# Mathematical Sciences Research Institute

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1. # ProgramComplementary Program 2019-20

The Complementary Program has a limited number of memberships that are open to mathematicians whose interests are not closely related to the core programs; special consideration is given to mathematicians who are partners of an invited member of a core program.

Updated on Nov 27, 2018 12:28 PM PST
2. # ProgramQuantum Symmetries

Organizers: Vaughan Jones (Vanderbilt University), LEAD Scott Morrison (Australian National University), Victor Ostrik (University of Oregon), Emily Peters (Loyola University), Eric Rowell (Texas A & M University), LEAD Noah Snyder (Indiana University), Chelsea Walton (University of Illinois at Urbana-Champaign)
The study of tensor categories involves the interplay of representation theory, combinatorics, number theory, and low dimensional topology (from a string diagram calculation, describing the 3-dimensional bordism 2-category [arXiv:1411.0945]).

Symmetry, as formalized by group theory, is ubiquitous across mathematics and science. Classical examples include point groups in crystallography, Noether's theorem relating differentiable symmetries and conserved quantities, and the classification of fundamental particles according to irreducible representations of the Poincaré group and the internal symmetry groups of the standard model. However, in some quantum settings, the notion of a group is no longer enough to capture all symmetries. Important motivating examples include Galois-like symmetries of von Neumann algebras, anyonic particles in condensed matter physics, and deformations of universal enveloping algebras. The language of tensor categories provides a unified framework to discuss these notions of quantum symmetry.

Updated on Jan 14, 2020 02:21 PM PST
3. # ProgramHigher Categories and Categorification

Organizers: David Ayala (Montana State University), Clark Barwick (University of Edinburgh), David Nadler (University of California, Berkeley), LEAD Emily Riehl (Johns Hopkins University), Marcy Robertson (University of Melbourne), Peter Teichner (Max-Planck-Institut für Mathematik), Dominic Verity (Macquarie University)
swallowtail identity

Though many of the ideas in higher category theory find their origins in homotopy theory — for instance as expressed by Grothendieck’s “homotopy hypothesis” — the subject today interacts with a broad spectrum of areas of mathematical research. Unforeseen descent, or local-to-global formulas, for familiar objects can be articulated in terms of higher invertible morphisms. Compatible associative deformations of a sequence of maps of spaces, or derived schemes, can putatively be represented by higher categories, as Koszul duality for E_n-algebras suggests. Higher categories offer unforeseen characterizing universal properties for familiar constructions such as K-theory. Manifold theory is natively connected to higher category theory and adjunction data, a connection that is most famously articulated by the recently proven Cobordism Hypothesis.
In parallel, the idea of "categorification'' is playing an increasing role in algebraic geometry, representation theory, mathematical physics, and manifold theory, and higher categorical structures also appear in the very foundations of mathematics in the form of univalent foundations and homotopy type theory. A central mission of this semester will be to mitigate the exorbitantly high "cost of admission'' for mathematicians in other areas of research who aim to apply higher categorical technology and to create opportunities for potent collaborations between mathematicians from these different fields and experts from within higher category theory.

Updated on Jan 10, 2020 03:55 PM PST
4. # SeminarPostdoc/Graduate Student Seminar on Professional Development

Updated on Apr 02, 2020 07:47 AM PDT
5. # SeminarHomotopy Type Theory Electronic Seminar Talks: Univalence of the universal coCartesian fibration

Updated on Mar 26, 2020 10:57 AM PDT
6. # SeminarThursday Online Seminar: Enriched factorization homology in dimension 1

Updated on Mar 30, 2020 11:20 AM PDT
1. # SeminarTuesday Online Seminar:

Created on Mar 26, 2020 03:49 PM PDT
2. # SeminarWednesday Online Seminar: Joyal's cylinder conjecture

Updated on Mar 30, 2020 02:03 PM PDT
3. # SeminarPostdoc/Graduate Student Seminar on Professional Development

Updated on Apr 02, 2020 07:49 AM PDT
4. # SeminarThursday Online Seminar:

Updated on Mar 27, 2020 08:32 AM PDT
5. # SeminarTuesday Online Seminar:

Created on Mar 26, 2020 03:49 PM PDT
6. # SeminarWednesday Online Seminar:

Created on Mar 26, 2020 03:51 PM PDT
7. # SeminarPostdoc/Graduate Student Seminar on Professional Development

Updated on Apr 02, 2020 07:49 AM PDT
8. # SeminarHomotopy Type Theory Electronic Seminar Talks:

Created on Mar 26, 2020 10:53 AM PDT
9. # SeminarThursday Online Seminar:

Updated on Mar 27, 2020 08:33 AM PDT
10. # SeminarPostdoc/Graduate Student Seminar on Professional Development

Updated on Apr 02, 2020 07:50 AM PDT
11. # SeminarPostdoc/Graduate Student Seminar on Professional Development

Updated on Apr 02, 2020 07:50 AM PDT
12. # Workshop[Moved Online] Hot Topics: Optimal transport and applications to machine learning and statistics

Organizers: Luigi Ambrosio (Scuola Normale Superiore), Francis Bach (École Normale Supérieure), LEAD Katy Craig (University of California, Santa Barbara), Carola-Bibiane Schönlieb (University of Cambridge), Stefano Soatto (University of California, Los Angeles)
Image drawn by Dr. Katy Craig

***Due to the COVID-19 virus outbreak, the 2020 Hot Topics: Optimal transport and applications to machine learning and statistic workshop will no longer be held onsite at MSRI, rather it will take place online from May 4-8 as scheduled***

All on-site programming at MSRI in Berkeley is cancelled. **Please DO NOT TRAVEL to Berkeley / MSRI for this event.

Workshop Description:
The goal of the workshop is to explore the many emerging connections between the theory of Optimal Transport and models and algorithms currently used in the Machine Learning community. In particular, the use of Wasserstein metrics and the relation between discrete models and their continuous counterparts will be presented and discussed.

Updated on Mar 18, 2020 10:37 AM PDT
13. # SeminarPostdoc/Graduate Student Seminar on Professional Development

Updated on Apr 02, 2020 07:51 AM PDT
14. # SeminarPostdoc/Graduate Student Seminar on Professional Development

Updated on Apr 02, 2020 07:51 AM PDT
15. # SeminarPostdoc/Graduate Student Seminar on Professional Development

Updated on Apr 02, 2020 07:51 AM PDT
16. # SeminarPostdoc/Graduate Student Seminar on Professional Development

Updated on Apr 02, 2020 07:51 AM PDT

Organizers: Chengming Bai (Chern Institute of Mathematics), LEAD Dave Bayer (Columbia University), Claudia Miller (Syracuse University)
A cellular resolution of the real projective plan

The two topics, combinatorial theory of free resolutions and differential graded algebra techniques in homological algebra, each have a long and rich history in commutative algebra and its applications to algebraic geometry. Free resolutions are at the center of much of the study in the field and these two approaches give powerful tools for their study and their application to other problems. Neither of these topics is generally covered in graduate courses. Furthermore, recent developments have exhibited exciting interplay between the two subjects. The purpose of the school is to introduce the graduate students to these subjects and these new developments. The school will consist of two lectures each day and carefully planned problem sessions designed to reinforce the foundational material and to give them a chance to experiment with problems involving the interplay between the two subjects.

Updated on Jul 26, 2019 03:43 PM PDT
18. # MSRI-UPMSRI-UP 2020: Branched Covers of Curves

Organizers: Federico Ardila (San Francisco State University), LEAD Duane Cooper (Morehouse College), Maria Franco (Queensborough Community College (CUNY); MSRI - Mathematical Sciences Research Institute), Rebecca Garcia (Sam Houston State University), Edray Goins (Pomona College), Suzanne Weekes (Worcester Polytechnic Institute)

The MSRI-UP summer program is designed to serve a diverse group of undergraduate students who would like to conduct research in the mathematical sciences.

In 2020, MSRI-Up will focus on Branched Covers of Curves. The research program will be led by Dr. Edray Goins, Professor of Mathematics at Pomona College.

Updated on Dec 10, 2019 09:18 AM PST
19. # Summer Research in Mathematics2020 Summer Research in Mathematics

MSRI's Summer Research in Mathematics program provides space, funding, and the opportunity for in-person collaboration to small groups of mathematicians, especially women and gender-expansive individuals, whose ongoing research may have been disproportionately affected by various obstacles including family obligations, professional isolation, or access to funding. Through this effort, MSRI aims to mitigate the obstacles faced by these small groups, improve the odds of research project completion, and deepen their research experience.

The ultimate goal of this program is to enhance the mathematical sciences as a whole by positively affecting the research and careers of all of its participants and assisting their efforts to maintain involvement in the research community.

The application period for the 2020 program is now open. To apply, please see this webpage.

Updated on Sep 26, 2019 09:50 AM PDT
20. # African Diaspora Joint Mathematics2020 African Diaspora Joint Mathematics Workshop

The African Diaspora Joint Mathematics Workshop (ADJOINT) will take place at the Mathematical Sciences Research Institute in Berkeley, CA from June 15 to June 26, 2020.

ADJOINT is a two-week summer activity designed for researchers with a Ph.D. degree in the mathematical sciences who are interested in conducting research in a collegial environment.

The main objective of ADJOINT is to provide opportunities for in-person research collaboration to U.S. mathematicians, especially those from the African Diaspora, who will work in small groups with research leaders on various research projects.

Through this effort, MSRI aims to establish and promote research communities that will foster and strengthen research productivity and career development among its participants. The ADJOINT workshops are designed to catalyze research collaborations, provide support for conferences to increase the visibility of the researchers, and to develop a sense of community among the mathematicians who attend.

The end goal of this program is to enhance the mathematical sciences and its community by positively affecting the research and careers of African-American mathematicians and supporting their efforts to achieve full access and engagement in the broader research community.

During the workshop, each participant will:

• conduct research at MSRI within a group of four to five mathematicians under the direction of one of the research leaders
• participate in professional enhancement activities provided by the onsite ADJOINT Director
• receive funding for two weeks of lodging, meals and incidentals, and one round-trip travel to Berkeley, CA

After the two-week workshop, each participant will:

• have the opportunity to further their research project with the team members including the research leader
• have access to funding to attend conference(s) or to meet with other team members to pursue the research project, or to present results
• become part of a network of research and career mentors

Updated on Feb 27, 2020 10:51 AM PST
21. # Summer Graduate SchoolAlgebraic Theory of Differential and Difference Equations, Model Theory and their Applications

Organizers: LEAD Alexey Ovchinnikov (Queens College, CUNY), Anand Pillay (University of Notre Dame), Thomas Scanlon (University of California, Berkeley), Michael Wibmer (University of Notre Dame)
Algebraic Theory Of Differential And Difference Equations, Model Theory And Their Applications

The purpose of the summer school will be to introduce graduate students to effective methods in algebraic theories of differential and difference equations with emphasis on their model-theoretic foundations and to demonstrate recent applications of these techniques to studying dynamic models arising in sciences. While these topics comprise a coherent and rich subject, they appear in graduate coursework in at best a piecemeal way, and then only as components of classes for other aims. With this Summer Graduate School, students will learn both the theoretical basis of differential and difference algebra and how to use these methods to solve practical problems. Beyond the lectures, the graduate students will meet daily in problem sessions and will participate in one-on-one mentoring sessions with the lecturers and organizers.

Updated on Jan 16, 2020 11:37 AM PST
22. # Summer Graduate SchoolGeometric Flows (Athens, Greece)

Organizers: Nicholas Alikakos (National and Kapodistrian University of Athens (University of Athens)), Panagiota Daskalopoulos (Columbia University)

[The image on this vase from Minoan Crete, dated on 1500-2000 BC, resembles an ancient solution to the Curve shortening flow - one of the most basic geometric flows. The vase is at Heraklion Archaeological Museum]

This summer graduate school is a collabroation between MSRI and the FORTH-IACM Institute in Crete. The purpose of the school is to introduce graduate students to some of the most important geometric evolution equations.

This is an area of geometric analysis that lies at the interface of differential geometry and partial differential equations. The lectures will begin with an introduction to nonlinear diffusion equations and continue with  classical results on the Ricci Flow, the  Mean curvature flow and other fully non-linear extrinsic flows such as the Gauss curvature flow.  The lectures will also include   geometric applications such as isoperimetric inequalities, topological applications such as the Poincaré onjecture,  as well as recent important developments related to the study of singularities and ancient solutions.

Updated on Jan 23, 2020 12:15 PM PST
23. # Summer Graduate SchoolSéminaire de Mathématiques Supérieures 2020: Discrete Probability, Physics and Algorithms (Montréal, Canada)

Organizers: Gerard Ben Arous (New York University, Courant Institute), LEAD Alexander Fribergh (University of Montreal), Lea Popovic (Concordia University)

Probability theory, statistics as well as mathematical physics have increasingly been used in computer science. The goal of this school is to provide a unique opportunity for graduate students and young researchers to developed multi-disciplinary skills in a rapidly evolving area of mathematics.

The topics would include spin glasses, constraint satisfiability, randomized algorithms, Monte-Carlo Markov chains and high-dimensional statistics, sparse and random graphs, computational complexity, estimation and approximation algorithms. Those topics will fall into two main categories, on the one hand problems related to spin glasses and on the other hand random algorithms.

The part of the summer school dedicated to spin glasses will be split into three parts: an introductory course about traditional spin glasses followed by two more advanced courses where spin glasses meet computer science in addition to a talk on dynamics of spin glasses. The part of the summer school on random algorithms will consist of an introductory course on phase transitions in large random structures, followed by advanced courses on theoretical bounds for computational complexity in reconstruction and inference, and on understanding rare events in random graphs and models of statistical mechanics.

The two introductory courses on spin glasses and on random algorithms will be accompanied by three exercises sessions of one hour. A one hour exercises session will follow each of the three sessions of a course for both the introductory course on spin glasses and the introductory course on random algorithms. Exercises sessions will be led by an assistant, but will primarily focus on participation of the students.

Updated on Feb 20, 2020 01:37 PM PST
24. # Summer Graduate SchoolRandom Graphs

Organizers: Louigi Addario-Berry (McGill University), Remco van der Hofstad (Technische Universiteit Eindhoven)
by DeDelphin Sénizergues

The topic of random graphs is at the forefront of applied probability, and it is one of the central topics in multidisciplinary science where mathematical ideas are used to model and understand the real world. At the same time, random graphs pose challenging mathematical problems that have attracted the attention from probabilists and combinatorialists since the 1960, with the pioneering work of Erdös and Rényi. Around the turn of the millennium, very large data sets started to become available, and several applied disciplines started to realize that many real-world networks, even though they are from various different origins, share many fascinating features. In particular, many of such networks are small worlds, meaning that graph distances in them are typically quite small, and they are scalefree, in the sense that there are enormous differences in the number of connections that their elements make. In particular, such networks are quite different from the classical random graph models, such as proposed by Erdös and Rényi.

Updated on Jul 26, 2019 03:40 PM PDT
25. # Summer Graduate SchoolAlgebraic Curves (Hainan, China)

Organizers: David Eisenbud (MSRI - Mathematical Sciences Research Institute), Joseph Harris (Harvard University)
Illustration generously provided by Herwig Hauser

[Image: The simplest interesting case of linkage (liaison) of curves in projective 3-space. We see two quadric surfaces, one of which is a cone, meeting in the union of a line (vertical in the illustration)  and a twisted cubic (snaking up from the bottom left to the upper right, tangent to the line at the origin.]

The theory of algebraic curves, arguably the oldest branch of algebraic geometry, has seen major developments in recent years, for example in the study of syzygies, and around questions about moduli spaces and Hilbert schemes of curves. The theory is rich in research activity and unsolved problems. There is an encyclopedic work by Arbarello, Cornalba, Griffiths and Harris, but there is no modern text that could be used as a textbook and that goes beyond the basics of the theory. We have embarked on a project to write a book at roughly the level of the wonderful book on complex algebraic surfaces by Arnaud Beauville. The intent can be seen from a list of some major topics it will treat:

• Linear series and Brill-Noether theory
• Personalities: curves in projective space with low genus and degree
• Overview of moduli and Jacobians
• Hilbert schemes

The school will have two series of lectures, one by Harris and one by Eisenbud. Harris’ lectures will focus on the more geometric side of the theory, including Brill-Noether theory, families of curves and Jacobians; while Eisenbud’s lectures will focus on the more algebraic side of the theory, including properties of the homogeneous coordinate rings of curves (Cohen-Macaulay, Gorenstein, free resolutions, scrolls, ...) Both lecturers will rely on chapters from the forthcoming book, which should be finished in large part by the time of the school. In addition, some of Eisenbud’s lectures will treat the use of Macaulay2 to investigate the projective embeddings of curves.

Updated on Aug 14, 2019 03:45 PM PDT
26. # Summer Graduate SchoolFoundations and Frontiers of Probabilistic Proofs (Zurich, Switzerland)

Organizers: Alessandro Chiesa (University of California, Berkeley), Tom Gur (University of Warwick)
Several executions of a 3-dimensional sumcheck protocol with a random order of directions (thanks to Dev Ojha for creating the diagram)

Proofs are at the foundations of mathematics. Viewed through the lens of theoretical computer science, verifying the correctness of a mathematical proof is a fundamental computational task. Indeed, the P versus NP problem, which deals precisely with the complexity of proof verification, is one of the most important open problems in all of mathematics.

The complexity-theoretic study of proof verification has led to exciting reenvisionings of mathematical proofs. For example, probabilistically checkable proofs (PCPs) admit local-to-global structure that allows verifying a proof by reading only a minuscule portion of it. As another example, interactive proofs allow for verification via a conversation between a prover and a verifier, instead of the traditional static sequence of logical statements. The study of such proof systems has drawn upon deep mathematical tools to derive numerous applications to the theory of computation and beyond.

In recent years, such probabilistic proofs received much attention due to a new motivation, delegation of computation, which is the emphasis of this summer school. This paradigm admits ultra-fast protocols that allow one party to check the correctness of the computation performed by another, untrusted, party. These protocols have even been realized within recently-deployed technology, for example, as part of cryptographic constructions known as succinct non-interactive arguments of knowledge (SNARKs).

This summer school will provide an introduction to the field of probabilistic proofs and the beautiful mathematics behind it, as well as prepare students for conducting cutting-edge research in this area.

Updated on Feb 29, 2020 10:41 AM PST
27. # Summer Graduate SchoolNew Directions in Representation Theory (AMSI, Brisbane, Australia)

Organizers: Tim Brown (Australian Mathematical Sciences Institute), Joseph Grotowski (University of Queensland), Chloe Pearse (Australian Mathematical Sciences Institute), Jacqui Ramagge (University of Sydney), Ole Warnaar (University of Queensland), Geordie Williamson (University of Sydney)

Representation Theory has undergone a revolution in recent years, with the development of what is now known as higher representation theory. In particular, the notion of categorification has led to the resolution of many problems previously considered to be intractable.

The school will begin by providing students with a brief but thorough introduction to what could be termed the “bread and butter of modern representation theory”, i.e., compact Lie groups and their representation theory; character theory; structure theory of algebraic groups.

We will then continue on to a number of more specialized topics. The final mix will depend on discussions with the prospective lecturers, but we envisage such topics as:

• modular representation theory of finite groups (blocks, defect groups, Broué’s conjecture);

• perverse sheaves and the geometric Satake correspondence;

• the representation theory of real Lie groups.

Updated on Aug 08, 2019 09:36 AM PDT
28. # Summer Graduate SchoolMetric Geometry and Geometric Analysis (Oxford, United Kingdom)

Organizers: LEAD Cornelia Drutu (University of Oxford), Panos Papazoglou (University of Oxford)

The purpose of the summer school is to introduce graduate students to key mainstream directions in the recent development of geometry, which sprang from Riemannian Geometry in an attempt to use its methods in various contexts of non-smooth geometry. This concerns recent developments in metric generalizations of the theory of nonpositively curved spaces and discretizations of methods in geometry, geometric measure theory and global analysis. The metric geometry perspective gave rise to new results and problems in Riemannian Geometry as well.

All these themes are intertwined and have developed either together or greatly influencing one another. The summer school will introduce some of the latest developments and the remaining open problems in these very modern areas, and will emphasize their synergy.

Updated on Jul 31, 2019 11:07 AM PDT
29. # Summer Graduate School Sums of Squares Method in Geometry, Combinatorics and Optimization

Organizers: LEAD Grigoriy Blekherman (Georgia Institute of Technology), Annie Raymond (University of Massachusetts Amherst), Rekha Thomas (University of Washington)
Graph of the Motzkin polynomial, which is nonnegative but not a sum of squares.

The study of nonnegative polynomials and sums of squares is a classical area of real algebraic geometry dating back to Hilbert’s 17th problem. It also has rich connections to real analysis via duality and moment problems. In the last 15 years, sums of squares relaxations have found a wide array of applications from very applied areas (e.g., robotics, computer vision, and machine learning) to theoretical applications (e.g., extremal combinatorics, theoretical computer science). Also, an intimate connection between sums of squares and classical algebraic geometry has been found. Work in this area requires a blend of ideas and techniques from algebraic geometry, convex geometry and representation theory. After an introduction to nonnegative polynomials, sums of squares and semidefinite optimization, we will focus on the following three topics:

• Sums of squares on real varieties (sets defined by real polynomial equations) and connections with classical algebraic geometry.
• Sums of squares method for proving graph density inequalities in extremal combinatorics. Here addition and multiplication take place in the gluing algebra of partially labelled graphs.
• Sums of squares relaxations for convex hulls of real varieties and theta-bodies with applications in optimization.

The summer school will give a self-contained introduction aimed at beginning graduate students, and introduce participants to the latest developments. In addition to attending the lectures, students will meet in intensive problem and discussion sessions that will explore and extend the topics developed in the lectures.

Updated on Jul 26, 2019 03:40 PM PDT
30. # Summer Graduate SchoolIntroduction to water waves

Organizers: Mihaela Ifrim (University of Wisconsin-Madison), Daniel Tataru (University of California, Berkeley)
Overturning wave, artistic drawing by E. Ifrim

The purpose of this two weeks school is to introduce graduate students to the state of the art methods and results in the study of incompressible Euler’s equations in general, and water waves in particular. This is a research area which is highly relevant to many real life problems, and in which substantial progress has been made in the last decade.

The goal is to present the main current research directions in water waves. We will begin with the physical derivation of the equations, and present some of the analytic tools needed in study. The final goal will be two-fold, namely (i) to understand the local solvability of the Cauchy problem for water waves, as well as (ii) to describe the long time behavior of solutions.

Through the lectures and associated problem sessions, students will learn about a number of new analysis tools which are not routinely taught in a graduate school curriculum. The goal is to help students acquire the knowledge needed in order to start research in water waves and Euler equations.

Updated on Jul 26, 2019 03:40 PM PDT
31. # ProgramRandom and Arithmetic Structures in Topology

Organizers: Nicolas Bergeron (École Normale Supérieure), Jeffrey Brock (Yale University), Alexander Furman (University of Illinois at Chicago), Yizhaq Gelander (Weizmann Institute of Science), Ursula Hamenstädt (Rheinische Friedrich-Wilhelms-Universität Bonn), Fanny Kassel (Institut des Hautes Études Scientifiques (IHES)), LEAD Alan Reid (Rice University)

The use of dynamical invariants has long been a staple of geometry and topology, from rigidity theorems, to classification theorems, to the general study of lattices and of the mapping class group. More recently, random structures in topology and notions of probabilistic geometric convergence have played a critical role in testing the robustness of conjectures in the arithmetic setting. The program will focus on invariants in topology, geometry, and the dynamics of group actions linked to random constructions.

Updated on Apr 22, 2019 01:56 PM PDT
32. # ProgramDecidability, definability and computability in number theory

Organizers: Valentina Harizanov (George Washington University), Maryanthe Malliaris (University of Chicago), Barry Mazur (Harvard University), Russell Miller (Queens College, CUNY; CUNY, Graduate Center), Jonathan Pila (University of Oxford), LEAD Thomas Scanlon (University of California, Berkeley), Alexandra Shlapentokh (East Carolina University), Carlos Videla (Mount Royal University)
Title page of Diophantus' Arithmetica - ETH Zurich

This program is focused on the two-way 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.

Updated on Mar 04, 2020 11:36 AM PST
33. # ProgramComplementary Program 2020-21

The Complementary Program has a limited number of memberships that are open to mathematicians whose interests are not closely related to the core programs; special consideration is given to mathematicians who are partners of an invited member of a core program.

Updated on Nov 20, 2019 01:47 PM PST
34. # WorkshopConnections Workshop: Decidability, definability and computability in number theory

Organizers: LEAD Valentina Harizanov (George Washington University), David Marker (University of Illinois, Chicago), Russell Miller (Queens College, CUNY; CUNY, Graduate Center), Jennifer Park (Ohio State University), Alexandra Shlapentokh (East Carolina University)
Title page of Diophantus' Arithmetica - ETH Zurich

The aim of the workshop is to discover how the problems in number theory and algebraic geometry arising from the Hilbert’s tenth problem for rationals interact with the ideas and techniques in mathematical logic, such as definability from model theory and decidability and degree-theoretic complexity from computability theory. This interaction includes various analogues of Hilbert’s tenth problem and related questions, focusing on the connections of algebraic, number-theoretic, model-theoretic, and computability-theoretic properties of structures and objects in algebraic number theory, anabelian geometry, field arithmetic, and differential algebra.

Updated on Mar 04, 2020 11:46 AM PST
35. # WorkshopIntroductory Workshop: Decidability, definability and computability in number theory

Organizers: Maryanthe Malliaris (University of Chicago), Russell Miller (Queens College, CUNY; CUNY, Graduate Center), LEAD Jonathan Pila (University of Oxford), Alexandra Shlapentokh (East Carolina University)
Title page of Diophantus' Arithmetica - ETH Zurich

Our workshop will focus research efforts on the interaction of number-theoretic questions with questions of decidability, definability, and computability, bringing together researchers approaching these questions from various sides to work on the core issues. This Introductory Workshop will serve as the introductory event of the MSRI semester program and is designed to introduce the basic structures and ideas of the different communities, and to highlight problems of active current interest.

Updated on Apr 23, 2019 01:30 PM PDT
36. # WorkshopConnections Workshop: Random and Arithmetic Structures in Topology

Organizers: LEAD Ursula Hamenstädt (Rheinische Friedrich-Wilhelms-Universität Bonn), LEAD Fanny Kassel (Institut des Hautes Études Scientifiques (IHES))

This two-day workshop will consist of various talks given by prominent female mathematicians in the field.  These will be appropriate for graduate students, post-docs, and researchers in areas related to the program.  The workshop will also include a professional development session.

This workshop is open to all mathematicians.

Updated on Feb 13, 2020 05:01 PM PST
37. # WorkshopIntroductory Workshop: Random and Arithmetic Structures in Topology

Organizers: Jeffrey Brock (Yale University), Michelle Bucher (Université de Genève), LEAD Alan Reid (Rice University)
Geometry, Topology and Arithmeticity

The use of dynamical invariants has long been a staple of geometry and topology, from rigidity theorems, to classification theorems, to the general study of lattices and of the mapping class group. More recently, random structures in topology and notions of probabilistic geometric convergence have played a critical role in
testing the robustness of conjectures in the arithmetic setting.

In this introductory workshop, we will bring together junior and senior researchers in order to provide a mix of introductory lectures as well as reporting on more recent progress in topics from this diverse range of subjects.

Updated on Jun 17, 2019 08:13 AM PDT
38. # WorkshopStructure and randomness in locally symmetric spaces

Organizers: Nicolas Bergeron (École Normale Supérieure), Lewis Bowen (University of Texas, Austin), Yizhaq Gelander (Weizmann Institute of Science), LEAD Alan Reid (Rice University), Abigail Thompson (University of California, Davis)
Structure in a locally symmetric space by Jos Leys

The study of discrete subgroups of Lie groups and the associated locally symmetric manifolds has a long and rich history, with powerful interconnections between the geometry of the locally symmetric space, topology of towers of its finite covers, and number-theoretic aspects. More recently dynamical and probabilistic techniques have been fruitfully employed to study these groups and spaces.  The workshop will take stock of recent developments in these highly active fields from a variety of backgrounds.

Updated on Jun 06, 2019 09:08 AM PDT
39. # WorkshopTopical Workshop: Decidability, definability and computability in number theory

Organizers: Julia Knight (University of Notre Dame), François Loeser (Université de Paris VI (Pierre et Marie Curie)), Maryanthe Malliaris (University of Chicago), LEAD Thomas Scanlon (University of California, Berkeley)
Title page of Diophantus' Arithmetica - ETH Zurich

The conference will focus broadly on interactions of problems in number theory with definability from model theory and decidability from computability theory. This is the final program conference for our semester and will serve to showcase significant recent work in the area including the developments during the program.  We hope the conference will also provide an occasion to reflect on the key future directions and open problems in this emerging area, and thus to direct the momentum of the semester towards future work.

Updated on Mar 04, 2020 11:39 AM PST
40. # ProgramMathematical problems in fluid dynamics

Organizers: Thomas Alazard (Ecole Normale Supérieure Paris-Saclay; Centre National de la Recherche Scientifique (CNRS)), Hajer Bhouri (Université Paris-Est Créteil Val-de-Marne; Centre National de la Recherche Scientifique (CNRS)), Mihaela Ifrim (University of Wisconsin-Madison), Igor Kukavica (University of Southern California), David Lannes (Université de Bordeaux I; Centre National de la Recherche Scientifique (CNRS)), LEAD Daniel Tataru (University of California, Berkeley)

Fluid dynamics is one of the classical areas of partial differential equations, and has been the subject of extensive research over hundreds of years. It is perhaps one of the most challenging and exciting fields of scientific pursuit simply because of the complexity of the subject and the endless breadth of applications.

The focus of the program is on incompressible fluids, where water is a primary example. The fundamental equations in this area are the well-known Euler equations for inviscid fluids, and the Navier-Stokes equations for the viscous fluids. Relating the two is the problem of the zero viscosity limit, and its connection to the phenomena of turbulence. Water waves, or more generally interface problems in fluids, represent another target area for the program. Both theoretical and numerical aspects will be considered.

Updated on Apr 25, 2019 02:32 PM PDT
41. # WorkshopConnections Workshop: Mathematical problems in fluid dynamics

Organizers: Hajer Bhouri (Université Paris-Est Créteil Val-de-Marne; Centre National de la Recherche Scientifique (CNRS)), Juhi Jang (University of Southern California), LEAD Anna Mazzucato (Pennsylvania State University), Sijue Wu (University of Michigan)
Image by Noomann Bassou

This workshop will feature talks by prominent female mathematicians whose research lies in and interfaces with mathematical fluids featuring water waves,  free boundaries, fluid structures,  viscous fluids and turbulence. The talks will be appropriate for graduate students, post-docs, and researchers in areas above mentioned. There will also be a panel discussion and a contributed poster session. This workshop is open to all mathematicians.

Updated on Feb 20, 2020 11:31 AM PST
42. # WorkshopIntroductory Workshop: Mathematical problems in fluid dynamics

Organizers: Nicolas Burq (Université de Paris XI), Anne-Laure Dalibard (Université de Paris VI (Pierre et Marie Curie)), Jean Marc Delort (Université de Paris XIII (Paris-Nord)), LEAD Mihaela Ifrim (University of Wisconsin-Madison), Irena Lasiecka (University of Memphis), Vladimir Sverak (University of Minnesota Twin Cities)

The workshop will address topics in the PDE analysis of the basic equations of the incompressible fluid dynamics (the Euler equations for inviscid flows, the Navier Stokes equations for viscous flows), interface problems (water waves), and other related equations. Open problems and connections to related branches of mathematics will be discussed, including the phenomena of turbulence and the zero viscosity limit. Both theoretical and numerical aspects of these topics will be considered. There will be some colloquium style lectures as well as shorter research talks. The workshop is open to all.

Updated on Nov 25, 2019 01:09 PM PST
43. # WorkshopRecent Developments in Fluid Dynamics

Organizers: Thomas Alazard (Ecole Normale Supérieure Paris-Saclay; Centre National de la Recherche Scientifique (CNRS)), Hajer Bhouri (Université Paris-Est Créteil Val-de-Marne; Centre National de la Recherche Scientifique (CNRS)), Mihaela Ifrim (University of Wisconsin-Madison), Igor Kukavica (University of Southern California), David Lannes (Université de Bordeaux I; Centre National de la Recherche Scientifique (CNRS)), LEAD Daniel Tataru (University of California, Berkeley)
Water waves

The aim of the workshop is to bring together a broad array of researchers working on incompressible fluid dynamics. Some of the key topics to be covered are Euler flows, Navier Stokes equations as well as water wave flows and associated model equations. Some emphasis will also be placed on numerical analysis of the above evolutions.

Updated on Jun 18, 2019 09:54 AM PDT
44. # WorkshopHot Topics: Topological Insights in Neuroscience

Organizers: Carina Curto (Pennsylvania State University), Chad Giusti (University of Delaware), LEAD Kathryn Hess (École Polytechnique Fédérale de Lausanne (EPFL)), Ran Levi (University of Aberdeen)
Image created by Nicolas Antille, of the visualization team of the Blue Brain Project at EPFL

The talks in this workshop will present a wide array of current applications of topology in neuroscience, including classification and synthesis of neuron morphologies, analysis of synaptic plasticity, algebraic analysis of the neural code, topological analysis of neural networks and their dynamics, topological decoding of neural activity, diagnosis of traumatic brain injuries, and topological biomarkers for psychiatric disease. Some of the talks will be devoted to promising new directions in algebraic topology that have been inspired by neuroscience.

Updated on Nov 27, 2019 01:57 PM PST
45. # ProgramUniversality and Integrability in Random Matrix Theory and Interacting Particle Systems

Organizers: LEAD Ivan Corwin (Columbia University), Percy Deift (New York University, Courant Institute), Ioana Dumitriu (University of Washington), Alice Guionnet (École Normale Supérieure de Lyon), Alexander Its (Indiana University-Purdue University Indianapolis), Herbert Spohn (Technische Universität München), Horng-Tzer Yau (Harvard University)

The past decade has seen tremendous progress in understanding the behavior of large random matrices and interacting particle systems. Complementary methods have emerged to prove universality of these behaviors, as well as to probe their precise nature using integrable, or exactly solvable models. This program seeks to reinforce and expand the fruitful interaction at the interface of these areas, as well as to showcase some of the important developments and applications of the past decade.

Updated on Apr 24, 2019 03:08 PM PDT
46. # WorkshopIntroductory Workshop: Universality and Integrability in Random Matrix Theory and Interacting Particle Systems

Organizers: Gerard Ben Arous (New York University, Courant Institute), Alice Guionnet (École Normale Supérieure de Lyon), Sylvia Serfaty (New York University, Courant Institute), Horng-Tzer Yau (Harvard University)

The introductory workshop aims at providing participants with an overview of some of the recent developments in the topics of the semester, with a particular emphasis on universality and applications. This includes universality for Wigner matrices and band matrices and quantum unique ergodicity, universality for beta ensembles and log/coulomb gases, KPZ universality class, universality in interacting particle systems, the connection between random matrices and number theory.

Updated on Mar 19, 2020 11:30 AM PDT
47. # WorkshopIntegrable structures in random matrix theory and beyond

Organizers: LEAD Jinho Baik (University of Michigan), Alexei Borodin (Massachusetts Institute of Technology), Tamara Grava (University of Bristol; SISSA), Alexander Its (Indiana University-Purdue University Indianapolis), Sandrine Péché (Université de Paris VII (Denis Diderot))
Image by Alexei Borodin.

This workshop will focus on the integrable aspect of random matrix theory and other related probability models such as random tilings, directed polymers, and interacting particle systems. The emphasis is on communicating diverse algebraic structures in these areas which allow the asymptotic analysis possible. Some of such structures are determinantal point processes, Toeplitz and Hankel determinants, Bethe ansatz, Yang-Baxter equation, Karlin-McGregor formula, Macdonald process, and stochastic six vertex model.

Updated on Jul 31, 2019 03:22 PM PDT
48. # ProgramThe Analysis and Geometry of Random Spaces

Organizers: LEAD Mario Bonk (University of California, Los Angeles), Joan Lind (University of Tennessee), Steffen Rohde (University of Washington), Eero Saksman (University of Helsinki), Fredrik Viklund (Royal Institute of Technology), Jang-Mei Wu (University of Illinois at Urbana-Champaign)

This program is devoted to the investigation of universal analytic and geometric objects that arise from natural probabilistic constructions, often motivated by models in mathematical physics. Prominent examples for recent developments are the Schramm-Loewner evolution, the continuum random tree, Bernoulli percolation on the integers,  random surfaces produced by Liouville Quantum Gravity, and Jordan curves and dendrites obtained from random conformal weldings and laminations. The lack of regularity of these random structures often results in a failure of classical methods of analysis. One goal of this program is to enrich the analytic toolbox to better handle these rough structures.

Updated on Nov 20, 2019 02:12 PM PST
49. # ProgramComplex Dynamics: from special families to natural generalizations in one and several variables

Organizers: LEAD Sarah Koch (University of Michigan), Jasmin Raissy (Institut de Mathématiques de Toulouse), Dierk Schleicher (Jacobs University Bremen), Mitsuhiro Shishikura (Kyoto University), Dylan Thurston (Indiana University)
The mating of these two dendritic Julia sets is equal to the Julia set of a rational map of degree 2; that Julia set is equal to the entire Riemann sphere.

Holomorphic dynamics is a vibrant field of mathematics that has seen profound progress over the past 40 years. It has numerous interconnections to other fields of mathematics and beyond.

Our semester will focus on three selected classes of dynamical systems: rational maps (postcritically finite and beyond); transcendental maps; and maps in several complex variables. We will put particular emphasis on the interactions between each these, and on connections with adjacent areas of mathematics.

Updated on Nov 20, 2019 02:12 PM PST
50. # ProgramFloer Homotopy Theory

Organizers: Mohammed Abouzaid (Columbia University), Andrew Blumberg (University of Texas, Austin), Kristen Hendricks (Rutgers University), Robert Lipshitz (University of Oregon), LEAD Ciprian Manolescu (Stanford University), Nathalie Wahl (University of Copenhagen)
Illustrated by Nathalie Wahl

The development of Floer theory in its early years can be seen as a parallel to the emergence of algebraic topology in the first half of the 20th century, going from counting invariants to homology groups, and beyond that to the construction of algebraic structures on these homology groups and their underlying chain complexes.  In continuing work that started in the latter part of the 20th century, algebraic topologists and homotopy theorists have developed deep methods for refining these constructions, motivated in large part by the application of understanding the classification of manifolds. The goal of this program is to relate these developments to Floer theory with the dual aims of (i) making progress in understanding symplectic and low-dimensional topology, and (ii) providing a new set of geometrically motivated questions in homotopy theory.

Updated on Nov 25, 2019 01:27 PM PST
51. # ProgramAnalytic and Geometric Aspects of Gauge Theory

Organizers: Laura Fredrickson (Stanford University), Rafe Mazzeo (Stanford University), Tomasz Mrowka (Massachusetts Institute of Technology), Laura Schaposnik (University of Illinois at Chicago), LEAD Thomas Walpuski (Michigan State University)

The mathematics and physics around gauge theory have, since their first interaction in the mid 1970’s, prompted tremendous developments in both mathematics and physics.  Deep and fundamental tools in partial differential equations have been developed to provide rigorous foundations for the mathematical study of gauge theories.  This led to ongoing revolutions in the understanding of manifolds of dimensions 3 and 4 and presaged the development of symplectic topology.  Ideas from quantum field theory have provided deep insights into new directions and conjectures on the structure of gauge theories and suggested many potential applications.  The focus of this program will be those parts of gauge theory which hold promise for new applications to geometry and topology and require development of new analytic tools for their study.

Updated on Feb 05, 2020 10:22 AM PST
52. # ProgramAlgebraic Cycles, L-Values, and Euler Systems

Organizers: Henri Darmon (McGill University), Ellen Eischen (University of Oregon), LEAD Benjamin Howard (Boston College), David Loeffler (University of Warwick), Christopher Skinner (Princeton University), Sarah Zerbes (University College), Wei Zhang (Massachusetts Institute of Technology)
Some Gaussian periods for the 255,255-th cyclotomic extension. Image credit: E. Eischen, based on earlier work by W. Duke, S. R. Garcia, T. Hyde, and R. Lutz

The fundamental conjecture of Birch and Swinnerton-Dyer relating the Mordell–Weil ranks of elliptic curves to their L-functions is one of the most important and motivating problems in number theory. It resides at the heart of a collection of important conjectures (due especially to Deligne, Beilinson, Bloch and Kato) that connect values of L-functions and their leading terms to cycles and Galois cohomology groups.

The study of special algebraic cycles on Shimura varieties has led to progress in our understanding of these conjectures. The arithmetic intersection numbers and the p-adic regulators of special cycles are directly related to the values and derivatives of L-functions, as shown in the pioneering theorem of Gross-Zagier and its p-adic avatars for Heegner points on modular curves. The cohomology classes of special cycles (and related constructions such as Eisenstein classes) form the foundation of the theory of Euler systems, providing one of the most powerful methods known to prove vanishing or finiteness results for Selmer groups of Galois representations.

The goal of this semester is to bring together researchers working on different aspects of this young but fast-developing subject, and to make progress on understanding the mysterious relations between L-functions, Euler systems, and algebraic cycles.

Updated on Feb 25, 2020 11:41 AM PST

1. # SeminarWednesday Online Seminar: Topological Phases and Topological Field Theories

Updated on Apr 02, 2020 01:54 PM PDT
2. # SeminarTuesday Online Seminar: Derived stacks as infinity-groupoids in categories of fibrant objects

Updated on Mar 30, 2020 11:17 AM PDT
3. # WorkshopCritical Issues in Mathematics Education 2020: Today’s Mathematics, Social Justice, and Implications for Schools

Organizers: Meredith Broussard (New York Unviersity), Victor Donnay (Bryn Mawr College), Courtney Ginsberg (Math for America), Luis Leyva (Vanderbilt University), Candice Price (Smith College), Chris Rasmussen (San Diego State University), LEAD Katherine Stevenson (California State University, Northridge), William Tate (Washington University in St. Louis)

On March 27, a portion of the Critical Issues in Mathematics Education 2020: Today’s Mathematics, Social Justice, and Implications for Schools workshop will be streamed online via Zoom. Further talks may be scheduled at a later date, and you will be notified when we know more.

Please see the schedule below and the link for the Zoom call.

Friday 3/27: Starting at 12pm PST (3pm eastern time)

12:00p - 1:00p
Nicol Turner Lee, Brookings Inst., Center for Tech Innov. -  Unconscious Bias
Saber Khan, Processing Foundation, leader of #EthicalCS -  Identity & Ethics

https://msri.zoom.us/j/727516524
Join by phone:
US: +1 669 900 6833 or +1 346 248 7799
Webinar ID: 727 516 524

A formal Notice of Change letter is available here, which can be shared with your institution, funding agency, and others.

Updated on Mar 27, 2020 02:02 PM PDT
4. # SeminarOnline Grad Student + Postdoc Professional Development Seminar: How to design a project?

Created on Mar 25, 2020 09:27 AM PDT
5. # Workshop[Moved Online] (∞, n)-categories, factorization homology, and algebraic K-theory

Organizers: LEAD Clark Barwick (University of Edinburgh), David Gepner (University of Melbourne), David Nadler (University of California, Berkeley), Marcy Robertson (University of Melbourne)

The link to this online workshop is: https://msri.zoom.us/j/999860976

This workshop will focus on recent developments in factorization homology, parametrized homotopy theory, and algebraic K-theory.  These seemingly disparate topics are unified by a common methodology, which leverages universal properties and unforeseen descent by way of higher category theory. Furthermore, they enjoy powerful and complementary roles in application to the cyclotomic trace.  This workshop will be a venue for experts in these areas to present new results, make substantive connections across fields, and suggest and contextualize outstanding questions and problems.  It will consist of 4 two-part lecture series and 10 one-hour talks. The lecture series will be given by Thomas Nikolaus, Akhil Mathew, David Ben-Zvi and a split Martina Rovelli and Viktoriya Ozornova.

Updated on Mar 20, 2020 03:42 PM PDT
6. # Workshop[Moved Online] Critical Issues in Mathematics Education 2020: Today’s Mathematics, Social Justice, and Implications for Schools

Organizers: Meredith Broussard (New York Unviersity), Victor Donnay (Bryn Mawr College), Courtney Ginsberg (Math for America), Luis Leyva (Vanderbilt University), Candice Price (Smith College), Chris Rasmussen (San Diego State University), LEAD Katherine Stevenson (California State University, Northridge), William Tate (Washington University in St. Louis)

On March 20, a portion of the Critical Issues in Mathematics Education 2020: Today’s Mathematics, Social Justice, and Implications for Schools workshop will be streamed online via Zoom. Further talks may be scheduled at a later date, and you will be notified when we know more.

Please see the schedule below and the link for the Zoom call.

Friday 3/20: Starting at 12pm PST (3pm eastern time)

12:00p - 12:45p Lisa Goldberg, Hot Hands: What Data Science Can (and Can't) Tell Us About Basketball Trends
12:45p - 1:00p Discussion with Lisa and Kate on: What Bayes tells us about our ability to reason about randomness
https://msri.zoom.us/j/719968313
Join by phone:
US: +1 669 900 6833 or +1 346 248 7799
Webinar ID: 719 968 313

A formal Notice of Change letter is available here, which can be shared with your institution, funding agency, and others.

Updated on Mar 23, 2020 02:18 PM PDT
7. # Workshop[Moved Online] Tensor categories and topological quantum field theories

Organizers: Scott Morrison (Australian National University), Eric Rowell (Texas A & M University), LEAD Claudia Scheimbauer (TU München), Christopher Schommer-Pries (University of Notre Dame)
Topological field theory studies the interplay of algebraic and topological structure (image credit Kevin Walker)

***Due to the COVID-19 virus outbreak, the 2020 Tensor categories and topological quantum field theories workshop will no longer be held onsite at MSRI, rather it will take place online from March 16-20 as scheduled***

The decision to move this workshop online is based on the available scientific data on COVID-19, and the strong advice from experts to avoid gatherings of large groups.

A formal Notice of Change letter is available here, which can be shared with your institution, funding agency, and others.

Updated on Mar 13, 2020 04:52 PM PDT
8. # SeminarHC & QS - Graduate Student Seminar: There are 3 kinds of symmetric monoidal $\infty$-category with duals and finite colimits & Manifold tensor categories

Updated on Mar 06, 2020 02:23 PM PST
9. # SeminarQS - Seminar: A classification of fusion categories generated by a small normal object

Updated on Mar 11, 2020 12:14 PM PDT
10. # SeminarHC & QS - Factorization Homology Seminar: Link factorization homology and quantum knot invariants

Updated on Mar 10, 2020 08:34 AM PDT
11. # Workshop[Moved Online] Critical Issues in Mathematics Education 2020: Today’s Mathematics, Social Justice, and Implications for Schools

Organizers: Meredith Broussard (New York Unviersity), Victor Donnay (Bryn Mawr College), Courtney Ginsberg (Math for America), Luis Leyva (Vanderbilt University), Candice Price (Smith College), Chris Rasmussen (San Diego State University), LEAD Katherine Stevenson (California State University, Northridge), William Tate (Washington University in St. Louis)

On March 12 and March 13, portions of the Critical Issues in Mathematics Education 2020: Today’s Mathematics, Social Justice, and Implications for Schools workshop will be streamed online via Zoom. Only the talks below will are scheduled at this time.  Further talks may be scheduled at a later date, and you will be notified when we know more.

Please see the schedule below, as well as links to the two sessions.

Thursday 3/12: Starting at 9am PST (noon eastern time)

9:00 - 9:10 Welcoming remarks
9:10 - 9:15 Introduction to CIME 2020 plan and speaker David Daley
9:15 - 9:55 David Daley, Why Your Vote Doesn't Count
9:55 - 10:00 Kate Stevenson, introduction of activity
10:00-10:30 Mathical Book Prize Announcement
https://msri.zoom.us/j/833010028
Join by phone:
US: +1 669 900 6833 or +1 929 436 2866
Webinar ID: 833 010 028

Friday 3/13: Starting at 9am PST (noon eastern time)
9:00 - 9:05 Introduction of speaker Wesley Pegden
9:05 - 9:45 Wesley Pegden, Bringing Mathematics to the Courtroom
9:45 - 10:00 Q&A
https://msri.zoom.us/j/359902928
Join by phone:
US: +1 669 900 6833 or +1 929 436 2866
Webinar ID: 359 902 928

A formal Notice of Change letter is available here, which can be shared with your institution, funding agency, and others.

Updated on Mar 11, 2020 03:46 PM PDT
12. # SeminarPyknotic / Condensed Seminar: Animating pyknotic sets (AKA pyknotic spaces)

Updated on Mar 09, 2020 05:11 PM PDT
13. # SeminarPyknotic / Condensed Seminar: Pyknotic abelian groups

Updated on Mar 09, 2020 05:08 PM PDT
14. # SeminarRelative Geometric Langlands (Part 1)

Updated on Mar 09, 2020 05:17 PM PDT
15. # SeminarRelative Geometric Langlands (Part 2)

Updated on Mar 10, 2020 08:40 AM PDT
16. # SeminarJoint HC & QS Colloquium: What is...Geometric Langlands?

Updated on Mar 03, 2020 02:38 PM PST
17. # SeminarHC & QS - Configuration spaces and Diffeomorphisms: The intrinsic formality of E_n operads

Updated on Mar 06, 2020 12:23 PM PST
18. # SeminarSeminar and Wprkshop Organizer Meeting

Created on Mar 09, 2020 11:03 AM PDT
19. # SeminarHC & QS - Factorization homology with defects, and Poincare'/Koszul duality

Updated on Feb 28, 2020 08:34 AM PST
20. # SeminarQS - Seminar: On the braid group representations coming from weakly group-theoretical fusion categories

Updated on Feb 27, 2020 09:28 AM PST
21. # SeminarPyknotic / Condensed Seminar: Pyknotic sets

Created on Feb 27, 2020 12:24 PM PST
22. # SeminarHC Seminar - Operadic Category Theory: Decomposition spaces, hereditary species, decalage & (Op)fibrations and Grothendieck's construction

Updated on Feb 27, 2020 12:14 PM PST
23. # SeminarHC & QS - Pyknotic / Condensed Seminar: Who cares about pyknosis?

Updated on Feb 27, 2020 10:52 AM PST
24. # Seminar(∞,2)-categories: Open Problems

Created on Feb 28, 2020 11:26 AM PST
25. # SeminarJoint HC & QS Colloquium: The last of the toy models

Updated on Feb 25, 2020 04:40 PM PST
26. # SeminarHC & QS - Configuration spaces and Diffeomorphisms: Configuration space integrals and realization maps

Updated on Feb 27, 2020 02:33 PM PST
There are more then 25 past events. Please go to Past Events to see all past events.