Current Seminars
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Quantum A-polynomials and cluster quantization
Location: SLMath: Online/Virtual, Baker Board Room Speakers: David Jordan (University of Edinburgh)In this talk I'll explain work in progress with Jennifer Brown to bring the Fock-Goncharov quantization ideas together with factorisation homology to give a construction of the so-called Quantum A polynomial of knots.
Updated on Jul 19, 2024 09:54 AM PDT
Upcoming Seminars
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Lightning Talks
Location: SLMath: Eisenbud Auditorium, Online/Virtual Speakers: Nicolás Andruskiewitsch (Universidad Nacional de Cordoba), David Jordan (University of Edinburgh), Dmitri Nikshych (University of New Hampshire), Victor Ostrik (University of Oregon), Futaba Sato (The University of Tokyo), Noah Snyder (Indiana University), Ziyun Xu (University of Tokyo)Updated on Jul 10, 2024 10:49 AM PDT -
From link homology to TFTs
Location: SLMath: Eisenbud Auditorium, Online/Virtual Speakers: Paul Wedrich (Universität Hamburg)Skein theory offers several plausible strategies for extending link homology theories, such as Khovanov homology, to topological field theories in 4 or 5 dimensions. In this talk, I will focus on a categorified analog of a TFT of Turaev-Viro type. Joint work with Matthew Hogancamp and David Rose.
Updated on Jul 23, 2024 03:12 PM PDT -
Flatness of alpha-induced bi-unitary connections and commutativity of Frobenius algebras
Location: SLMath: Eisenbud Auditorium, Online/Virtual Speakers: Yasuyuki Kawahigashi (the University of Tokyo)Alpha-induction is a tensor functor arising from a Frobenius algebra on a braided fusion category to a new fusion category using braiding. A bi-unitary connection consists of partial data of generalized quantum 6j-symbols and describes a commuting square in subfactor theory. A finite family of bi-unitary connections gives operator-algebraic description of a fusion category. Last year, I showed that if we have a commutative Frobenius algebra, then the resulting bi-unitary connection from alpha-induction is flat, which means that quantum 6j-symbols are in a certain canonical form. I now show that the converse of this statement also holds.
Updated on Jul 24, 2024 01:57 PM PDT -
Higher Verlinde categories
Location: SLMath: Eisenbud Auditorium, Online/Virtual Speakers: Victor Ostrik (University of Oregon)In this talk I will describe some relatively new symmetric tensor categories in positive characteristic. We will discuss their construction and known and conjectural properties.
Updated on Jul 26, 2024 11:30 AM PDT -
New invariants of braided fusion categories: Tannakian radical and mantle
Location: SLMath: Eisenbud Auditorium, Online/Virtual Speakers: Dmitri Nikshych (University of New Hampshire)We explain how braided fusion categories can be canonically reconstructed as gaugings of categories of a particular type, which we call reductive. This leads to a parameterization of braided fusion categories that could be helpful for classification purposes. The key role is played by a new notion of the Tannakian radical. This is a joint work with Jason Green.
Updated on Jul 25, 2024 11:17 AM PDT -
Square roots of modular fusion categories
Location: SLMath: Eisenbud Auditorium, Online/Virtual Speakers: Andrew Schopieray (University of Alberta)Updated on Jul 25, 2024 11:14 AM PDT -
Lecture
Location: SLMath: Eisenbud Auditorium, Online/Virtual Speakers: Siu-Hung Ng (Louisiana State University)Updated on Jul 10, 2024 12:52 PM PDT -
Lecture
Location: SLMath: Eisenbud Auditorium, Online/Virtual Speakers: Terry Gannon (University of Alberta)Updated on Jul 10, 2024 01:02 PM PDT -
Lecture
Location: SLMath: Eisenbud Auditorium, Online/Virtual Speakers: Pinhas Grossman (University of New South Wales)Updated on Jul 10, 2024 01:13 PM PDT -
Lecture
Location: SLMath: Eisenbud Auditorium, Online/Virtual Speakers: Qing Zhang (University of California, Santa Barbara)Updated on Jul 10, 2024 01:15 PM PDT -
Lecture
Location: SLMath: Eisenbud Auditorium, Online/Virtual Speakers: Hans Wenzl (University of California, San Diego)Updated on Jul 22, 2024 08:43 AM PDT
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ADJOINT 2025
ADJOINT is a yearlong program that provides opportunities for U.S. mathematicians – especially those from the African Diaspora – to conduct collaborative research on topics at the forefront of mathematical and statistical research. Participants will spend two weeks taking part in an intensive collaborative summer session at SLMath (formerly MSRI). The two-week summer session for ADJOINT 2025 will take place June 16-27, 2025 in Berkeley, California. Researchers can participate in either of the following ways: (1) joining ADJOINT small groups under the guidance of some of the nation's foremost mathematicians and statisticians to expand their research portfolio into new areas, or (2) applying to Self-ADJOINT as part of an existing or newly-formed independent research group to work on a new or established research project. Throughout the following academic year, the program provides conference and travel support to increase opportunities for collaboration, maximize researcher visibility, and engender a sense of community among participants.
Updated on May 22, 2024 10:52 AM PDT
Past Seminars
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Seminar Deformations of tensor categories generated by one object
Updated on Jul 22, 2024 07:54 AM PDT -
Seminar On algebraisation of low-dimensional Topology
Updated on Jul 19, 2024 11:30 AM PDT -
Seminar Lie theory in tensor categories with applications to modular representation theory
Updated on Jul 24, 2024 08:14 AM PDT -
Seminar Integrability from Categories?
Updated on Jul 19, 2024 07:55 AM PDT -
Seminar A braided tensor 2-category from link homology
Updated on Jul 19, 2024 12:04 PM PDT -
Seminar Subfactors and quantum symmetries
Updated on Jul 18, 2024 10:57 AM PDT -
Seminar Quantum Symmetries on non-commutative tori
Updated on Jul 18, 2024 08:54 AM PDT -
Seminar Lecture: "An efficient* classical algorithm for Tambara-Yamagami state-sum invariants of 3-manifolds"
Updated on Jul 10, 2024 08:52 AM PDT -
Seminar Lecture: "Continuous quantum symmetries"
Updated on Jul 09, 2024 02:05 PM PDT -
Seminar Lecture
Updated on Jul 15, 2024 08:20 AM PDT -
Seminar Lecture
Updated on Jul 09, 2024 01:20 PM PDT -
Seminar Lecture
Updated on Jul 09, 2024 01:18 PM PDT -
Seminar Lecture
Updated on Jul 09, 2024 01:00 PM PDT -
Seminar Lightning Talks
Updated on Jul 10, 2024 10:46 AM PDT -
Seminar Welcome to SLMath
Updated on Jul 11, 2024 11:24 AM PDT -
Seminar COMA Seminar: "Methods to Extend the Classical Multiplicities to General Ideals"
Updated on May 16, 2024 01:58 PM PDT -
Seminar COMA Working Group: Syzygies: "Minimal Resolutions and the Homology of Matching and Chessboard Complexes, by Victor Reiner and Joel Roberts"
Updated on May 16, 2024 01:56 PM PDT -
Seminar COMA Colloquium: "Towards an analogue of F-signature functions in mixed characteristic"
Updated on May 16, 2024 08:18 AM PDT -
Seminar "COMA Working Group: ""A second look at parasolid closure"" "
Updated on May 17, 2024 11:51 AM PDT -
Seminar COMA Special Topic: Mixed characteristic analogues of F-injective and Du Bois singularities"
Updated on May 15, 2024 12:37 PM PDT -
Seminar COMA Colloquium: "Koszul Binomial Edge Ideals"
Updated on May 13, 2024 08:27 AM PDT -
Seminar COMA/NAG Joint Graduate Student Seminar: "Factoriality of LSS ideals"
Updated on May 13, 2024 08:13 AM PDT -
Seminar COMA Seminar: "Singularities in Mixed Characteristic via Alterations"
Updated on May 09, 2024 03:14 PM PDT -
Seminar COMA Colloquium: "Singularities of ideals admitting a squarefree Gröbner degeneration"
Updated on May 09, 2024 02:44 PM PDT -
Seminar COMA Working Group: Quasi-F Splitting
Updated on Feb 09, 2024 01:22 PM PST -
Seminar COMA/NAG Joint Graduate Student Seminar
Updated on Feb 20, 2024 12:44 PM PST -
Seminar NAG Colloquium: "Projective stacks"
Updated on May 09, 2024 02:45 PM PDT -
Seminar COMA Working Group: Set Theoretic Complete Intersections
Updated on Feb 15, 2024 10:37 AM PST -
Seminar COMA Special Topic: "Some limitations of reduction mod p methods"
Updated on May 09, 2024 03:13 PM PDT -
Seminar Movie Night: "N is a number: a portrait of Paul Erdős"
Created on Apr 25, 2024 11:14 AM PDT