**NEXT SEMINAR**

**Seminar 44 **

## Speakers:

14:00-15:00: Mateusz Stroinski (Uppsala University)
Tambara reconstruction

15:15-16:15: Jonas Nehme (University of Bonn)
Khovanov arc algebras for the periplectic Lie superalgebras

**HISTORY**

**2024**

**Seminar 43 **

## Speakers:

15:00-16:00: Jacek Krajczok
Invariants of q-deformed compact Lie groups

16:00-17:00: Davide Dal Martello
Quantum cluster varieties, quiver seizures, and GDAHA

**Seminar 42 **

## Speakers:

14:00-14:50: Tomasz Brzezinski (University of Swansea)
Lie algebras on affine spaces

15:00-15:50: Arne Van Antwerpen (UGent)
Quadratic algebras of left non-degenerate set-theoretic solutions of the Yang-Baxter equation

**2023**

**Seminar 41 **

## Speakers:

14:00-15:00: Severin Barmeier (University of Cologne)
A∞ deformations of extended Khovanov arc algebras

15:15-16:15: Samuel Hannah (Cardiff University)
Classifying Frobenius Algebras in Dijkgraaf-Witten Categories

**Seminar 40 **

## Speakers:

14:00-15:00: Rubén Martos Prieto (Université de Lille)
Equivariant Kasparov category and tt-geometry

15:15-16:15: Edmund Heng (IHES Paris)
A generalised McKay correspondence for fusion categories

**Seminar 39 **

## Speaker:

14:30-15:30: Lucas Hataishi (University of Oslo)
C*-algebraic factorization homology

**Seminar 38 **

## Speakers:

14:00-15:00: Mykola Khrypchenko (Universidade Federal de Santa Catarina)
Regular Hom-Lie structures on incidence algebras

15:15-16:15: Melvin Yeung (UHasselt)
Smooth morphisms and Cauchy-Kovalevskaya for Bialgebras

**Seminar 37 **

## Speakers:

14:00-15:00: Leonardo Maltoni (Paris)
Towards a Bernstein presentation of the affine Hecke category

15:15-16:15: Alexis Langlois-Rémillard (Ghent)
Uncoiled affine et periodic Temperley-Lieb algebras and their Wenzl-Jones idempotents

**Seminar 36 **

## Speakers:

14:00-15:00: Bob Yuncken
Crystallizing compact semisimple Lie groups

15:15-16:15: Simon Schmidt
Solution group representations as quantum symmetries of graphs

**Seminar 35 **

## Speakers:

14:00-15:00: David Jaklitsch (Hamburg)
Interaction of duals and pivotal structures with Morita theory

15:15-16:15: Eliezer Batista (Florianopolis)
Quantum Inverse Semigroups

**2022**

**Seminar 34 **

## Speakers:

13:00-14:00: Lukas Rollier (KU Leuven)
Quantum automorphism groups of connected locally finite graphs

14:15-15:15: Marco Mackaay (U. Algarve)
Finitary 2-representation theory

15:30-16:30: Benjamin Anderson-Sackaney (Université de Caen)
Relative Amenability, Amenability, and Coamenability of Coideals

**Seminar 33 **

## Speakers:

14:00-15:00: Jieru Zhu (UCLouvain)
Web deformations over superalgebras

15:00-16:00: Geoffrey Janssens (UCLouvain)
Comparing additive and monoidal categorification via Quantum Affine Algebras

**Seminar 32 **

## Speakers:

15:00-16:00: Bart Vlaar (Max Planck, Bonn)
The cylindrical nature of Drinfeld-Jimbo quantum groups and the origin of trigonometric K-matrices

16:00-17:00: István Heckenberger (Philipps-Universität Marburg)
A meeting of Nichols algebras and color Lie bialgebras

**Seminar 31 **

## Speakers:

14:00-15:00: Sugato Mukhopadhyay
Levi-Civita connections on bicovariant differential calculus

15:00-16:00: Réamonn Ó Buachalla (Mathematical Institute of Charles University in Prague)
Quantum Root Vectors and a Dolbeault Double Complex for the A-Series Quantum Flag Manifolds

16:00-17:00: Alessandro Carotenuto (Institute of Mathematics of the Czech Academy of Sciences in Prague)
Bimodule connections for line bundles over irreducible quantum flag manifolds

**Seminar 30 **

## Speakers:

14:00-15:00: Léo Schelstraete (UCLouvain)
Odd Khovanov homology and 2-supercategories

15:00-16:00: Piotr Soltan (University of Warsaw)
Quantum groups and factors

**Seminar 29 **

## Speakers:

14:00-15:00: Jari Desmet (UGent)
Non-associative Frobenius algebras for simple algebraic groups

15:00-16:00: Sira Gratz (University of Glasgow)
SL(k)-friezes from Cluster Algebras

**Seminar 28 **

## Speakers:

14:00-15:00: Joel Right Dzokou Talla (VUB)
Quantum SL(2,R) and its irreducible representations

15:00-16:00: Louis-Hadrien Robert (Université de Luxembourg)
Categorification of 1 and of the Alexander polynomial

**2021**

**Seminar 27 **

## Speakers:

14:00-15:00: Leandro Vendramin (VUB)
Groups, rings and the Yang-Baxter equation

15:00-16:00: Jacques Darné (UCLouvain)
Nilpotent quandles

**Seminar 26**

## Speakers:

14:00-15:00: Alfons Van Daele (KUL)
Finite quantum hypergroups

15:00-16:00: Johannes Berger (ULB)
Modified traces and monadic cointegrals for quasi-Hopf algebras

**2020**

# Seminar 25 - Canceled due to COVID-19 emergency

(18 March 2020 @ ULB (Room TBA))

## Speakers:

10:00-11:00: István Heckenberger
Lusztig's PBW bases from the perspective of braided Hopf algebras

11:00-12:00: Simon Lentner
New Borel subalgebras of quantum groups

## Speakers:

11:00-12:00: Laiachi El Kaoutit (Universidad de Granada)
Lie Algebroids, Groupoids and Hopf Algebroids: a brief introduction. (Presentation)

12:00-13:00: Ruslan Maksimau (Université Montpellier)
Geometric construction of DG-enhanced versions of nil-Hecke algebras

## Speakers:

14:00-15:00: Nicolas Crampé (Université Montpellier)
Schur-Weyl Duality and Racah Algebra

15:00-16:00: Hadewijch De Clercq (UGent)
Defining Relations for Quantum Symmetric Pair Coideals of Kac-Moody Type

**2019**

## Speakers:

11:00-12:00: José Gómez-Torrecillas
An example of a biseparable ring extension which is not Frobenius

12:00-13:00: Ehud Meir
Invariant theory, symmetric groups and Hopf algebras

## Speakers:

14:00-15:00: Stephen Moore
The Representation Theory of the finite and infinite Temperley-Lieb algebras

## Speakers:

10:45-11:35: Juliet Cooke (UCLouvain)
Skein Categories

11:55-12:45: Abel Lacabanne (UCLouvain)
Categorification of Z-modular data associated with complex reflection groups

## Speakers:

13:30-14:20: Tom De Medts (UGent):
Decomposition algebras and representation theory

14:35-15:25: Ruben Henrard (UHasselt)
Localizations of one-sided exact categories

15:40-16:30: Adam-Christiaan Van Roosmalen (UHasselt)
Deriving one-sided exact categories

## Speakers:

14:00-14:50: Haonan Zhang:
Idempotent states on Sekine quantum groups

15:00-15:50: Mateusz Wasilewski:
Quantum isomorphisms of graphs and monoidal equivalence

## Speakers:

11:00-11:50: Marco Matassa:
Kähler structures on quantum irreducible flag manifolds

12:00-12:50: Andrey Krutov:
Schubert calculus for quantum irreducible flag manifolds

## Speakers:

10:00-10:50: Daniel Tubbenhauer (University of Zurich)
A Tale of Dihedral groups SL(2), and beyond

11:00-11:50: Paolo Saracco (ULB)
One-sided Hopf algebras and Frobenius pairs of functors for Hopf
modules

**2018**

## Speakers:

14:00-14:50: Loïc Foissy (Calais)
Chromatic and Ehrhart polynomial, Combinatorial Hopf algebras

15:00-15:50: Alessandro Iraci (ULB)
The Delta Conjecture

# Seminar 14 (25 October 2018 @ VUB room D.1.07)

## Speakers:

Laura Maassen (RWTH Aachen University) (14:00-14:50)
The Intertwiner Space of Non-easy Group-theoretical Quantum Groups

Johan Konings (VUB) (15:00-15:50)
A Correspondence between Homogeneous and Galois Coactions of Hopf algebras

# Seminar 13 (6 and 7 September 2018)

## Speaker: Claudia Menini

6 September 2018 @ ULB Salle de Profs (11:00)
Heavy Separable Functors.

7 September 2018 @ VUB Room 6G324 (15:00)
Why Heavily Separable Functors? Comparing Monadic and adjoint decomposition.

## Speakers:

14:00 - 14:55: Eliezer Batista
Partial group actions on monoidal categories.

15:05 - 16:00: Bregje Pauwels
The tale site of the stable module category of a finite group

## Speakers:

14:00 - 14:55: Frank Taipe
Algebraic Transformation Quantum Groupoids

15:00 - 15:55: Réamonn Ò Buachalla
Schubert Calculus for Quantum Grassmannians

**2017**

## Speakers:

14:30 - 15:20: Andrea Appel (Edinburgh)
Quantum groups, braid groups and monodromy

15:30 - 16:20: Adrien Brochier (Hamburg)
Quantum character varieties

## Speakers:

14:30 - 15:20: Marco Matassa
On PBW-deformations of braided exterior algebras

15:30 - 16:20: Alexey Gordienko (VUB)
Equivalences of Hopf (co)module structures on algebras.

## Speakers:

11:00 - 12:00: Gabriella Böhm (Wigner Research Centre for Physics, Budapest) @ VUB
Hopf monads from lax functors

14:00 - 15:00: Tomasz Brzezinski (Swansea University,UK) @ ULB
Betwixt and between, neither a brace nor a ring.

15:15 - 16:15: Jürgen Fuchs (Karlstads Universitet, Karlstad) @ ULB
Correlators for non-semisimple conformal field theories.

## Speakers:

14:30 - 15:20: Matthias Valvekens (KU Leuven)
L2-Betti numbers for representation categories

15:30 - 16:20: Matthias Floré (VUB)
A field of quantum upper triangular matrices

## Speakers:

14:30 - 15:20: David Jordan (University of Edinburgh)
Dualizability and orientability for tensor and braided tensor categories

15:30 - 16:20: Alexis Virelizier (Université Lille 1)
Generalized Kuperberg invariants of 3-manifolds

## Speakers:

14:00-14:50 Grégoire Naisse (UCL)
Categorification of Verma modules

15:20-16:10 Ruslan Maksimau (Montpellier)
Higher level affine Hecke algebras

# Seminar 4 (20 februari 2017 @ UCL CYCL01)

## Speakers:

14:00-14:50 Johan Oinert (Blekinge Institute of Technology, Sweden)
Epsilon-strongly group graded rings and partial skew group(oid) rings

15:20-16:10 Peng Shan (Univ. Paris Sud (Paris-Orsay))
Categorification of quantum symmetric pairs

## Speakers:

14:30-15:20 Ehud Meir
Hopf algebras via geometric invariant theory

15:30-16:20 Christina Vasilakopoulou
measuring coalgebras

**2016**

## Speakers:

15:00-15:50 Jonas Wahl (KU Leuven)
Free wreath product quantum groups and standard invariants of subfactors

16:00-16:50 Paolo Saracco (University of Turin)
A reconstruction theorem for coquasi-bialgebras with preantipode

## Speakers:

15:05-15:55: Stefan Waldmann (University of Würzburg)
A universal construction of universal deformation formulas and Drinfel'd twists

16:05-16:55: Ivo Dell'Ambrogio (Université de Lille)
Monadicity of restriction functors and spans of groupoids