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CNRS post-doctoral fellow: 09/2007 - 08/2009
(I am visiting Universität Paderborn, Germany, till the end of 2009, and then will move to Universitat Autónoma de Barcelona, Spain.)
Past employment 09/2006 - 08/2007, EPSRC Research Fellow, University of Aberdeen, UK.
Contact
LAST NAME<at>math.univ-nantes.fr
Tel +33 (0) 2 51 12 59 25
Fax +33 (0) 2 51 12 59 47
http://www.math.sciences.univ-nantes.fr/~xu
Mailing address
Laboratoire
de mathématiques Jean Leray
Université de Nantes
2 rue de la Houssinière
BP 92208
44322 Nantes Cedex 03
France
Research insterests: representations and cohomology of small categories (especially finite groups and related categories); representations of finite-dimensional algebras; homological algebra; homotopy theory of classifying spaces; functor homology theory
1. Representations of categories and their applications, Journal of Algebra 317 (2007), 153-183 link to online publication.
2. On the cohomology rings of small categories , Journal of Pure and Applied Algebra 212 (2008), 2555-2569 link to online publication.
3. Hochschild and ordinary cohomology rings of small categories , Advances in Mathematics 219 (2008), 1872-1893 link to online publication.
4. Tensor structure on functor categories , in preparation.
Research activities, conferences and workshops (my whereabouts :-)
[Seminar co-organizer] Aberdeen Topology Seminar, Spring 2007.
[Workshop co-organizer] Extensions of nilpotent blocks, University of Aberdeen, Spring 2007.
[Seminar Talk] Séminaire de topologie et de géométrie algébrique, Université de Nantes, July 12, 2007.
[LMS Short Course] University of Birmingham, Fusion Systems, July 29-August 4, 2007.
[Topology GDR 2007] Université d'Angers, October 29-31, 2007.
[Seminar Talk] Topology Seminar, Université Paris 13, December 14, 2007.
[Seminar Talk] Algebra and Topology Seminar, Université Strasbourg I, January 8, 2008.
[CRM workshop] Universitat Autónoma de Barcelona, Algebra and Geometry of Groups and Classifying Spaces, February 17-22, 2008.
[Seminar Talk] Séminaire de topologie et de géométrie algébrique, Université de Nantes, October 23, 2008.
[Topology GDR 2008] Université Paris 13, October 29-31, 2008.
[Seminar Talk] Université de Lille I, November 28, 2008.
[Conference] Homologie des algèbres, CIRM Luminy, December 1-5, 2008.
[Seminar Talk] X.-H. Cao Algebra Colloquium, East China Normal University, December 16, 2008.
[Conference] First joint AMS-SMS meeting (special session: Representation of groups and algebras), Fudan University, Shanghai, December 17-21, 2008.
[Seminar Talk] Group Theory Seminar, Université de Picardie, Amiens, February 4, 2009.
[Mini-workshop] Mathematisches Forschungsinstitut Oberwolfach, Support Varieties, February 15-21, 2009.
[Workshop] Representations and cohomology, Universität zu Köln, March 1-6, 2009.
[Conference] Mathematisches Forschungsinstitut Oberwolfach, Representations of Finite Groups, March 22-28, 2009.
[Seminar Talk] Algebra Seminar, Université Montpellier 2, April 23, 2009.
[Conference] Algebraic topology, group theory and representation theory, Isle of Skye, Scotland, June 9-15, 2009.(my first slides talk)
[Research Visit and Seminar Talk] Universität Paderborn, Germany, June 22-26, 2009.
[Invited Talk] BLOC/REPNET (Bristol-Leicester-Oxford Colloquium & Representation Theory across the Channel Network) Joint Meeting, University of Leicester, July 1-2, 2009.
[Invited Talk] Hochschild Cohomology, Structure and Applications, CIRM Luminy, June 7-11, 2010.
[Conference] Mathematisches Forschungsinstitut Oberwolfach, Cohomology of Finite Groups: Interactions and Applications, July 25-31, 2010.
Last modification : 11/08/2009