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Welcome to MathMeetings.net! This is a list for research mathematics conferences, workshops, summer schools, etc. Anyone at all is welcome to add announcements.
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Updates 201907
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Upcoming Meetings
January 2020
KTheory, Algebraic Cycles and Motivic Homotopy Theory
Meeting Type: thematic research program
Contact: see conference website
Description
The programme will focus on the areas of Algebraic Ktheory, Algebraic Cycles and Motivic Homotopy Theory. These are fields at the heart of studying algebraic varieties from a cohomological point of view, which have applications to several other fields like Arithmetic Geometry, Hodge theory and Mathematical Physics.
It was in the 1960s that Grothendieck first observed that the various cohomology theories for algebraic varieties shared common properties, which led him to explain the underlying kinship of such cohomology theories in terms of a universal motivic cohomology theory of algebraic varieties. The theory of Algebraic Cycles, Higher Algebraic Ktheory, and Motivic Homotopy Theory are modern versions of Grothendieck's legacy. In recent years it has seen some spectacular developments, on which we want to build further.
The programme will also specifically explore the connections between the following areas:
Algebraic Ktheory, Motivic Cohomology, and Motivic Homotopy Theory;
Hodge theory, Periods, Regulators, and Arithmetic Geometry;
Mathematical Physics.
For this, we shall bring together mathematicians working on different aspects of this broad area for extended periods of time, promoting exchange of ideas and stimulating further progress.
During the programme there will be four workshops. At the very beginning, there will be a workshop aimed at giving a younger generation of mathematicians an overview of and introduction to this interesting, but broad area. Later there will be a workshop for each of the three areas listed above, aimed at the latest developments and applications of that area.
Lattices: Algorithms, Complexity and Cryptography
Meeting Type: thematic program
Contact: see conference website
Description
The study of integer lattices serves as a bridge between number theory and geometry and has for centuries received the attention of illustrious mathematicians including Lagrange, Gauss, Dirichlet, Hermite and Minkowski. In computer science, lattices made a grand appearance in 1982 with the celebrated work of Lenstra, Lenstra and LovÃ¡sz, who developed the celebrated LLL algorithm to find short vectors in integer lattices. The role of lattices in cryptography has been equally, if not more, revolutionary and dramatic, playing first a destructive role as a potent tool for breaking cryptosystems, and later as a new way to realize powerful and gamechanging notions such as fully homomorphic encryption. These exciting developments over the last two decades have taken us on a journey through such diverse areas as quantum computation, learning theory, Fourier analysis and algebraic number theory.
We stand today at a turning point in the study of lattices. The promise of practical latticebased cryptosystems together with their apparent quantumresistance is generating a tremendous amount of interest in deploying these schemes at internet scale. However, before lattice cryptography goes live, we need major advances in understanding the hardness of lattice problems that underlie the security of these cryptosystems. Significant, groundbreaking progress on these questions requires a concerted effort by researchers from many different areas: (algebraic) number theory, (quantum) algorithms, optimization, cryptography and coding theory.
The goal of the proposed special semester is to bring together experts in these areas in order to attack some of the main outstanding open questions, and to discover new connections between lattices, computer science, and mathematics. The need to thoroughly understand the computational landscape and cryptographic capabilities of lattice problems is greater now than ever, given the possibility that secure communication on the internet and secure collaboration on the cloud might soon be powered by lattices.
VaNTAGe: virtual seminar on open conjectures in number theory and arithmetic geometry.
Meeting Type: conference
Contact: Rachel Pries
Description
VANTAGe is a new virtual seminar on open conjectures in number theory and arithmetic geometry (NT&AG). The seminar will provide open access to world class mathematics, with a focus on progress on unsolved problems in NT&AG. The purpose of the seminar is to provide a viable way for researchers to be involved with cuttingedge research in NT&AG without the expense and environmental impact of travel. Another aim of the seminar is to advance understanding on the most exciting open problems in this field. As the goal of the seminar is to build communication among researchers developing the fields of NT&AG, we expect speakers and participants to uphold the highest standards for clear exposition and respectful interactions.
This first open conjecture for the seminar is about Class groups of number fields. The lectures for this topic will be on 1/21, 2/4, 2/18, 3/3 at 1 ET = 12 CT = 11 MT = 10 PT.
February 2020
Southern California Number Theory Day
Meeting Type: conference
Contact: see conference website
Description
Invited Speakers: Chao Li (Columbia University), Raphaël Rouquier (UCLA), John Voight (Dartmouth College), Melanie Matchett Wood (UC Berkeley), and Daxin Xu (CalTech).
March 2020
Equivariant Stable Homotopy Theory and padic Hodge Theory
Meeting Type: conference
Contact: see conference website
Description
The Banff International Research Station will host the "Equivariant Stable Homotopy Theory and padic Hodge Theory" workshop in Banff from March 1 to March 06, 2020.
Algebraic topology has had a long and fruitful collaboration with algebraic geometry, with each providing techniques and problems to the other. This workshop is aimed at an exciting, evolving incarnation of this story: applications of equivariant stable homotopy to number theory. Recent work on the foundations of equivariant stable homotopy theory (starting with the HillHopkinsRavenel work on the Kervaire invariant one problem) and Lurie's development of the foundations of ''derived algebraic geometry'' now allows systematic exploration and organization of ''equivariant derived algebraic geometry''. This allows us to do ordinary algebraic geometry in commutative ring spectra.
New foundations in this area have been spectacularly applied to phenomena seen in the trace methods approach to computing algebraic K theory. For instance, although the theory of equivariant commutative ring spectra was described decades ago, few of the subtleties in the theory were understood or explored. The modern approaches to computing algebraic Kgroups step through equivariant commutative ring spectra via the natural S1action on topological Hochschild homology. Ongoing and transformative work by BhattMorrowScholze in padic Hodge theory uses cyclotomic spectra and therefore subtle equivariant information. This workshop, at the vanguard of work in this area, seeks to bring together experts in algebraic topology, (derived) algebraic geometry, and number theory to explore these exciting new connections.
Arizona Winter School 2020: Nonabelian Chabauty
Meeting Type: winter school
Contact: see conference website
Description
Topics in Category Theory: A Spring School
Meeting Type: Spring School
Contact: Guy Boyde (Southampton), Aryan Ghobadi (QMUL), Emily Roff (Edinburgh)
Description
This Spring School will gather together PhD students and junior researchers who use categorytheoretic ideas or techniques in their research. It will provide a forum to learn about important themes in contemporary category theory, both from experts and from each other.
Three invited speakers will each present a threehour minicourse, accessible to nonspecialists, introducing an area of active research. There will also be short talks contributed by PhD students and postdocs, and a poster session.
The focus of the Spring School is on aspects of pure category theory as they interact with research in other areas of algebra, geometry, topology and logic. Any "categorical thinker"  that is, any mathematician whose work makes use of categorical ideas  is welcome to participate.
Arithmetic Algebraic Geometry
Meeting Type: conference
Contact: see conference website
Description
Higher Dimensional Algebraic GeometryAn event in honor of Prof. Shokurov's 70th Birthday
Meeting Type: conference
Contact: Jingjun Han
Description
Organizing Committee: Caucher Birkar (University of Cambridge), Christopher Hacon (the University of Utah), Chenyang Xu (M.I.T.) with help from Jingjun Han (Johns Hopkins University).
Principal Japanese Organizers: Keiji Oguiso (University of Tokyo), Shunsuke Takagi (University of Tokyo).
This one year long program at Johns Hopkins University will feature 3 graduatelevel courses, one conference, three Kempf lectures, three Monroe H. Martin lectures, several colloquiums and weekly seminars.
Tentative schedule for the conference: March 1622, 2020.
AGNES: Algebraic Geometry Northeastern Series
Meeting Type: conference
Contact: see conference website
Description
Madison Moduli Weekend
Meeting Type: Conference
Contact: Brandon Boggess, Soumya Sankar
Description
Conference on moduli spaces.
Algebraic Questions in Random Integral Matrices
Meeting Type: conference
Contact: see conference website
Description
Arithmetic geometry, cycles, Hodge theory, regulators, periods and heights
Meeting Type: conference
Contact: see conference website
Description
April 2020
Western Algebraic Geometry Symposium
Meeting Type: conference
Contact: see conference website
Description
Periods, Motives and Differential equations: between Arithmetic and Geometry
Meeting Type: conference
Contact: https://periodes.sciencesconf.org/resource/page/id/1
Description
Periods occur in various branches of mathematics and as the title of our conference indicates, their study intertwines arithmetic, Diophantine analysis, differential equations, and algebraic geometry. Many interesting results have been proved in recent years and many challenging problems on periods are still open. The aim of our conference is to bring together specialists who cover all these different points of view and their ramifications, with special attention towards possible applications to broader areas of the techniques developed in the study of periods and their realizations.
Yves André has contributed in many ways to this ongoing adventure and this conference will not only be the opportunity to listen to a broad range of recent developments in mathematics around the topic of periods, but also to celebrate his 60th birthday.
Georgia Algebraic Geometry Symposium
Meeting Type: conference
Contact: David ZureickBrown
Description
The Georgia Algebraic Geometry Symposium is a conference series, jointly organized by the University of Georgia, Emory University and Georgia Tech.
Number theory days in Regensburg – Special values of Lfunctions
Meeting Type: conference
Contact: see conference website
Description
The general topic of this conference is number theory with a focus on special values of Lfunctions. Please consult the web page for further information.
May 2020
The Arithmetic of the Langlands Program
Meeting Type: conference
Contact: see conference website
Description
SwinnertonDyer Memorial
Meeting Type: conference
Contact: see conference website
Description
We are organising a three day meeting in honour of Professor Sir PeterSwinnertonDyer who died in December 2018 at the age of 91.
SwinnertonDyer was one of the most influential number theorists of his generation worldwide. He is probably best known for the famous conjecture of Birch and SwinnertonDyer (one of the Millenium Clay Maths Problems), which relates the arithmetic of elliptic curves to the value of its HasseWeil Lfunction. This conjecture gave rise to a huge field of research relating special values of Lfunctions to arithmetic data. SwinnertonDyer was also one of founding figures in the arithmetic of surfaces and higherdimensional varieties, such as localtoglobal principles for rational points over number fields. He obtained fundamental results for conic bundles and cubic surfaces, and started the research of rational points on surfaces fibred into elliptic curves using completely new methods.
The meeting aims to celebrate the tremendous and widereaching contributions to mathematics of the late Sir Peter SwinnertonDyer.
In the early years of the Newton Institute, SwinnertonDyer served as honorary executive director under Michael Atiyah.
Speakers:
Brian Birch
Martin Bright
John Coates
Lilian Matthiesen
Alexei Skorobogatov
Rodolfo Venerucci
Claire Voisin
Andrew Wiles
Olivier Wittenberg
Sarah Zerbes
Henri Darmon
Arithmetic Geometry in Moscow
Meeting Type: conference
Contact: see conference website
Description
Summer School: The Arithmetic of the Langlands Program
Meeting Type: summer school
Contact: see conference website
Description
This school provides an introduction to some of the main topics of the trimester program. It is mainly directed at PhD students and junior researchers.
The following speakers will give courses on the following topics:
 ArthurCesar le Bras, Gabriel Dospinescu: padic geometry
 George Boxer, Vincent Pilloni: Higher Hida theory
 Patrick Allen, James Newton: Automorphy lifting
 Eva Viehmann, Cong Xue: Shtukas
 Sophiel Morel, Timo Richarz: Geometric Satake
Ominimality and its applications in Diophantine Geometry and Hodge Theory
Meeting Type: School
Contact: Gal Binyamini, Itay Kaplan, Kobi Peterzil, Jonathan Pila, Jacob Tsimerman
Description
In recent years a remarkable new link has been unfolding between ominimality (a branch of model theory), on the one hand, and Diophantine geometry and Hodge theory on the other. It has been discovered that some central objects of study in the latter two areas, such as theta functions and period maps, can be studied within the structure R_{an,exp}, an ominimal structure that has long been an object of investigation in ominimal geometry. A combination of ideas from these three areas has led to resolutions of several outstanding conjectures in Diophantine geometry and, more recently, in Hodge theory.
The goal of this workshop will be to introduce these three different areas and their fruitful interactions, and to serve as a bridge between experts already working in some of these fields. The schedule will consist of tutorial minicourses on the three main topics (ominimality, Diophantine geometry and Hodge theory) with a focus on the areas where they intersect; and more advanced research talks by experts in each of these areas.
Foundations and Perspectives of Anabelian Geometry
Meeting Type: conference
Contact: see conference website
Description
This workshop is one of the workshops of a special RIMS year "Expanding Horizons of Interuniversal TeichmÃ¼ller Theory". The workshop will review fundamental developments in several branches of anabelian geometry, as well as report on recent developments. The list of speakers includes major contributors to anabelian geometry and birational anabelian geometry. Anabelian geometry, together with higher class field theory and the Langlands correspondences, is one of three generalisations of class field theory.
Fifth International Workshop on Zeta Functions in Algebra and Geometry
Meeting Type: conference
Contact: see conference website
Description
Relative Aspects of the Langlands Program, LFunctions and Beyond Endoscopy
Meeting Type: conference
Contact: see conference website
Description
The Langlands program and the theory of automorphic forms are fundamental subjects of modern number theory. Langlands’ principle of functoriality, and the notion of automorphicLfunctions, are central pillars of this area. After more than forty years of development, andmany celebrated achievements, large parts of this program are still open, and retain their mystery. The theory of endoscopy, a particular but very important special case of functoriality, has attracted much effort in the past thirty years. This has met with great success, leading to the proof of the Fundamental Lemma by Ngô, and the endoscopic classification of automorphic representations of classical groups by Arthur. Going beyond these remarkable achievements requires new techniques and ideas ; in the past few years, exciting directions have started to emerge, which may renew our vision of the whole subject.
This brings us to the three main topics of this conference : (1) The "relative Langlands program" is a very appealing generalization of the classical Langlands program to certain homogeneous spaces (mainly spherical ones). It relates period integrals of automorphic forms to Langlands functoriality or special values of Lfunctions.Remarkable progress on the GanGrossPrasad and IchinoIkeda conjectures has been made(by Waldspurger, W. Zhang, and others). With the work of Sakellaridis and Venkatesh, this subject has reached a new stage ; we now have a rigorous notion of "relative functoriality",with very promising perspectives. A central tool in all these questions is Jacquet’s relative trace formula, whose reach and theoretical context remain to be fully investigated. (2) Relations between special values of (higher) derivatives of Lfunctions and height pairings (between special cycles on Shimura varieties and Drinfeld’s Shtuka stacks) will also be part of the program. This includes arithmetic versions of the GanGrossPrasad conjectures, which generalize the celebrated GrossZagier formula. In the function field case, striking recent results of Yun and W. Zhang give geometric meaning to higher central derivatives of certain Lfunctions. (3) Ways of going beyond endoscopy, and proving new cases of functoriality. This includes Langlands’ original idea of using the stable trace formula to study poles of Lfunctions ; but also other related proposals that have attracted lot of recent attention, such as the BravermanKazhdan approach through nonstandard Poisson summation formulas, or new methods to go "beyond endoscopy in a relative sense”, as developed by Sakellaridis.
This conference aims to gather leading experts in this vital area of mathematics (including several researchers from AixMarseille University) ; to attain a stateoftheart overview of the different directions that are being actively pursued ; and to promote collaboration and the exchange of ideas between those approaches.
Algebraic Geometry in Roma Tre, on the occasion of Sandro Verra's 70th birthday
Meeting Type: conference
Contact: Valerio Talamanca
Description
Speakers
Ingrid Bauer
(Universität Bayreuth) 
Alessio Corti
(Imperial College London) 
Kieran O'Grady
(Sapienza Università di Roma) 
Orsola Tommasi
(Università di Padova) 
Arnaud Beauville
(Université de Nice) 
Olivier Debarre
(Université Paris Diderot) 
Angela Ortega
(Humboldt Universität zu Berlin) 
Yuri Tschinkel
(New York University) 
Cinzia Casagrande
(Università di Torino) 
Igor Dolgachev
(The University of Michigan) 
Rahul Pandharipande
(ETH Zürich) 
Bert Van Geemen
(Università di Milano) 
Fabrizio Catanese (Universität Bayreuth) 
Gavril Farkas
(Humboldt Universität zu Berlin) 
Gian Pietro Pirola
(Università di Pavia) 

Ciro Ciliberto (Università di Roma Tor Vergata) 
Shigeru Mukai
(RIMS, Kyoto University) 
Francesco Russo
(Università di Catania) 
Organizing CommitteeAndrea Bruno, Lucia Caporaso, Giulio Codogni, Angelo Felice Lopez, Margarida Melo, Francesca Merola,Massimiliano Pontecorvo, Edoardo Sernesi, Paola Supino, Valerio Talamanca, Filippo Viviani 
Archimedean and nonArchimedean Spaces
Meeting Type: workshop
Contact: Jérôme Poineau
Description
In the recent years, new connections have emerged between complex algebraic varieties and nonarchimedean spaces. They could be made precise by relying on the theory of Berkovich spaces and tropical geometry. The aim of the workshop is to present the latest techniques as well as several applications.
June 2020
Arithmetic Geometry, Number Theory, and Computation III
Meeting Type: conference
Contact: Andrew V. Sutherland
Description
Advances in Mixed Characteristic Commutative Algebra and Geometric Connections
Meeting Type: conference
Contact: see conference website
Description
The Casa MatemÃ¡tica Oaxaca (CMO) will host the "Advances in Mixed Characteristic Commutative Algebra and Geometric Connections" workshop in Oaxaca, from June 7 to June 12, 2020.
One of the big ideas in modern mathematics is that integers (like 1, 2, 3, 4, 5, ...) in many formal ways behave similarly to polynomial equations (like y = x^2, which defines the parabola). Frequently, and perhaps surprisingly, many questions in mathematics are easier to study for polynomials than for integers. Hence intuition and results for polynomials can tell us about the integers. Commutative algebra lives at the intersection of both perspectives, and one fundamental object of study is polynomials with integer coefficients, this is called the mixed characteristic case. Recently, Yves Andre proved a long standing open conjecture in commutative algebra in this mixed characteristic setting, relying on constructions of Scholze (and then Bhatt gave a simplified proof of the same conjecture).
This workshop aims to foster and discuss these and other recent tools, to study some remaining open problems in mixed characteristic. The workshop will bring together a diverse group of researchers from different fields, such as commutative algebra, algebraic geometry, and number theory.
Analytic and Geometric Number Theory
Meeting Type: Conference
Contact: Daniel Loughran
Description
This conference is part of the celebration of the recent creation of the new Number Theory group at the University of Bath.
It will revolve around topics in analytic number theory, algebraic number theory, and algebraic geometry, related to the study of Diophantine equations.
Tropical Geometry, Berkovich Spaces, Arithmetic DModules and padic Local Systems
Meeting Type: Workshop
Contact: Andrea Pulita, Ambrus Pal
Description
With this workshop we would like to promote the interaction between the following five fields:
 Berkovich spaces,
 Tropical geometry,
 padic differential equations,
 Arithmetic Dmodules and representations of padic Lie groups,
 Arithmetic applications of padic local systems.
While the first two are already tightly linked, the role of Berkovich spaces in the last 3 topics is only emerging and within this, the role of tropical geometry has not yet been explored. More generally, we consider this conference to be a good opportunity to study new techniques recently introduced into the field. We are convinced that each of these areas has plenty of potential and that a fruitful interaction between them might nourish their development. The aim of the conference is precisely to give leading experts in these each of these domains the opportunity to meet, present their last results and open challenges, and encourage an exchange that will drive forward these exciting and rapidly developing subjects.
A poster session is planned. Students are welcome to submit posters.
Foundations of Computational Mathematics (FoCM) 2020
Meeting Type: conference
Contact: see conference website
Description
NonArchimedean Geometry Techniques in Mirror Symmetry
Meeting Type: masterclass
Contact: see conference website
Description
A weeklong course designed for PhD students in nearby fields.
Speakers: Johannes Nicaise and Tony Yue Yu.
Last day to register: April 15.
Combinatorial Anabelian Geometry and Related Topics
Meeting Type: conference
Contact: see conference website
Description
Combinatorial anabelian geometry concerns the reconstruction of scheme or ringtheoretic objects from more primitive combinatorial constituent data. In this sense, it is closely philosophically related to interuniversal Teichmüller theory.
The purpose of the present workshop is to expose fundamental, introductory aspects of combinatorial anabelian geometry, as well as more recent developments related to the GrothendieckTeichmüller group and the absolute Galois groups of number fields and mixedcharacteristic local fields.
The workshop will also treat results concerning the "resolution of nonsingularities" of hyperbolic curves over mixedcharacteristic local fields, such results are closely related to combinatorial anabelian geometry over mixedcharacteristic local fields.
Resolution of singularities, valuation theory and related topics
Meeting Type: conference
Contact: see conference website
Description
The subject of this meeting covers valuation theory and resolution of singularities, along with some topics that are closely related like the theory of singularities of vector fields, problems concerning arc spaces or the PierceBirkhoff Conjecture.
It is our aim to gather together researchers on these transversal subjects in order to strengthen interdisciplinarity between different thematics, to contribute to build a community of researchers working on these problems, to develop new research projects, and to support new collaborations.
Fourteenth Algorithmic Number Theory Symposium, ANTSXIV
Meeting Type: conference
Contact: see conference website
Description
The ANTS meetings, held biannually since 1994, are the premier international forum for the presentation of new research in computational number theory and its applications. They are devoted to algorithmic aspects of number theory, including elementary number theory, algebraic number theory, analytic number theory, geometry of numbers, algebraic geometry, finite fields, and cryptography.
July 2020
Motivic, Equivariant and Noncommutative Homotopy Theory
Meeting Type: Summer School
Contact: Aravind Asok, Frédéric Déglise, Grigory Garkusha, Paul Arne Østvær
Description
The lecture series and research talks at the IHES Summer School will focus on presenting the latest developments in topics related to categories of motives, calculational and foundational aspects of motivic and equivariant homotopy theory, and the generalisations of these tools and techniques in the setting of noncommutative geometry.
Local Langlands and padic methods (in honour of JeanMarc Fontaine)
Meeting Type: conference
Contact: see conference website
Description
This conference will be on various aspects of the local Langlands correspondence over padic fields and methods from padic Hodge theory. Topics will include the usual local Langlands correspondence, the padic local Langlands correspondence and the relation to coherent sheaves on spaces of Galois representations, and the geometry and cohomology of local Shimura varieties.
Arithmetic Geometry
Meeting Type: conference
Contact: see conference website
Description
ISSAC: International Symposium on Symbolic and Algebraic Computation
Meeting Type: conference
Contact: see conference website
Description
The International Symposium on Symbolic and Algebraic Computation (ISSAC) is the premier conference for research in symbolic computation and computer algebra. ISSAC 2020 will be the 45th meeting in the series, which started in 1966 and has been held annually since 1981. The conference presents a range of invited speakers, tutorials, poster sessions, software demonstrations and vendor exhibits with a centerpiece of contributed research papers.
Arithmetic statistics and localglobal principles
Meeting Type: conference
Contact: see conference website
Description
The principal aim is to bring together leading researchers interested in the quantitative arithmetic of higherdimensional varieties on the one hand, and those working on the statistics of algebraic number fields and elliptic curves on the other hand. These two areas have operated more or less independently over the last twenty years, but their borders share an increasingly rich seam of mathematics.
Higher Dimensional Geometry in New York
Meeting Type: conference
Contact: see conference website
Description
Higher Dimensional Geometry in NYC is a series of six conferences in Higher Dimensional Geometry which will be held at the Simons Foundation in New York City and at the Simons Centre in Stony Brook over the period 20202022.
Women in Algebraic Geometry
Meeting Type: research collaboration workshop
Contact: see conference website
Description
The Women in Algebraic Geometry Collaborative Research Workshop will bring together researchers in algebraic geometry to work in groups of 46, each led by one or two senior mathematicians. The goals of this workshop are: to advance the frontiers of modern algebraic geometry, including through explicit computations and experimentation, and to strengthen the community of women and nonbinary mathematicians working in algebraic geometry. This workshop capitalizes on momentum from a series of recent events for women in algebraic geometry, starting in 2015 with the IAS Program for Women in Mathematics on algebraic geometry.
Successful applicants will be assigned to a group based on their research interests. The groups will work on openended projects in diverse areas of current interest, including moduli spaces and combinatorics, degenerations, and birational geometry. Several of the proposed projects extensively involve experimentation and computation, which will increase the likelihood that concrete progress is made over the course of five days and provide useful training in computational mathematics.
PIMS  Germany Summer School on Eigenvarieties
Meeting Type: summer school
Contact: see conference website
Description
Description:
Nonarchimedean geometry is the analogue of complex geometry, where the field of complex numbers is replaced by a field which is complete with respect to a padic metric. A fundamental complication is that padic spaces are totally disconnected, and therefore basic notions such as analytic con tinuation must be entirely recast in different language. Nevertheless, the particular properties of the padic topologies, while perverse in some sense, provide the key to a rich, fulfilling, and ultimately productive theory. There are various manifestations of nonarchimedean geometry, e.g. rigid analytic spaces a la Tate, Berkovich spaces or adic spaces a la Huber. For this summer school we take the point of view of adic spaces with emphasis on rigid analytic spaces which form special examples. Indeed, nonarchimedean geometry and the associated area of padic Hodge theory for Galois representations play a central role in modern algebraic number theory. It has become increasingly clear that active researchers in algebraic number theory would be greatly benefitted by having a working knowledge of padic geometric methods.
Eigencurves  and more generally, eigenvarieties  are rigid analytic versions of modular curves, which parametrize padic families of modular forms. The study of such families may be said to have started with Serre in the 1970s, and was extensively developed by Hida in the 1980s; Hida's work on the socalled ordinary modular forms, in particular, was deeply influential in the eventual proof of modularity of elliptic curves by Wiles and others in 1994. However, it was clear even from looking at Serre's results, that a fully satisfactory theory of padic families would require consideration of nonordinary forms, and that such a theory would necessarily require fundamental new ideas. These results were eventually supplied by Coleman in the mid1990s, and the eigencurve parametrizing was introduced as a parameter space by Coleman and Mazur shortly thereafter. The subject has exploded in the last decades, with generalizations of the eigencurve to higher rank groups, and with the use of increasingly sophisticated technology from padic geometry. Furthermore, padic families of automorphic forms have taken on an increasingly important role in modern number theory.
The subject of eigencurves lies somewhere between classical arithmetic geometry represented in Canada, and padic geometry which is wellrepresented in Germany, and this we propose to take advantage of the complementary expertise and the broad outlines of a PIMS/Germany collaboration to organize an event where both sides can benefit. Thus, the proposed workshop on eigenvarieties will be an instructional school for students, postdocs, and researchers in other fields. The goal is to provide beginners with a working knowledge of this immensely active and important field, and to encourage collaborations between German researchers and those at PIMS Institutes around the general workshop themes.
Topics of Instruction:
The goal of the course will be to understand the foundational work of Coleman, and ColemanMazur, and eventually to study the paper on the generalization to the higher dimensional case given by Buzzard. A good overview of the subject is given in the survey article of Kassei.
Invited Speakers:
 John Bergdall, Bryn Mawr College, USA
 George Boxer, University of Chicago, USA
 David Hansen, Max Planck Institute, Germany
 Eugen Hellman, University of Münster
 Christian Johansson, Chalmers Institute of Technology, Sweden
 Judith Ludwig, University of Heidelberg, Germany
 James Newton, King’s College, England
 Vincent Pilloni, Ecole Normale Supérieure de Lyon, France
August 2020
Stacks Project Workshop 2020
Meeting Type: workshop (appropriate for graduate students)
Contact: Pieter Belmans, Aise Johan de Jong, Wei Ho
Description
This will be a workshop in arithmetic and algebraic geometry, similar to the previous iteration (https://stacks.github.io/2017/). The intended participant is a graduate student, or a postdoc, or even a senior researcher. You will work on a single topic in a small group together with a mentor for a week with the aim of producing a text that will be considered for inclusion in the Stacks Project. Part of this process will be seeing how one builds new theory from the foundations. There will also be one or two talks per day covering advanced topics in arithmetic or algebraic geometry.
The Stacks project workshop will have some optional activities you won't see at other workshops. Adding references to and finding mistakes in the Stacks Project (and fixing them) as well as activities related to LaTeX use, Git, and GitHub. Overall these will be aimed at helping you contribute efficiently to the Stacks Project.
The Eighth Pacific Rim Conference in Mathematics
Meeting Type: Conference
Contact: Alan Hammond and Fraydoun Rezakhanlou
Description
The Eighth Pacific Rim Conference on Mathematics will be held at the University of California at Berkeley from Monday 3th August to Friday 7th August 2020. The PRCM will be a high profile mathematical event that will cover a wide range of exciting research in contemporary mathematics. Its objectives are to offer a venue for the presentation to and discussion among a wide audience of the latest trends in mathematical research, and to strength ties between mathematicians working in the Pacific Rim region. The conference will provide junior researchers with opportunities to engage and collaborate with established colleagues within and between the many represented mathematical disciplines.
School on Hodge Theory and Shimura Varieties
Meeting Type: summer school
Contact: Ulrich Görtz
Description
Minicourses by Matt Kerr, Andreas Mihatsch, Colleen Robles, plus a couple of research talks.
Global Langlands, Shimura varieties, and shtukas
Meeting Type: conference
Contact: see conference website
Description
This conference will be on various aspects of the global Langlands correspondence. Topics will include in particular the geometry and cohomology of Shimura varieties and more general locally symmetric spaces, or moduli spaces of shtukas.
Decidability, definability and computability in number theory
Meeting Type: research program
Contact: see conference website
Description
This program is focused on the twoway interaction of logical ideas and techniques, such as definability from model theory and decidability from computability theory, with fundamental problems in number theory. These include analogues of Hilbert's tenth problem, isolating properties of fields of algebraic numbers which relate to undecidability, decision problems around linear recurrence and algebraic differential equations, the relation of transcendence results and conjectures to decidability and decision problems, and some problems in anabelian geometry and field arithmetic. We are interested in this specific interface across a range of problems and so intend to build a semester which is both more topically focused and more mathematically broad than a typical MSRI program.
Connections for Women: Decidability, definability and computability in number theory
Meeting Type: conference
Contact: see conference website
Description
The aim of the workshop is to discover how the problems in number theory and algebraic geometry arising from the Hilbertâ€™s tenth problem for rationals interact with the ideas and techniques in mathematical logic, such as definability from model theory and decidability and degreetheoretic complexity from computability theory. This interaction includes various analogues of Hilbertâ€™s tenth problem and related questions, focusing on the connections of algebraic, numbertheoretic, modeltheoretic, and computabilitytheoretic properties of structures and objects in algebraic number theory, anabelian geometry, field arithmetic, and differential algebra.
Automorphic Forms and Arithmetic
Meeting Type: conference
Contact: see conference website
Description
Serre weights conjectures and geometry of Shimura varieties
Meeting Type: conference
Contact: see conference website
Description
This conference is dedicated to studying recent advancements concerning Serre weights conjectures and the geometry of Shimura varieties and, in particular, the interaction between these two areas.
Number TheoryCohomology in Arithmetic
Meeting Type: thematic research program
Contact: see conference website
Description
Homological tools and ideas are pervasive in number theory. To defend this assertion, it suffices to evoke the role of étale cohomology in the study of the zeta functions of varieties over finite fields through the Weil conjectures, or the cohomological approach to class field theory formulated by Artin and Tate in the 1950's. The theory of motives, a manifestation of a universal cohomology theory attached to algebraic varieties, and the attendant motivic cohomology plays a central role in describing the special values of Lfunctions of varieties over number fields, via the conjectures of Deligne, BeilinsonBloch, and BlochKato. Much progress in the Langlands program exploits the fruitful connection between automorphic representations and the cohomology of associated Shimura varieties and more general arithmetic quotients of locally symmetric spaces. The study of special values of Lfunctions and the Langlands program, widely perceived as two fundamental yet seperate strands of the subject in the early 1990's, were beautifully unified in Wiles' epochmaking proof of the ShimuraTaniyama conjecture, in which this conjecture was reduced to a special instance of the BlochKato conjecture for the symmetric square motive of an elliptic curve. Recent years have seen great strides in our understanding of the cohomology of the arithmetic quotients arising in the study of automorphic representations, spurred in part by the desire to extend the range of applicability of the celebrated TaylorWiles method. This has led to new automorphy and potential automorphy results: most spectacularly, perhaps, for abelian surfaces, as well as elliptic curves over general CM fields.
September 2020
Arithmetic Aspects of Algebraic Groups
Meeting Type: conference
Contact: see conference website
Description
The Banff International Research Station will host the "Arithmetic Aspects of Algebraic Groups" workshop in Banff from September 6 to September 11, 2020.
The investigation of arithmetic groups has been an active and important area of mathematical research ever since it arose in the work of Gauss, Klein, Poincare, and other famous mathematicians of the 18th and 19th centuries. New points of view have recently led to progress on classical problems, opened new directions of inquiry, and revealed unexpected connections with other areas of mathematics. The workshop will bring together experts in the area, researchers in related fields, and young mathematicians who wish to learn about the most recent advances and the most promising directions for the future of the field.
Arakelov Geometry
Meeting Type: conference
Contact: Prof. Dr. Klaus Künnemann
Description
The conference Arakelov Geometry is organized by
José Ignacio Burgos Gil, Walter Gubler, and Klaus Künnemann.
This conference constitutes the eleventh session of the Intercity Seminar on Arakelov Theory organized by Jose Ignacio Burgos Gil, Vincent Maillot and Atsushi Moriwaki with previous sessions in Barcelona, Beijing, Copenhagen, Kyoto, Paris, Regensburg, and Rome.
NonArchimedean and tropical geometry
Meeting Type: Workshop
Contact: see conference website
Description
Géométrie algébrique, Théorie des nombres et Applications (GTA)
Meeting Type: conference
Contact: Gaetan Bisson
Description
The GTA 2020 conference will bring together world class researchers in mathematics. Its main objectives are to discuss recent advances in the fields of algebraic geometry, number theory and their applications, as well as to foster international collaborations on connected topics.
Although contributions from all related areas of mathematics are welcome, particular emphasis will be placed on research interests of our late colleague Alexey Zykin, namely: zetafunctions and Lfunctions, algebraic geometry over finite fields, families of fields and varieties, abelian varieties and elliptic curves.
padic Lfunctions and Euler systems in honor of Bernadette PerrinRiou
Meeting Type: conference
Contact: see conference website
Description
In Iwasawa Theory, one of the central questions is the study of the Iwasawa main conjecture, which relates the characteristic ideal of the Selmer group of a motive to its padic Lfunction (when it exists). This in turn leads to information on the BlochKato conjecture, a generalization of the Birch and SwinnertonDyer conjecture. Cases of the Iwasawa main conjecture have been established using the machinery of Euler systems, which are collections of cohomology classes satisfying certain norm relations and are related to the Lfunction of a motive and were first introduced and exploited in the late 80s and early 90s in the works of Thaine, Kolyvagin, Rubin, and Kato.
Bernadette PerrinRiou, one of the influential, pioneering figures in Iwasawa Theory in the 1990s, is widely acclaimed for the influential ideas she has brought to the subject. Her deep study of the Euler system originally constructed by Kato led to the introduction of her fundamental big logarithm map" (often refereed as the
PerrinRiou map" nowadays), which is a far reaching generalisation of the Coleman power series and is one of the key ingredients in establishing links between Euler systems and padic Lfunctions. Her work also initiated the study of higher rank Euler systems and has been a source of inspiration for many further developments in this direction. Likewise, her padic analogue of the GrossZagier formula has opened up an area of enquiry that remains active and fertile to the present day. All these, as well as many other important contributions of PerrinRiou, continue to serve as a model and a guide for today's research in Iwasawa Theory. This workshop is therefore dedicated to the celebration of her 65th birthday.
In the first decade of this century, further progress in the theory of Euler systems was stymied by the fact that few instances were known beyond the basic examples (circular units, elliptic units, Heegner points, and Beilinson elements) introduced and exploited by Thaine, Rubin, Kolyvagin and Kato respectively. Around 2010, the scope of Kato's construction was extended to encompass padic families of cohomology classes arising from BeilinsonFlach elements, and diagonal cycles in triple products of KugaSato varieties, with application to the Birch and Swinnerton conjecture in analytic rank zero, in the spirit of the early work of Coates and Wiles. Important progress was then made in establishing the Euler system norm compatibilities of BeilinsonFlach elements. This has opened the floodgates for a wide variety of new Euler system constructions, applying notably to the RankinSelberg convolution of two modular forms, Siegel modular forms on GSp(4) and GSp(6), as well as Hilbert modular surfaces. At around the same time, and quite independently, a markedly different strategy has been proposed for studying diagonal on triple products based on congruences between modular forms instead of $p$adic deformations, leading to remarkable constructions whose scope has the potential to surpass the more traditional approach based on normcompatible elements. Finally, important progress arising from the method of Eisenstein congruences offer a powerful complementary approach, greatly contributing to the power, usefulness, and widening appeal of Euler system techniques.
The workshop will precede the annual QuebecMaine conference which will take place at Laval University on Saturday and Sunday (September 2627, 2020). The workshop will end on Friday at noon so that those who wish to attend can travel to Quebec City in the afternoon. (A roughly 3 hour trip by train or by bus.)
Witt vectors in Algebra and Geometry
Meeting Type: conference
Contact: see conference website
Description
Witt vectors are wellknown for their ability to pop up in unexpected places, and can serve as a good starting point for a conversation on many interesting and diverse mathematical subjects. The goal of the conference is to have such a conversation on several recent subjects where Witt vectors appeared yet again (including but not limited to the usual and topological Hochschild Homology, both commutative and noncommutative, prismatic cohomology and padic Hodge theory, polynomial functors, geometric representation theory in char p).
October 2020
Arithmetic quotients of locally symmetric spaces and their cohomology
Meeting Type: conference
Contact: see conference website
Description
If G is a reductive algebraic group over Z, the group G(Z) of its integral points (or any congruence subgroup thereof) acts discretely on the locally symmetric space X:= G(R)/K, where K is a maximal compact subgroup of G(R). The quotients G(Z) X play a fundamental role in the theory of automorphic forms and in number theory. Notably, their cohomology is a rich source of invariants attached to automorphic representations of G, and thus plays a central role in the Langlands program. A fundamental trichotomy governing the topological behaviour of such arithmetic quotients was proposed around 2010 by Bergeron and Venkatesh. A single positive integer d, depending only on the overlying symmetric space X, dictates the expected behaviour of the homology of the arithmetic quotient. When d=0, the cohomology is expect to have very little torsion but lots of characteristic 0 homology, which can be studied via analytic and transcendental methods (de Rham cohomology, Hodge theory). Shimura varieties and evendimensional real hyperbolic spaces fall into this class. When d=1, one expects to find a lot of torsion but very little characteristic 0 homology. Odd dimensional hyperbolic manifolds, such as the Bianchi threefold SL2(Z[i]) SL2(C)/U(2), fall into this case. When d is greater than 1, one expects little torsion and little characteristic zero homology.
There has been remarkable progress towards understanding how this trichotomy interacts with arithmetic: When d = 0, several interesting recent torsionfreeness results have been obtained by researchers like Caraiani, Emerton, Gee, and Scholze. When d=1, one can ask whether torsion always arises when it's expected to, and with the expected abundance. Torsion can be probed analytically using the CheegerMuller theorem. But there are obstructions ("tiny eigenvalues" and "very complex cycles"), which are very interesting in their own right, and need to be overcome in order to prove that there's as much torsion as expected. This torsion growth problem, especially for hyperbolic threemanifolds, has a life of its own even outside number theory, notably in the community of geometric groups theorists. Among the most striking developments arising in the relatively less well explored setting where d is larger than 1, let us mention Peter Scholze's construction of Galois representations attached to (possibly torsion) eigenclasses in the cohomology of arithmetic quotients, which is especially deep in this case. Another highly promising, fundamental breakthrough is manifested in Akshay Venkatesh's conjecture on derived Hecke algebras, which is expected to play an important role in extending the scope of the TaylorWiles method beyond the setting of d=0 to which it had been confined until relatively recently. The deep study of torsion in homology and analytic torsion carried out earlier by Bergeron, Venkatesh and others played a very important part in the nascent theory of derived Hecke operators and the attendant motivic action on the cohomology of arithmetic groups. In some very special instances, where G=GL(2) and one focusses on the coherent cohomology of an arithmetic quotient with values in certain automorphic sheaves, Venkatesh's conjectures exhibit a tantalising connection with certain ``tame refinements", in the spirit of conjectures of Mazur and Tate, of conjectures on the values of triple product padic Lfunctions.
The field is still in a very exploratory stage in which precise expectations (conjectural or otherwise) have not yet fully cristallised. For instance, there does not yet seem to be a reasonable conjecture about "how much cohomology", torsion or characteristic zero, to expect when d is greater than 1. Among other reasons, this makes computing in this setting very interesting. The workshop is expected to have a significant computational and experimental component, in which various experts will report on experimental data that might prove valuable in solidifying our expectations.
November 2020
WIN5: Women in Numbers 5
Meeting Type: conference
Contact: see conference website
Description
The Banff International Research Station will host the "WIN5: Women in Numbers 5" workshop in Banff from November 15 to November 20, 2020.
Despite recent progress in gender equality in STEM fields, women continue to be underrepresented in the research landscape of many areas of mathematics, including number theory. The Women in Numbers (WIN) network was created in 2008 for the purpose of increasing the number of active female researchers in number theory. For this purpose, WIN sponsors regular conferences, taking place approximately every three years, where female scholars gather to collaborate on cuttingedge research in the field and produce publishable scientific results. The WIN workshops provide an ongoing forum for involving each new generation of junior faculty and graduate students in stateoftheart research in number theory. They have to come be highly regarded among the broader number theory community due to the quality of research produced by these collaborations.
WIN5 is the fifth in this series of events, bringing together female number theorists at various career stages for research collaboration and mentorship. As always, the scientific program will centre on onsite collaboration on open research problems in number theory, conducted in small groups comprised of senior and junior scholars as well as graduate students. Groups will publish their initial finding in a peerreviewed conference proceedings volume, and research partnerships formed at the WIN5 workshop are expected to last well beyond the duration of the event. WIN projects have the potential to grow into fruitful longterm research alliances that have a transforming influence on participants' careers and a significant positive impact on the research landscape in number theory. Past WIN workshop project groups have matured into highly effective research teams producing ongoing scholarly work of exceptional scientific quality.
Langlands Program: Number Theory and Representation Theory
Meeting Type: conference
Contact: see conference website
Description
The Casa MatemÃ¡tica Oaxaca (CMO) will host the "Langlands Program: Number Theory and Representation Theory" workshop in Oaxaca, from November 29 to December 04, 2020.
Langlands functoriality conjectures predict a vast generalization of the classical reciprocity laws of Class Field Theory, providing crossroads between Number Theory and Representation Theory. The conjectures are both local and global and pertain a connected reductive group and its Langlands dual group.
We aim to introduce young mathematicians in M\'exico and LatinAmerica to topics of current research in the Langlands Program. We will also promote the participation women and of graduate students from a diverse background in a workshop where experts in the field from across the world will gather to expand upon the frontiers of current research. In addition to research talks, there will be three courses that will also be accessible to mathematicians working in closely related fields.
December 2020
padic cohomology, padic families of modular forms, and padic Lfunctions
Meeting Type: conference
Contact: see conference website
Description
The workshop will be devoted to the varied and fruitful interactions between padic cohomology theories, the theory of padic deformations of modular forms and Galois representations, and the construction of padic Lfunctions arising from the latter using techniques drawn from the former, with special emphasis on their rich array of arithmetic applications.
The field of padic automorphic forms has seen a huge development in the last decades with the construction of padic families in many new context. Among this one can cite Hansen's construction of eigenvarieties using overconvergent cohomology, and the coherent approach using (partial) Igusa towers of Andreattaâ€“Iovitaâ€“Pilloni. There have been immediate applications to the construction of padic Lfunctions in families and to the proof of several instances of the conjectures by Greenberg and Benois on trivial zeroes, such as the work of Barreraâ€“Dimitrovâ€“Jorza.
But the existence of these eigenvarieties have proved to be useful also for the study of many other interesting arithmetic problems.
The first example is given by the applications to the Blochâ€“Kato conjecture. Bloch and Kato conjectured that the most interesting arithmetic information concerning varieties (and more generally, geometric Galois representations) are contained in two objects: the Selmer group and the Lfunction. They also conjecture that all the information coming from the Selmer group can be recovered from the Lfunction. Some special cases of this conjecture have been proven: we cite for example the work of Bellaicheâ€“Chenevier for unitary groups and Skinnerâ€“Urban for elliptic curves in rank less or equal than 2. The key ingredients in these works is the use of deformations of automorphic forms and their Galois representations in padic families to construction elements in the Selmer group.
Another example is the study of local properties of Galois representations and the corresponding padic Hodge theory. We cite the work of Kedlaya, Pottharst, and Xiao concerning the existence of triangulations in families for padic representations of padic fields arising from finite slope automorphic forms. Other related results are the works on the smoothness of eigenvarieties at critical points by Bergdall and Breuilâ€“Hellmannâ€“Schraen; it has implication on the existence of companion forms, which are different padic automorphic forms sharing the same Galois representations (such as a CM form and its Serre antiderivative).
Very recently two new geometric approaches have been developed in the study of padic families and their Lfunctions.
Andreatta and Iovita introduced the idea of vector bundles with marked sections, which not only allows one to recover their previous constructions of eigenvarieties but let them padic interpolate in families the de Rham cohomology of the modular curve and the Gaussâ€“Manin connection. They can then construct triple product padic Lfunctions for finite slope families and anticyclotomic padic Lfunctions when p is inert in the CM field.
At the same time, the introduction of perfectoid spaces and adic geometric has brought new and fresh ideas in the field: one can cite the new construction of classical eigenvarieties by Chojeckiâ€“Hansenâ€“Johansson using functions on the perfectoid tower of modular curves and the construction by Kriz of a new padic Maassâ€“Shimura operator and anticyclotomic padic Lfunctions in the inert case. His strategy relies on Scholze's Hodge to de Rham comparison isomorphism, which has been recently upgraded to an integral comparison map by Bhattâ€“Morrowâ€“Scholze.
These new geometric tools have already allowed the construction of new padic Lfunctions; the aim of the workshop is to bring together arithmetic people with the experts in these two innovative approaches to find new exciting applications, both to global (Galois representations and their Lfunctions) and local (integral padic Hodge theory) problems.
January 2021
Moduli spaces and Modular forms
Meeting Type: invitational workshop
Contact: see conference website
Description
February 2021
Combinatorial Algebraic Geometry
Meeting Type: thematic research program
Contact: see conference website
Description
Combinatorial algebraic geometry comprises the parts of algebraic geometry where basic geometric phenomena can be described with combinatorial data, and where combinatorial methods are essential for further progress.
Research in combinatorial algebraic geometry utilizes combinatorial techniques to answer questions about geometry. Typical examples include predictions about singularities, construction of degenerations, and computation of geometric invariants such as GromovWitten invariants, Euler characteristics, the number of points in intersections, multiplicities, genera, and many more. The study of positivity properties of geometric invariants is one of the driving forces behind the interplay between geometry and combinatorics. Flag manifolds and Schubert calculus are particularly rich sources of invariants with positivity properties.
In the opposite direction, geometric methods provide powerful tools for studying combinatorial objects. For example, many deep properties of polytopes are consequences of geometric theorems applied to associated toric varieties. In other cases geometry is a source of inspiration. For instance, longstanding conjectures about matroids have recently been resolved by proving that associated algebraic structures behave as if they are cohomology rings of smooth algebraic varieties.
Much research in combinatorial algebraic geometry relies on mathematical software to explore and enumerate combinatorial structures and compute geometric invariants. Writing the required programs is a considerable part of many research projects. The development of new mathematics software is therefore prioritized in the program.
The program will bring together experts in both pure and applied parts of mathematics as well mathematical programmers, all working at the confluence of discrete mathematics and algebraic geometry, with the aim of creating an environment conducive to interdisciplinary collaboration. The semester will include four weeklong workshops, briefly described as follows.
A 'bootcamp' aimed at introducing graduate students and earlycareer researchers to the main directions of research in the program.
A research workshop dedicated to geometry arising from flag manifolds, classical and quantum Schubert calculus, combinatorial Hodge theory, and geometric representation theory.
A research workshop dedicated to polyhedral spaces and tropical geometry, toric varieties, NewtonOkounkov bodies, cluster algebras and varieties, and moduli spaces and their tropicalizations.
A Sage/Oscar Days workshop dedicated to development of programs and software libraries useful for research in combinatorial algebraic geometry. This workshop will also feature a series of lectures by experts in polynomial computations.
July 2021
Rational Points 2021
Meeting Type: workshop
Contact: Michael Stoll
Description
This workshop aims at bringing together the leading experts in the field, covering a broad spectrum reaching from the more theoreticallyoriented over the explicit to the algorithmic aspects. The fundamental problem motivating the workshop asks for a description of the set of rational points X(Q) for a given algebraic variety X defined over Q. When X is a curve, the structure of this set is known, and the most interesting question is how to determine it explicitly for a given curve. When X is higherdimensional, much less is known about the structure of X(Q), even when X is a surface. So here the open questions are much more basic for our understanding of the situation, and on the algorithmic side, the focus is on trying to decide if a given variety does have any rational point at all.
This is a workshop with about 50 participants. Participation is by invitation. Every participant is expected to contribute actively to the success of the event, by giving talks and/or by taking part in the discussions.
August 2021
Automorphic Forms, Geometry and Arithmetic
Meeting Type: invitational workshop
Contact: see conference website