##################################################### # # # INTERNAL ACTIONS and INTERNAL STRUCTURES # # # # WORKSHOP in CATEGORICAL ALGEBRA # # # # 26th-27th-28th october 2006, Milano, Italy # # # ##################################################### The purpose of the workshop is to consider the notion of internal action in different categorical contexts and to relate it with internal structures defined thereby. In particular, the well established context of semiabelian categories provides a natural setting for studying the interplay between categorical and algebraic aspects of actions, with respect to internal structures that may be defined. Nevertheless, more general settings are worth to be considered ( lex pointed categories with sums, protomodular categories...) Keywords of the meeting are: the representability of actions, sufficient conditions for their existence, universal actions, categorical semi-direct product and constructions, internal groupoids and internal crossed modules, internal commutator theory, cohomological implications. The workshop is intended to reflect its etymology, in order to give the participants a fruitful opportunity of debate and exchange experiences about the subject. That is the reason why after every lecture there will be time for informal discussions. The backbone of the meeting are the lectures of the invited speakers: Dominique Bourn (Université du Littoral), Marino Gran (Université du Littoral) and Enrico Vitale (Université Catholique LLN). Lectures are scheduled on Thursday 26th and Friday 27th (morning and afternoon), and on Saturday 28th (only morning). Attendance is open to everyone and other contributions on related topics will be considered with pleasure. The workshop will take place at the Math Department of Università degli Studi, Milan, Italy. Detailed program, logistic and further information will follow. ---------------------------------------------------------------------- Organizing committee: Stefano Kasangian, Sandra Mantovani, Giuseppe Metere. For info, please contact the organizing committee to milanworkshop.06@gmail.com webpage: http://users.mat.unimi.it/users/mantovani/workshopMi06.htm ----------------------------------------------------------------