Conference talks and lecture series

July 2019:
"Group C*algebras: classical and modern"
series of five lectures during the summer school "Analysis, Geometry and PDE" at the Sophus Lie Center, Nordfjordeid, Norway. 
June 2019:
"Cartan subalgebras in dimension drop algebras"
during the International Conference "Operator Algebras, Groups and Applications to Quantum Information". 
February 2019:
"C*superrigidity"
two lectures during at the Fields Insitute, Toronto, Canada during the Southern Ontario Operator Algebras Seminar 2019. 
January 2019:
"C*superrigidity"
series of four lectures at IMP, Tehran, Iran at the occasion of the workshop "Quantum groups". 
May 2018:
"C*superrigidity of 2step nilpotent groups"
at the University of Münster, Germany, at the occasion of the conference NCGOA 2018. 
March 2018:
"L^{2}Betti numbers of universal quantum groups"
at the Université de Caen, France, during the Journées de catégories tensorielles et analyse. 
February 2018:
"C*superrigidity"
at the American Institute of Mathematics, San José, CA, USA, during the Workshop "Classification of group von Neumann algebras". 
October 2017:
"Groups acting on trees: representation theory and operator algebras"
in Sendai, Japan, during the Workshop "Ergodic and Geometric Group theory in Sendai". 
October 2017:
"C*superrigidity of virtually Abelian groups"
at IMPAN, Poland, during the Workshop "Operator Algebras, Geometry, and Actions". 
July 2017:
"C*superrigidity of virtually Abelian groups"
at Institut Henri Poincaré, France, during the Workshop "Von Neumann algebras and measured group theory". 
October 2016:
"Operator algebras of locally compact groups acting on trees"
at Université de Bordeaux, France, during the Workshop "Groupes et algèbres de von Neumann". 
August 2016:
"Nonamenable von Neumann algebras of groups acting on trees"
in MFO, Germany, during the Workshop "C*algebras". 
July 2016:
"Operator algebras of locally compact groups acting on trees"
at HIM, Bonn, Germany, during the workshop "Von Neumann algebras". 
June 2016:
"Operator algebras of locally compact groups acting on trees"
at Université de Paris 6, France, during the conference "Polish groups and geometry". 
April 2016:
"Operator algebras of locally compact groups acting on trees"
at the MittagLeffler Institute, Sweden, during the workshop "Classification and dynamical systems II: Von Neumann Algebras". 
January 2016:
"Locally compact C*simple groups"
lecture series at IPM, Tehran, Iran at the occasion of the workshop "C*dynamics". 
July 2015:
"The classification of orthogonal easy quantum groups"
in Herstmonceux, UK at the occasion of the Fields institute conference on quantum groups and quantum information theory. 
June 2015:
"Locally compact C*simple groups"
in MFO, Germany, during the Workshop "Noncommutative geometry". 
June 2015:
"Powers group methods for locally compact groups acting on trees"
in Copenhagen, Denmark at the occasion of the workshop "Representation theory of groups, quantum groups, and operator algebras". 
May 2015:
"Powers group methods for locally compact groups acting on trees"
in Neuchâtel, Switzerland at the Group Theory Day. 
May 2015:
"Powers group methods for locally compact groups acting on trees"
in Nashville, USA, at the occasion of the conference NCGOA 2015. 
April 2015:
"Powers group methods for locally compact groups acting on trees"
in Münster, Germany, at the occasion of the workshop "C*algebras: Structure and Classification". 
September 2014:
"BaumslagSolitar groups, relative profinite completions and measure equivalence rigidity"
in Kyoto, Japan, at the occasion of the workshop on recent developments in operator algebras. 
July 2014:
"The classification of easy quantum groups"
in Amsterdam, the Netherlands, at the occasion of the international workshop on operator theory and its applications. 
May 2014:
"Structure theory for von Neumann algebras: solidity"
at the University of FrancheComté in Besançon, France, during the journées d'analyse fonctionelle BesonçonNeuchâtel. 
March 2014:
"Character rigidity for lattices and commensurators (after CreutzPeterson)"
in MFO, Germany, during the Arbeitsgemeinschaft "Superrigidity". 
December 2013:
"BaumslagSolitar groups, relative profinite completions, and measure equivalence rigidity"
in Caen, France, at the occasion of the Arbre de Noël. 
January 2013:
"A duality between easy quantum groups and reflection groups"
in Tokyo, Japan, at the occasion of a workshop on operator algebras. 
September 2012:
"Sur la classification des produits croisÃ©s de Bogoliubov libre"
in Lyon, France, at the occasion of the meeting of the ANR project NEUMANN. 
May 2011:
"All finite C*tensor categories are bimodule categories of a II_{1} factor"
in Paris, France, at the occasion of the FrancoItalien meeting of GDRE GREFIGENCO. 
September 2010:
"Is every finite C*tensor category the bimodule category of a II_{1} factor?"
in Caen, France, at the occasion of the focused semester on quantum groups of the EU Noncommutative Geometry Network. 
September 2010:
"Every finite C*tensor category is the bimodule category of a II_{1} factor"
in Brussels, Belgium, at the occasion of the PhD day of the Belgium Mathematical Society. 
February 2010:
"Fusion rules of free orthogonal quantum groups"
in Cardiff, UK, at the occasion of the period on planar algebras and physics. 
January 2010:
"Fusion rules of free orthogonal quantum groups"
in Copenhagen, Denmark, at the occasion of the masterclass on von Neumann algebras and group actions.
2019
2018
2017
2016
2015
2014
2013 and before
Colloquium and seminar talks

April 2019:
"C*superrigidity of 2step nilpotent groups"
at the University of Glasgow, UK, in the analysis seminar. 
March 2019:
"C*superrigidity of 2step nilpotent groups"
at the University of Oslo, Norway, in the operator algebra seminar. 
January 2019:
"C*simpllicity"
at IHP, Paris, France, in the Séminaire Bourbaki. 
December 2018:
"Superrigidity for group operator algebas"
at the University of Waterloo, Canada, in the Pure Math Colloquium. 
August 2018:
"C*superrigidity of 2step nilpotent groups"
at Chalmers, Gothenburg, Sweden, in the Analysis and Probability seminar. 
May 2018:
"C*superrigidity of nilpotent groups"
at EPFL, Switzerland, in the topology seminar. 
February 2018:
"C*superrigidity"
at RIMS, Kyoto University, Japan. 
February 2018:
"Cartan subalgebras in dimension drop algebras"
at Nagoya University, Japan, in the research seminar of the analysis group. 
November 2017:
"Cartan subalgebras in dimension drop algebras"
at Copenhagen University, Denmark, in the research seminar of the operator algebra work group. 
November 2017:
"Groups acting on trees: representation theory and operator algebras"
at the University of Southern Denmark, Odense, Denmark, in the research seminar of the operator algebra work group. 
August 2017:
"C*superrigidity of virtually abelian groups"
at Chiba University, Japan, in the analysis seminar. 
June 2017:
"Groups acting on trees: representation theory and operator algebras"
at the Isaac Newton Institute, Cambridge, UK, in the operator algebras seminar. 
May 2017:
"C*superridigity of virtually abelian groups"
at Université de Neuchâel, Switzerland, in the groups and analysis seminar. 
December 2016:
"On the type I conjecture for groups acting on trees"
at EPFL, Switzerland, in the EGG seminar. 
November 2016:
"On the type I conjecture for groups acting on trees"
at ETH Zürich, Switzerland, in the geometry seminar. 
April 2016:
"Algèbres d'opérateurs de groupes agissants sur les arbres"
at Université Catholique de Louvain, Belgium, in the group theory seminar. 
April 2016:
"C*simplicity: from discrete to locally compact groups"
at Hokkaido University, Japan, in the analysis research seminar. 
March 2016:
"C*simple and nonC*simple locally compact groups"
at University ParisSud, France, in the research seminar GAN. 
March 2016:
"C*simple and nonC*simple locally compact groups"
at Copenhagen University, Denmark, in the research seminar of the operator algebra work group. 
March 2016:
"C*simple and nonC*simple locally compact groups"
at EPFL, Switzerland, in the research seminar for ergodic and geometric group theory. 
November 2015:
"Locally compact C*simple groups"
at the University of Münster, Germany, in the research seminar of the noncommutative geometry workgroup. 
October 2015:
"Locally compact C*simple groups"
at the University of Glasgow, Scotland, in the analysis seminar. 
July 2015:
"Generalised symmetries of quantum spaces"
at Keio University in Yokohama, Japan, in the monthly colloquium of the math department. 
July 2015:
"C*simplicity of locally compact Powers groups"
at Ochanomizu University in Tokyo, Japan, in the operator algebras seminar. 
January 2015:
"Free probability aspects of easy quantum groups"
at Kyushu University in Fukuoka, Japan, in the operator algebras seminar. 
January 2015:
"Character rigidity for lattices in higher rank Lie groups (after CreutzPeterson and Peterson)"
at RIMS in Kyoto, Japan, in the Kansai operator algebras seminar. 
October 2014:
"The classification of easy quantum groups"
at Tokyo University, Japan, in the operator algebras seminar. 
November 2013:
"The classification of orthogonal partition quantum groups (easy quantum groups)"
at the University of FrancheComté in Besançon, France, in the functional analysis seminar. 
May 2013:
"Group von Neumann algebras of locally compact HNNextensions"
at the University of Oxford, UK, in the junior geometric group theory seminar. 
December 2012:
"What is ... superrigidity?"
at KU Leuven, Belgium, in the PhDColloquium. 
November 2012:
"On the classification of free Bogoliubov crossed products of the integers"
at Université catolique de Louvain, Belgium, in the group theory seminar. 
October 2012:
"Tensor C*categories arising as bimodule categories of a II_{1} factor"
at the University of Münster, Germany, in the research seminar of the noncommutative geometry workgroup. 
June 2012:
"Von Neumann algebras and their bimodule categories"
at Saarland University, Germany, in the functional analysis seminar. 
May 2012:
"Les C*catégories tensorielles, qui sont les catégories de bimodules d'un facteur II_{1}"
at Institut de Mathématiques de Jussieu, Paris, France, in the operator algebras seminar. 
April 2012:
"Tensor C*categories arising as bimodule categories of II_{1} factors"
at KU Leuven, Belgium, in the operator algebras seminar. 
June 2009:
"On the corepresentation theory of complexified quantum groups"
at KU Leuven, Belgium, in the operator algebras seminar.