Conferences
2025
- Conference on Free Probability on the occasion of Roland Speicher's 65th birthday
Saarland University, Saarbrücken, Germany
June 9-13, 2025
Organized by Michael Brannan, James Mingo, Jonathan Novak, Dan-Virgil Voiculescu, Moritz Weber - Workshop on Quantum Graphs
Saarland University, Saarbrücken, Germany
February 17-21, 2025
Organized by Daniel Gromada and Luca Junk
2021
- Noncommutative algebra, probability and analysis in action
Alfried Krupp Kolleg, Greifswald, Germany
Sept 20-25, 2021
Talk: Hochschild cohomology for easy quantum groups - Fifth annual conference of the SFB-TRR 195
RWTH Aachen, Germany
Sept 13-16, 2021
Talk: Quantum isomorphisms of graphs - Forschungstage Informatik 2021
Saarland University, Saarbrücken
June 22, 2021
Talk/Group phase: Zählprobleme in der Kombinatorik - Quantum Groups Seminar
online seminar
June 21, 2021
Talk: Orthogonal vs. Unitary in the case of "easy" quantum groups
Slides - Mathematics Colloquium Series
NYU, Abu Dhabi
May 10, 2021
Talk: Quantum permutations
Slides - North Atlantic Noncommutative Geometry Seminar
Jan 20, 2021
Talk: Quantum symmetries of graphs
Slides, Recording
2020
- GAG seminar (Groups, Analysis, Geometry)
William & Mary, USA
Oct 28, 2020
Talk: Quantum automorphism groups of finite graphs: a survey
Slides, PhD thesis Simon Schmidt - Topological quantum groups, C*-tensor categories, and subfactors
Texas A & M, USA
*** cancelled ***
(was: July 27 - 31, 2020)
Minicourse lecturer: Introduction to easy quantum groups and their classification - Virtual Noncommutative Analysis Weekly Seminar
July 29, 2020
Talk (virtual): Compact matrix quantum groups and their representation theory
Slides - Seminar on Lie Theory
Cordoba, Argentina
June 29, 2020
Talk (virtual): Classification of compact matrix quantum groups
Slides - ISem23 - Evolutionary Equations, final workshop
(Online)
June 25, 2020
Talk (virtual): Dynamical systems and crossed products of C*-algebras
Slides - Free probability - on the occasion of Roland Speicher's 60th birthday
Saarbrücken, Germany
*** cancelled ***
(was: June 8 - 12, 2020)
Organizer, together with Michael Brannan, James Mingo, Jonathan Novak and Dan-Virgil Voiculescu - Entangling Non-commutative Functional Analysis and Geometry of Banach Spaces
Centre International de Rencontres Mathematiques, Luminy
*** cancelled ***
(was: May 11 - 15, 2020) - Deligne categories and quantum groups
Aachen, Germany
*** cancelled ***
(was: March 30 - April 3, 2020)
Organizer, together with Johannes Flake, Gerhard Hiss and Laura Maassen - Seminaire theorie de Lie, geometrie et analyse (LieGA)
Metz, France
January 23, 2020
Talk: An introduction to quantum groups and quantum symmetries
Earlier
2019
- Oberwolfach Miniworkshop 1941a Operator algebraic quantum groups
Oberwolfach, Germany
October 6 - 12, 2019
Organizer, together with Michael Brannan, Martijn Caspers and Anna Wysoczanska-Kula - DMV-Jahrestagung 2019, Mini-Symposium Computeralgebra
Karlsruhe, Germany
23-26 September, 2019
Talk: Representation categories of quantum groups and computational approaches - 3rd annual meeting SFB-TRR 195
Saarbrücken, Germany
September 9 - 13, 2019
Talk: Quantum symmetries and computations - Quantum groups and their analysis
UiO University of Oslo, Norway
Summer school: July 29 - August 2, 2019
Workshop: August 5 - 9, 2019
Organizer, together with Kurusch Ebrahimi-Fard and Makoto Yamashita - Oberseminar Mathematische Logik
University of Bonn, Germany
June 19, 2019
Talk: Forcing in operator algebras - A.RT-Seminar (Algebra & Representation Theory)
RWTH Aachen, Germany
June 17, 2019
Talk: How to describe representation categories of some linear groups and some quantum groups - Ergodic Theorems
Workshop of the 22nd Internetseminar (see also our local edition)
Bergische Universität Wuppertal, Germany
June 10 - 16, 2019
Participation as coordinator of project 13: Noncommutative ergodic theorems - Journées Thématiques : Cohomology of compact quantum groups and related topics
Besancon, France
March 21 - 22, 2019
Talk: Unitary half-liberations - New developments in free probability and applications
Centre de recherches mathematiques, Montreal, Canada
March 4 - 15, 2019
Talk: News from easy and non-easy quantum groups - Retreat SFB-TRR 195
Bad Münster am Stein, Germany
February 18 - 21, 2019 - Séminaire Matrices et graphes aléatoires (MEGA)
Institut Henri Poincaré, Paris
February 8, 2019
Talk: Quantum symmetries of finite graphs and of noncommutative notions of independence - Geometry Seminar
Dresden, Germany
January 15, 2019
Talk: Quantum symmetries of finite graphs
- Oberwolfach Workshop 1849 Free Probability Theory
Oberwolfach, Germany
December 3 - 7, 2018
Talk: Quantum groups by example - Cohomology of quantum groups and quantum automorphism groups of finite graphs
Saarbrücken, Germany
October 8 - 12, 2018
Organizer, together with Simon Schmidt - Second annual meeting of the DFG collaborative research center SFB-TRR 195
Tübingen, Germany
September 24 - 28, 2018 - Quantum homogeneous spaces
International Centre for Mathematical Sciences, Edinburgh, UK
June 11 - 15, 2018
Talk: Quantum spaces arising from partitions of sets - NCGOA 2018: C*-algebras and Dynamics
Münster, Germany
May 14 - 19, 2018
Talk: Quantum symmetries of graph C*-algebras (PDF) - Oberwolfach Workshop 1819 Interactions between operator space theory
and quantum probability with applications to quantum information
Oberwolfach, Germany
May 6 - 12, 2018
Talk: Quantum automorphism groups of graphs - 50th Anniversary meeting of the North British Functional Analysis Seminar
Edinburgh, UK
April 12 - 14, 2018
Talk: Quantum groups by example - Lancaster Analysis Days 2018
Lancaster, UK
April 10 - 11, 2018
Talk: C*-algebras and quantum spaces arising from partitions (PDF) - GDMV 2018 - Section Functional Analysis
Annual Meeting of the German Mathematical Society (DMV)
Paderborn, Germany
March 5 - 9, 2018
Talk: Quantum symmetry - basic idea and concrete examples - Workshop tensor categories, Hopf algebras and quantum groups
supported by the SFB-TRR 195
Marburg, Germany
January 22 - 26, 2018
Organizer, together with Istvan Heckenberger and Sonia Natale
- Introduction to computer algebra systems
Mini-workshop
Mini-workshop, part of the graduate programme of the SFB-TRR 195
Saarbrücken, Germany
November 28 - 30, 2017
Organizer - First annual meeting of the DFG collaborative research center SFB-TRR 195
RWTH Aachen, Germany
September 25 - 28, 2017
Talk: Some computational problems when working on compact quantum groups - Summer school on Mathematical aspects of quantum information
Institut des Etudes Scientiques de Cargese, Corsica
September 4 - 8, 2017
Lecture: Introduction to free probability
Slides: Lecture 1: Free Probability Lecture 2: Quantum Groups Lecture 3: Links - Part 1 2 3 4 - Joint Seminar on Algebra and Analysis
Hannover, Germany
July 6, 2017
Seminar talk: Quantum symmetry, C*-algebras and combinatorics - Operator algebras seminar
KU Leuven, Belgium
Feburary 10, 2017
Seminar talk: Quantum groups based on spatial partitions
- Analytic versus Combinatorial in Free Probability
BIRS workshop
Banff, Canada
December 4 - December 9, 2016
Talk: Quantum groups versus combinatorics in free probabilityVideo of the talk - Compact Quantum Groups
Satellite event of the 7th European Congress of Mathematics (July 18 - 22, 2016, Berlin, Germany)
Alfried Krupp Wissenschaftskolleg Greifswald, Germany
July 11 - 15, 2016
Organizer, together with Uwe Franz, Malte Gerhold and Adam Skalski - Quantum groups: geometry, representations, and beyond
Oslo, Norway
May 9 - 13, 2016
Talk: Quantum groups with partial commutation relations - Micro workshop on SU_q(3)
Saarbrücken
Jan 18 - 22, 2016
Organizer
- Analysis seminar
Wroclaw, Poland
October 15, 2015
Seminar talk: From Woronowicz's Tannaka-Krein result to examples of combinatorial quantum groups - Noncommutative Geometry seminar
IMPAN, Warsawa, Poland
October 12, 2015
Seminar talk: From Woronowicz's Tannaka-Krein result to examples of combinatorial quantum groups - Operator algebras seminar
KU Leuven, Belgium
October 2, 2015
Seminar talk: From combinatorics to (easy) quantum groups and more - George Boole Mathematical Sciences Conference
Theme 8: Quantum Probabilistic Symmetries & Quantized Boolean Algebras
Cork, Ireland
August 17 - 28, 2015
Talk: Unitary easy quantum groups - Quantum Groups and Quantum Information Theory
Workshop funded by the Fields Institute, the London Mathematical Society, the ERC Advanced
Grant held by Roland Speicher, and the ERC Starting grant held by Matthias Christandl
(see also page 15 and 16 in the Fields report)
Herstmonceux, UK
July 13 - 17, 2015
Organizer, together with Benoit Collins, James Mingo, Ashley Montanaro and Maria Grazia Viola - Oberwolfach Workshop 1524 Free Probability
Oberwolfach, Germany
June 7 - 13, 2015 - Analysis seminar
Aberdeen, UK
March 30, 2015
Seminar talk: Quantum groups meet free probability - Analysis and probability seminar
Lancaster, UK
March 25, 2015
Seminar talk: Quantum groups meet free probability - Mathematical physics seminar
Cardiff, UK
March 19, 2015
Seminar talk: Quantum groups meet free probability - Algebraic and Analytic Aspects of Quantum Levy Processes
(see also here)
Alfried Krupp Wissenschaftskolleg Greifswald, Germany
March 9 - 13, 2015
Talk: Easy quantum groups go unitary - how combinatorics provides an easy access to quantum groups - Analysis seminar
Glasgow, UK
March 4, 2015
Seminar talk: Quantum groups meet free probability - Lecture series on (easy) quantum groups
Lecturer for eight lectures on quantum groups
IMSc Chennai, India
January 5 - 24, 2015
Playlist of the lectures on YouTube
Lecture Notes of the Chennai lectures (published in 2017)
- Free Probability and Random Matrices
Bielefeld, Germany
September 22 - 25, 2014
Talk: Quantum Groups in Free Probability - IWOTA 2014
International Workshop on Operator Theory and its Applications
yearly conference, this time held in Amsterdam, Netherlands
July 14 - 18, 2014
Organizer of the Special Session on Free probability and operator theory,
together with Serban Belinschi and Roland Speicher - Quantum Symmetries in Free Probability
Mini-workshop on easy quantum groups and other symmetries in free probability
Saarbrücken, Germany
March 31 - April 4, 2014
Organizer, together with Roland Speicher
Talk: Partitions and quantum groups
- Masterclass on Free Probability and Operator Algebras
Münster, Germany
September 2 - 6, 2013
Organizer, together with Nicolai Stammeier
Lecture: Easy quantum groups - Focus Program on Noncommutative Distributions in Free Probability Theory
Focus program by the Fields Institute, Toronto, Canada
July 2013
Talk: Partitions and quantum groups
see also the video archive of the Fields Institute
Lecture (in the inter-workshop program): Quantum groups and their relation with free probability
see also the video archive of the Fields Institute - Operator algebras seminar
KU Leuven, Belgium
March 15, 2013
Seminar talk: Easy quantum groups - a combinatorial class of quantum groups - PLLUS Workshop
Meeting of the probability groups of four universities:
Technische Universität Kaiserslautern, University of Luxembourg,
Universite de Lorraine, Universität des Saarlandes
third edition held in Saarbrücken
Febr 21 - 22, 2013
Local organizer, together with Roland Speicher
- Arbre de Noel
Annual Christmas Conference of the Non-Commutative Geometry GDR
Universite de Lorraine, Metz, France
December 6 - 8, 2012
Talk: Easy quantum groups - a combinatorial class of quantum groups - Séminaire d'analyse fonctionelle
Besançon, France
27 November, 2012
Seminar talk: Easy quantum groups - a combinatorial class of quantum groups - Oberwolfach Workshop 1244
C*-Algebras, Dynamics, and Classification
Oberwolfach, Germany
October 28 - November 3, 2012
Talk: The classification of easy quantum groups is difficult - Minisymposium on Free Probability and Random Matrices
(part of the DMV Annual Meeting 2012)
Annual Meeting of the German Mathematical Society
Saarbrücken, Germany
September 17 - 20, 2012
Local organizer, together with Roland Speicher
Talk (Section Functional analysis): C*-algebras generated by isometries with twisted commutation relations - Canadian Operator Symposium 2012
Conference at Queen's University, Kingston, Canada
May 21 - 25, 2012
Talk: C*-algebras generated by isometries with twisted commutation relations - Masterclass on quantum groups
University of Copenhagen
March 5 - 9, 2012
Talk: On the classification of easy quantum groups - PLLUS Workshop
Meeting of the probability groups of four universities:
Technische Universität Kaiserslautern, University of Luxembourg,
University Nancy 1, Universität des Saarlandes
second edition held in Luxemburg
March 1 - 2, 2012
- Non-commutative harmonic analysis
14th Workshop at Bedlewo, Poland
Sept 25 - Oct 1, 2011
Talk: Easy quantum groups (joint with Roland Speicher) - PLLUS Workshop
Meeting of the probability groups of four universities:
Technische Universität Kaiserslautern, University of Luxembourg,
University Nancy 1, Universität des Saarlandes
first edition held in Kaiserslautern
Febr 10 - 11, 2011 - Bialgebras in Free Probability
Program at Erwin Schrödinger Institute, Vienna
Febr 1 - Apr 22, 2011
Oberwolfach Workshop 1010
C*-Algebras
Oberwolfach, Germany
March 7 - 13, 2010
Reporter (for the Oberwolfach Report 13/2010)
- Masterclass on the classification of C*-algebras
University of Copenhagen
November 16 - 27, 2009
Talk: Twists of isometries - Focused semester on KK-theory and its applications
Münster, Germany
May 4 - July 24, 2009
Talk: Twists of isometries
Postal address
Saarland University
Department of Mathematics
Postfach 15 11 50
66041 Saarbrücken
Germany
Physical address
Saarland University
Campus building E 2 4
66123 Saarbrücken
Germany