2021 
  March 4-6, 2021; 
  
    Vellore Institute of Technology, Velore, Tamil Nadu, India
6th Biennal International Group Theory Conference
6BIGTC 2021 online conference.
 
Lecture: 
  Categorical Green
  correspondence emanating from modular representation theory
Link to the  6th BIGTC 
  May 31, 2021:
 Thesis defense  of Nikken Prima Puspita, Universitas Gadjah Mada, Yogyakarta; Indonesia.
Member of the jury, online. 
 
June 14 to June 18, 2021; 
   Mittag Leffler Institute, Djursholm, Sweden
Hochschild (co)homology in algebra, geometry and topology; online participant
 internet site 
(postponed due to the pandemic)
 2022 
June 15-17 , 2022; 
  
    Amiens                                                    
Functorial Methods in Group Theory; conference in honor of Serge Bouc         .
 
Lecture: Clifford theorem for orbit categories
August 24 to August 26; 
  Ambleside, University of Cumbria, UK
  Structure of Group Algebras over Local Rings
Lecture: Clifford theorem for orbit categories
 September 5 to September 6;
   Paris, Institut Henri Poincaré
  Algebra days in Paris in honor of Bernhard Keller, Paris IHP.
  
21 Octobre 2022; 
 université de Lille
 séminaire itinérant de catégories (SIC !)
Exposé:  Théorème de Clifford pour catégories d'orbites