) – “Dynamics on Higher-rank Lie Groups” [3h] Tengren Zhang (National University of Singapore) – “Anosov Representations” [3h]Andrés Sambarino (CNRS & IMJ-PRG) & Minju Lee (University of Chicago) – “Recent Developments” [2+2h]Research Talks:Pierre-Louis Blayac (University of Michigan) León Carvajales (Universidad de la Republica, Montevideo) Nguyen-Thi Dang (Université Paris-Saclay) Sam Edwards (Durham University) François Labourie (Université Côte d’Azur) Sara Maloni (University of Virginia) Giuseppe Martone (Yale University) Wenyu Pan (University of Toronto) Rafael Potrie (Universidad de la Republica, Montevideo) Pratyush Sarkar (UC San Diego) Andrew Zimmer (University of Wisconsin, Madison)      

Life, Structure and Cognition (LSC)

 

LSC, which stands for Life, Structure, and Cognition, is an initiative with the aim of learning about the latest advancements and of exploring the modalities for cooperative progress between Biology and Artificial Intelligence, as is already starting to take place under our eyes. The goal is to investigate how biological systems evolved cognitive functions, using AI both as a concept toolbox and as a tool, and in turn, investigate how biological systems can serve as models to understand and stimulate new progress in AI.

The idea of LSC is an annual evaluation, expert discussion, and lecture series on the key topics and latest advancements in these directions, thus the Life and Cognition components of LSC. Structure in this LSC epithet refers to Mathematics and how it might and must help process and formalize aspects of these advancements. 

LSC 2022 Webinars

LSC 2022 Meeting

ORGANIZING COMMITTEE:

– Yves Barral (ETH Zürich)
– Mikhail Gromov (IHES, Université Paris-Saclay)
– Robert Penner (IHES, Université Paris-Saclay)
– Vasily Pestun (IHES, Université Paris-Saclay)

Stay in touch, subscribe to our mailing list.

Workshop Schlumberger : Types dépendants et Formalisation des mathématiques

Workshop Schlumberger :
Types dépendants et Formalisation des mathématiques

Le formalisme du lambda-calcul typé et des types dépendants fournit un système de notation non seulement pour les objets mathématiques (comme c’était le cas pour le formalisme utilisé par Bourbaki), mais également pour les preuves mathématiques. Ce formalisme est assez précis pour être représenté sur ordinateurs, et plusieurs systèmes interactifs de verification de preuves se fondent sur cette approche.

Ce sujet a connu ces 15 dernières  années des développements spectaculaires : des preuves non triviales ont ainsi été formalisées, comme celle du théorème des 4 couleurs, ou le théorème de Feit-Thompson, ou plus récemment, un lemme complexe de P. Scholze (liquid tensor experiment).

Dans une autre direction, un rapprochement inattendu entre ce formalisme et la notion de topos d’ordre supérieur a été mis en évidence.

Organisée par Thierry Coquand, titulaire de la chaire Schlumberger pour les sciences mathématiques à l’IHES, le but de ce cette journée est de faire le point sur ces développements récents, et d’explorer les limitations et possibilités de cette approche.

Conférenciers invités :

Benedikt Ahrens, Delft University of Technology
Anthony Bordg, University of Cambridge
Cyril Cohen, INRIA
Georges Gonthier, INRIA
Assia Mahboubi, INRIA
Patrick Massot, LMO, Université Paris-Saclay

Mikefest: A conference in honor of Michael Douglas’ 60th birthday

Organized by Costas Bachas (LPENS), Semyon Klevtsov (Univ. Strasbourg), Nikita Nekrasov (Simons Center for Geometry and Physics & Stony Brook) and Emmanuel Ullmo (IHES), the « MikeFest: a conference in honor of Michael Douglas » will take place from May 9 to 13, 2022.

Registration until: May 3, 2022.

We are organizing a conference at the IHES on the occasion of Michael R. Douglas’ 60th birthday.

Mike has a long association with IHES, as a visiting professor in 2000-2008 (Louis Michel Chair), by leading the US-based fundraising effort, and as a president and chairman of the Friends of IHES in 2013-2021.

The conference will cover the topics on which Mike has worked and made profound contributions: string theory, matrix models, physical mathematics, and machine learning.

Covid-19 regulations: seats in the conference center are limited to 70 people. The conference will also be available via Zoom.

Invited speakers:

Vijay Balasubramanian, Univ. of Pennsylvania
Alexander Belavin, Independent Univ. Moscow (TBC)
Ilka Brunner, Univ. München
Alain Connes, IHES & Collège de France
Frederik Denef, Columbia Univ.
Bartomeu Fiol, Univ. de Barcelona
Jaume Gomis, Perimeter Institute (TBC)
Sasha Gorsky, IITP RAS, MIPT
Chris Hull, Imperial College
Shamit Kachru, Stanford Univ.
Volodya Kazakov, LPENS
Maxim Kontsevich, IHES
Patrick Massot, LMO – Univ. Paris-Saclay
Luca Mazzucato*, Univ. of Oregon
David McAllester, Toyota Tech. Inst. Chicago (TTIC)*
Liam McAllister, Cornell Univ.
Greg Moore*, Rutgers Univ.
Rémi Monasson, LPENS
Eliezer Rabinovici, Hebrew Univ. of Jerusalem
John Schwarz, CALTECH
Nathan Seiberg*, IAS
Steve Shenker*, Stanford Univ.
Eva Silverstein*, Stanford Univ.
Christian Szegedy, Google Research
Washington Taylor*, MIT
Alessandro Tomasiello, Univ. Degli Studi Di Milano Bicocca
Josef Urban, CIIRC
Steve Zelditch*, Northwestern Univ.

* remote talks

Workshop on Quantum Geometry

Workshop on Quantum Geometry

The main topic of this conference will be some recent progress in enumerative geometry, emphasizing its connection with mathematical physics and quantization. There will be a mini-series of lectures by Pierrick Bousseau and Hülya Argüz on their recent work (also joint with Pandharipande-Zvonkine), together with research seminars by other early-career speakers working on similar topics.

This event will be held at IHES, Bures-sur-Yvette, and is open to all interested researchers. Ph.D. students and postdoctoral fellows are especially welcome to participate.

 

Registration is free and open until April 21, 2022.

Note that the conferences will take place from 2:00 pm to 6:00 pm every day.

Organised by : Veronica Fantini (IHES) & Alex Takeda (IHES)

Invited speakers:

Nezhla Aghaei (SDU/QM Center)
Hülya Argüz (IST Austria)
Anna Barbieri (University of Milano Statale)
Pierrick Bousseau (ETH Zurich)
Pierre Descombes (Sorbonne Université UPMC)
Maxime Fairon (University of Glasgow)
Elba Garcia-Failde (IMJ-PRG)
Alessandro Giacchetto (IPhT)
Oscar Kivinen (EPFL)
Joshua Lam (IHES)
Mingkun Liu (IMJ-PRG)
Riccardo Ontani (SISSA)
Gabriele Rembado (Hausdorff Centre for Mathematics, Bonn)
Alexander Soibelman (IHES)

Journée Statistique et Informatique pour la Science des Données à Paris Saclay

Note: The conference will be held entirely on video-conference

The aim of this workshop is to bring together mathematicians and computer scientists around some talks on recent results from statistics, machine learning and more generally data science research. Various topics in machine learning, optimization, deep learning, optimal transport, inverse problems, statistics and problems of scientific reproducibility will be presented.

Registration is free and open to January 20, 2022.

Organised by: Gilles Blanchard (LMO) and Charles Soussen (L2S)

Invited speakers:

Rémi Flamary (CMAP/Ecole polytechnique)
Isabelle Guyon (LISN/INRIA Tau)
Olga Klopp (CREST/ESSEC business school)
Thomas Moreau (INRIA Paris-Saclay)
Pablo Piantanida (L2S/CentraleSupélec)
Florence Tupin (LTCI/Télécom Paris)

     

Summer School on the Langlands Program

2022 IHES SUMMER SCHOOL

REMINDER: the participants of the Summer School who will come in person have been selected among a lot of applicants. Others, who were not selected but put on a waiting list won’t participate in person because the capacity of the conference center has been reached.

Therefore, if you are interested in participating but did not apply or haven’t been selected or invited to come, please register to participate through Zoom and don’t come to IHES. There are no more seats available and those who did apply and were selected through the application process have the priority to participate in person.

Thank you for your understanding and cooperation!

************

Organizing Committee: Pierre-Henri Chaudouard (IMJ-PRG),  Wee Teck Gan (National Univ. of Singapore), Tasho Kaletha (Univ. of Michigan), Yiannis Sakellaridis (Johns Hopkins Univ.)

Scientific Committee: Gérard Laumon (Univ. Paris-Sud), Colette Mœglin (IMJ-PRG), Bảo Châu NGÔ (Chicago Univ.), Jean-Loup Waldspurger (IMJ-PRG)

The « Summer School on the Langlands Program » will be held at the Institut des Hautes Etudes Scientifiques (IHES) from 11 to 29 July. IHES is located in Bures-sur-Yvette, south of Paris (40 minutes by train from Paris).

This school is open to everybody but intended primarily for young participants, including Ph.D. students and postdoctoral fellows.

It has been almost 45 years since the influential summer school held in Corvallis, Oregon in 1977 brought together the leading experts of the Langlands program and defined the research agenda in this area for subsequent decades, at the same time inspiring and enabling several generations of young researchers to join in this exciting journey. This 3-week IHES summer school aims to do the same for the next phase of development in the Langlands program.

Recent decades have brought tremendous progress on the project of endoscopy, the extension of the Langlands program to the “relative” setting of spherical varieties and other related spaces, numerous successful “explicit” methods (such as the theta correspondence) to construct functoriality, novel ideas “beyond endoscopy”, and arithmetic applications of both the theta correspondence and the relative trace formula to the study of special cycles and their generating series. Ideas from the geometric Langlands program have begun impacting and enriching the classical Langlands program in significant ways. In particular, the idea that the “space of Langlands parameters” is not just a set, but a (putative) geometric space, can be used to organize a lot of developments around reciprocity, including the Taylor–Wiles method, derived structures, the Langlands correspondence over function fields, and the geometrization of the local Langlands conjecture.

The summer school will attempt to bring these exciting new directions together and explore their interactions.

SPEAKERS:

BEN-ZVI David (UT Austin)
BEUZART-PLESSIS Raphaël (Univ. Aix-Marseille)
CARAIANI Ana (Imperial College)
CHAUDOUARD Pierre-Henri (IMJ-PRG)
DAT Jean-François (IMJ-PRG)
EMERTON Matthew (Chicago Univ.)
FARGUES Laurent (IMJ-PRG)
FENG Tony (MIT)
FINTZEN Jessica (Duke Univ. & Cambridge Univ.)
GAN Wee Teck (National Univ. of Singapore)
GEE Toby (Imperial College)
HARRIS Michael (Columbia Univ.)
HELLMANN Eugen (Univ. Münster)
KALETHA Tasho (Univ. of Michigan)
LAPID Erez (Weizmann Inst.)
LI Chao (Columbia Univ.)
MASON-BROWN Lucas (Univ. of Oxford)
MOREL Sophie (ENS Lyon)
NGÔ Bảo Châu (Chicago Univ.)
PRASAD Dipendra (IIT Bombay)
RASKIN Sam (Univ. of Texas)
SAKELLARIDIS Yiannis (Johns Hopkins Univ.)
SCHOLZE Peter (Univ. Bonn)
SHIN Sug Woo  (UC Berkeley)
TAÏBI Olivier (ENS Lyon)
VENKATESH Akshay (IAS)
WEINSTEIN Jared (Boston Univ.)
XUE Cong (IMJ-PRG)
YUN Zhiwei (MIT)
ZHANG Wei (MIT)
ZHU Xinwen (CALTECH)
 

This is an IHES Summer School, organized in partnership with the Clay Mathematical Institute, the National Science Foundation, the support of the Société Générale, the FMJH and Qube RT.

 

Journée Statistique et Informatique pour la Science des Données à Paris Saclay

The aim of this workshop is to bring together mathematicians and computer scientists around some talks on recent results from statistics, machine learning and more generally data science research. Various topics in machine learning, optimization, deep learning, optimal transport, inverse problems, statistics and problems of scientific reproducibility will be presented.

Registration is free and open to February 2, 2021.

Organised by: Thanh Mai PHAM NGOC (LMO) and Charles SOUSSEN (L2S)

Note: The conference will be held entirely on video-conference.

Invited speakers:

Guillaume Charpiat (LRI)
Lenaïc Chizat (LMO)
Emilie Chouzenoux (CVN)
Agnès Desolneux (Centre Borelli)
Gaël Richard (Télécom Paris)
Gaël Varoquaux (INRIA Parietal)

Combinatorics and Arithmetic for Physics: special days

Combinatorics and Arithmetic for Physics: special days

The meeting’s focus is on questions of discrete mathematics and number theory with an emphasis on computability. Problems are drawn mainly from theoretical physics (renormalisation, combinatorial physics, geometry, evolution equations, noncommutative differential equations) or related to its models, but not only.

Computation, based on combinatorial structures (graphs,trees, words, automata, semirings, bases) or classic structures (operators, Hopf algebras, evolution equations, special functions, categories) are good candidates for computer-based implementation and experimentation. »

Organised by : Gérard H.E. Duchamp, Maxim Kontsevich, Gleb Koshevoy et Vincel Hoang Ngoc Minh

The conference will be held in a blended form, with talks given on site at IHES and others remotely through Zoom.

All the talks may be followed either online or on site.

Covid-19 regulations: for those who will attend in person, masks will be mandatory and we will ask them to provide a health pass upon their arrival.

Sponsors:

GDR Renorm

LIPN et FR Math-STIC (Univ-Paris 13)

Geometry in non-positive curvature and Kähler Groups

—————————————– IMPORTANT INFORMATION ——————————————

Because of the current pandemic, we do not know exactly what form the conference will take. Two options are currently possible
– a fully online event.
– an hybrid event. In this configuration the conference will take place at the IHES, France. All the talks will be broadcast online

———————————————————————————————————————-

A 3-day conference on recent developments in the geometry of groups with hyperbolic features, Kähler geometry, and their interactions. This event is also be the occasion to celebrate the 60th birthday of Thomas Delzant, whose contributions to these fields have had a large influence in the development of geometric group theory and the study of Kähler groups using hyperbolic techniques.

Updated information can be found on the web page of the conference

Organised by : Rémi Coulon, François Dahmani and Alexandre Martin

Confirmed speakers :
Goulnara Arzhantseva
Martin Bridson
Serge Cantat
Cornelia Drutu
Misha Gromov
Vincent Guirardel
Panagiotis Papasoglu
Pierre Py
Zlil Sela