Videos

2025/04/30

Bertrand Patureau-Mirand

Weaving 4-Dimensional TQFTs with Ribbon Categories

2025/04/23

Ingo Runkel

Topological symmetries and their gaugings in 2d CFT and 3d TFT

2025/04/02

Clément Delcamp

Topological symmetry and duality in quantum lattice models

2025/02/05

Matthias Ludewig

The stringor bundle and the spinor bundle on loop space

2024/12/18

Theodoros Lagiotis

Noncompact 3d TQFTs from non-semisimple modular categories

2024/12/11

Maciej Borodzik

Equivariant Khovanov homotopy type

2024/11/20

Aaron Hofer

CFT/TFT correspondence beyond semisimplicity

2024/10/30

Ödül Tetik

Yoga with twisted stratifications

2024/10/16

William Stewart

Domain walls and oplax natural transformations

2024/10/09

Peter Kristel

2-vector bundles

2024/09/18

Thang Le

Algebraic structures of skein algebras

2024/09/11

Chris Elliott

Topological twists of superconformal field theory

2024/09/04

Raphaël Rouquier

2-Representation theory of gl(1|1)

2024/08/21

Tashi Walde

Assembly of constructible factorization algebras

2024/08/14

Clark Barwick

Factorization algebras in quite a lot of generality

2024/08/07

David Ayala

Factorization homology of higher categories

2024/07/31

Jackson Van Dyke

Geometric quantization, fusion categories, and Rozansky–Witten theory

2024/07/24

Anton Kapustin

Topological invariants of gapped states and cosheaves on sites

2024/07/17

Monica Vazirani

Skeins on tori

2024/07/10

Minghao Wang

Feynman graph integrals from topological-holomorphic theories and their applications

2024/06/26

Agnès Beaudry

Homotopy theory of parametrized quantum systems

2024/06/19

Catherine Meusburger

Quantum double models and Dijkgraaf-Witten TQFT with defects

2024/06/12

Yang Yang

RCFT correlators as equivalences of modular functors

2024/06/05

Nils Carqueville

Orbifold completion of 3-categories

2024/05/29

Thomas Wasserman

The Landau-Ginzburg / conformal field theory correspondence

2024/05/22

Christoph Schweigert

Traces and higher structures

2024/05/08

Pranav Pandit

Deformations of objects in higher categories

2024/05/02

Inbar Klang

An algebraic topology perspective on factorization homology

2024/04/24

Sebastian Schulz

Spectral networks and $G_2$

2024/04/17

Adrien Brochier

A classification of modular functors from generalized skein theory

2024/04/12

Jan-Willem van Ittersum

Shifted symmetric functions, quasimodular forms and Hamiltonian operators

2024/04/10

Cristina Anghel

A universal coloured Alexander invariant from configurations on ovals in the disc

2024/03/20

Marko Stošić

Combinatorics in knot-quiver correspondences

2024/03/06

Luuk Stehouwer

The Categorical Spin-Statistics Theorem: A TQFT Perspective

2024/02/21

Sam Gunningham

Skein theory and the geometric Langlands program

2024/02/07

Lukas Müller

Topological defects form higher dagger categories

2024/01/31

Nadia Ott

The super period map and the projectedness of supermoduli space

2024/01/24

Lukas Woike

An Introduction to Quantum Representations of Mapping Class Groups

2024/01/10

Marco De Renzi

Algebraic presentation of cobordisms and TQFTs

2023/12/14

Pedram Hekmati

Equivariant Floer homology and its applications

2023/12/06

Francesco Costantino

Stated skein modules of 3-manifolds and TQFTs

2023/09/20

Pavel Mnev

Why BF theory is not an Atiyah’s TQFT, and how the BV-BFV approach helps

2023/09/14

Kevin Walker

Low-dimensional $H$-bordism and $H$-modular TQFTs

2023/07/26

Anna Pachol

Quantum groups in the digital setting

2023/07/19

Fabian Hahner

Pure spinor techniques in (twisted) supergravity

2023/07/12

Pavel Etingof

Lie theory in tensor categories (with applications to modular representation theory)

2023/07/05

Surya Raghavendran

Twisted eleven-dimensional supergravity and infinite-dimensional exceptional simple super Lie algebras

2023/06/28

Patrick Kinnear

Varying the non-semisimple Crane–Yetter theory over the character stack

2023/06/21

Jennifer Brown

Defect Skein Theories

2023/05/24

Markus Upmeier

Invertible TQFTs and Atiyah–Singer index theory

2023/05/17

Benjamin Haïoun

Non-semisimple WRT as non-compact fully extended relative TQFTs

2023/05/10

David Ben-Zvi

A TQFT POV on L-functions

2023/05/03

Dmitri Nikshych

Witt groups of braided fusion categories and minimal non-degenerate extensions

2023/04/26

Julie Bergner

Models for $(\infty,n)$-categories with discreteness conditions

2023/04/19

Thomas Creutzig

Ribbon categories associated to gl(1|1)

2023/04/12

Ivan Contreras

Frobenius objects in the category of spans and the symplectic category

2023/04/05

Kevin Walker

Two approaches to a universal state sum

2023/03/22

Niklas Garner

VOAs and Twisted Chern-Simons-Matter TQFTs

2023/03/01

Matt Young

$U_q(\mathfrak{gl}(1 \vert 1))$ and $U(1 \vert 1)$ Chern-Simons theory

2023/02/15

Dan Freed

What is an anomaly?

2023/02/08

James Macpherson

Locally wide quasi-fiat 2-categories and their coalgebra 2-representations

2023/01/25

Marco Mackaay

2-Representations of affine type A Soergel bimodules: some observations and examples

2022/12/09

Zoran Petric

A diagrammatic presentation of the category 3Cob

2022/12/07

Konstantin Eder

Super Cartan geometry and (loop) quantum supergravity

2022/11/30

Konrad Waldorf

A representation of the string 2-group

2022/11/16

Fiona Torzewska

Topological quantum field theories and homotopy cobordisms

2022/10/26

Marko Vojinovic

Insights into the Standard Model and quantum gravity from higher gauge theory

2022/09/21

Pavel Safronov

Skein modules and 4d TQFTs

2022/09/14

Marina Logares

Hitchin systems

2022/06/29

Radmila Sazdanovic

Bilinear pairings on two-dimensional cobordisms and generalizations of the Deligne category

2022/06/15

Marc Lackenby

Knot theory and machine learning

2022/06/08

Álvaro del Pino Gómez

h-Principles and applications to distributions

2022/05/25

Simone Noja

The de Rham / Spencer double complex and the geometry of forms on supermanifolds

2022/05/17

Eugene Rabinovich

Classical Bulk-Boundary Correspondences via Factorization Algebras

2022/05/09

Nezhla Aghaei

Combinatorial quantisation of Supergroup Chern–Simons Theory

2022/05/04

Jamie Vicary

Introducing homotopy.io: A proof assistant for geometrical higher category theory

2022/04/27

Pavel Mnev

On the Fukaya-Morse $A_\infty$ category

2022/04/13

Ángel González Prieto

Topological Quantum Field Theories for Character Stacks

2022/04/06

Yonatan Harpaz

The cobordism hypothesis in dimension 1

2022/03/30

Dmitri Pavlov

The geometric cobordism hypothesis

2022/03/16

Christoph Dorn

Manifold diagrams: Poincaré duality, singularities, and smooth structures

2022/03/09

Manuel Araújo

String diagrams for higher categories

2022/02/16

Daniel Grady

Deformation classes of invertible field theories and the Freed-Hopkins conjecture.

2022/02/02

Emily Cliff

Moduli spaces of principal 2-group bundles and a categorification of the Freed–Quinn line bundle

2022/01/26

Jeffrey C. Morton

The Fock Pseudomonad: Groupoidifying Second Quantization

2022/01/19

Giorgio Trentinaglia

Simplicial vector bundles and representations up to homotopy

2021/12/15

Vladimir M. Stojanovic

Lie-algebraic aspects of quantum control: gate realization and W-to-GHZ state conversion

2021/11/17

Brian R. Williams

Exceptional super Lie algebras in twisted M-theory

2021/10/13

Tijana Radenković

Topological higher gauge theory — from 2BF to 3BF theory

2021/09/24

João Faria Martins

Quinn Finite Total Homotopy TQFT as a once-extended TQFT

2021/06/25

Fabian Haiden

Categorical Kähler Geometry

2021/06/18

Theo Johnson-Freyd

Higher S-matrices

2021/06/04

Ingmar Saberi

Twists of supergravity theories via algebraic geometry

2021/05/28

Dmitry Melnikov

Entanglement and complexity from TQFT

2021/05/21

Bruce Bartlett

Asymptotics of the classical and quantum $6j$ symbols

2021/05/14

Si Li

Geometry of Localized Effective Theories and Algebraic Index

2021/05/07

Christian Saemann

Adjusted Higher Gauge Theory: Connections and Parallel Transport

2021/04/16

Giordano Cotti

Quantum differential equations, qKZ difference equations, and helices.

2021/04/09

Roger Picken

Link invariants from finite crossed modules and a lifting of the Eisermann invariant

2021/03/12

Ikshu Neithalath

Skein Lasagna modules of 2-handlebodies

2021/03/05

Owen Gwilliam

Bulk-boundary correspondences with factorization algebras

2021/02/26

Ben Elias

Introduction to the Hecke category and the diagonalization of the full twist

2021/02/19

David Reutter

Semisimple topological field theories in even dimensions

2021/02/12

Florio M. Ciaglia

A groupoid-based perspective on quantum mechanics

2021/01/29

Severin Bunk

Universal Symmetries of Gerbes and Smooth Higher Group Extensions

2021/01/22

Renee Hoekzema

Manifolds with odd Euler characteristic and higher orientability

2021/01/15

Brent Pym

Multiple zeta values in deformation quantization

2021/01/08

Pedro Vaz

Categorification of Verma Modules in low-dimensional topology

2020/12/18

Penka Georgieva

Klein TQFT and real Gromov-Witten invariants

2020/12/11

Anna Beliakova

Cyclotomic expansions of the $gl_N$ knot invariants

2020/12/04

Victor Ostrik

Two dimensional topological field theories and partial fractions

2020/11/20

Tudor Dimofte

$3d$ A and B models and link homology

2020/11/13

Vladimir Dragović

Ellipsoidal billiards, extremal polynomials, and partitions

2020/11/06

Marco Mackaay

The double-centralizer theorem in 2-representation theory and its applications

2020/10/30

João Faria Martins

Crossed modules, homotopy 2-types, knotted surfaces and welded knots

2020/10/16

Miranda Cheng

Quantum modular forms and $3$-manifolds

2020/10/09

Alexander Shapiro

Cluster realization of quantum groups and higher Teichmüller theory

2020/10/02

Davide Masoero

Counting Monster Potentials

2020/09/25

André Henriques

Reps of relative mapping class groups via conformal nets

2020/09/11

Alexis Virelizier

Homotopy Quantum Field Theories

2020/07/24

Ezra Getzler

Gluing local gauge conditions in BV quantum field theory

2020/07/17

Pedro Boavida de Brito

Galois symmetries of knot spaces

2020/07/10

Ricardo Campos

The homotopy type of associative and commutative algebras

2020/07/03

Tom Sutherland

Mirror symmetry for Painlevé surfaces

2020/06/26

Marko Stošić

Rational and algebraic links and knots-quivers correspondence

2020/06/19

Mikhail Khovanov

Introduction to foam evaluation

2020/06/12

Antti Kupiainen

Integrability of Liouville Conformal Field Theory

2020/06/05

John Huerta

Bundle Gerbes on Supermanifolds

2020/05/29

Danica Kosanović

Knot invariants from homotopy theory

2020/05/22

Sergei Gukov

Hidden Algebraic Structures in Topology

2014/01/10

Mehmet Haluk Sengun

Mahler measures of \(A\)-polynomials of \(3\)-manifolds and special values of \(L\)-functions III

2014/01/09

Roger Picken

Some remarks on the non-commutative \(A\)-polynomial

2014/01/09

Mehmet Haluk Sengun

Mahler measures of \(A\)-polynomials of \(3\)-manifolds and special values of \(L\)-functions II

2014/01/08

Mehmet Haluk Sengun

Mahler measures of \(A\)-polynomials of \(3\)-manifolds and special values of \(L\)-functions I