2025 
 April 29: 
     Feza Gursey Center for Physics and Mathematics 
 Higher Structures Research Group Seminar (Istanbul); 
online talk:  On the ring theory of differential graded algebras 
September 1 to 5: 
Joint  
meeting  of the DMV-OeMG (Deutsche Mathematiker Vereinigung-Österreichische Mathematische Gesellschaft) 
in Linz, Austria. 
September 9 to 19: 
    CIMPA  Research school 
    ''Perspectives in non-commutative algebras: Leavitt path algebras, Hochschild (co)homology, K-theory and related topics''. 
  Anhui university; Hefei, China 
6 lectures on: Hochschild cohomology and Külshammer structures 
September 19 to 20: 
 
Miniworkshop  USTC, University of Science and Technology in China, Hefei.  talk: 
 DG-division algebras 
 2026 
 february 22 to 27: 
Oberwolfach/Germany 
workshop "Cohomology of finite groups" .