2015 
September 1-September 4, 2015,
 Lausanne/Switzerland
Functorial Methods in Representation Theory  Meeting  to honor Serge Bouc's 60th birthday 
talk
 degeneration in tringulated categories. 
see
 here  for the beamer presentation 
8 October-16 October, 2015,
 Murcia/Spain
collaboration with Manolo Saorin 
  
19 October-20 October, 2015,
 Bielefeld/Allemagne
  Ehrenpromotion Idun Reiten and Robert V. Moody
  
 2016 
January 29, 2016
 Université Blaise Pascal Clermont-Ferrand
séminaire équipe ''géométrie, algèbre, algèbres d'opérateurs'':
talk
 dégénérescence dans des catégories triangulées. 
14 February-20 February, 2016,
 Oberwolfach/Germany
Hochschild Cohomology in Algebra, Geometry, and Topology
:
talk
 degeneration in triangulated categories.  
  
21 March-24 March, 2016,
 Stuttgart/Germany
workshop ''Brauer graph algebras''
  
talk
  Batalin-Vilkovisky structure on the Hochschild cohomology of Frobenius algebras. 
8 October-22 October, 2016,
 Bandung and  Yogyakarta/Indonesia 
visit Intan Muchtadi-Alamsyah and Indah Wijayanti
  
October 10: Lecture 1 Bandung ''Equivalence between categories: Morita and stable equivalences''
October 13: Lecture 2 Bandung ''Tensor product of algebras and stable equivalence of Morita type''
October 14: Bandung algebra workshop ''Verdier quotients of homotopy categories''
October 17: Yogyakarta UGM: Lecture 1: Introduction to representation theory 1; equivalences of categories of representations
October 18: Yogyakarta UGM: Lecture 2: Introduction to representation theory 2; Tensor product of algebras and stable equivalences of Morita type, the non symmetric case
October 19: Yogyakarta UGM: Lecture 3: Introduction to representation theory 3; Tensor product of algebras and stable equivalences of Morita type, th symmetric case; Verdier quotients of homotopy categories
 
October 20: Yogyakarta UGM: Algebra Colloquium: ''On equivalences between categories of representations''
9 December-10 December, 2016,
 Aachen/Germany
Nikolaus conference 2016
 2017 
October 23-November 4, 2017,
 Shanghai/China
East China Normal University, visit Guodong Zhou