VII Portuguese Category Seminar


June 1, 2010



 
10.30 - 11.00 Pseudomonoids and Hopf algebras
Ignacio Lopez Franco (CMUC, Portugal)


11.00 - 11.15

Coffee Break


11.15 - 11.45 Co-completeness and exponentiation in V-categories
Carla Reis (Escola Superior de Tecnologia e Gestão, IP Coimbra, Portugal)

11.45 - 12.15 Some incoherent thoughts about coherent spaces
Dirk Hofmann (Univ. Aveiro, Portugal)

12.15 - 13.00 Internal actions via cross-effects of functors: general theory and conjugation action on proper subobjects
Bruno Loiseau (Université de Lille - Nord de France, Valenciennes, France)


13.00 - 14.15

Lunch

14.15 - 15.00 Actions and commutators via cross effects of functors: modules, crossed modules and a new notion of commutator
Manfred Hartl (Université de Valenciennes, France)

15.00 - 15.30 On categories with semidirect products
Nelson Martins-Ferreira (IP Leiria, Portugal)

15.30 - 16.00 Actions, modules and the "Smith is Huq" problem
Tim Van der Linden (CMUC, Portugal)

16.00 - 16.30 Universal central extensions relative to a Birkhoff subcategory: the case of Leibniz algebras
José Manuel Casas (Universidad de Vigo, Pontevedra, Spain)


16.30 - 17.00

Coffee Break


17.00 - 17.30 A Schreier-Mac Lane extension theorem in action accessible categories
Andrea Montoli (Università degli Studi di Milano, Italy)

17.30 - 18.00 Goursat completions
Diana Rodelo (Univ. Algarve and CMUC, Portugal)

18.00 - 18.30 On the categorical van Kampen Theorem
Maria Manuel Clementino (Univ. Coimbra and CMUC, Portugal)



Room 2.3, Mathematics Department, University of Coimbra

Support: CMUC - Centro de Matemática da Universidade de Coimbra / FCT
              DMUC - Departamento de Matemática da Universidade de Coimbra