Linckelmann, M. (2013). A version of alperin's weight conjecture for finite category algebras. Journal of Algebra, 398, pp. 386395. doi: 10.1016/j.jalgebra.2013.02.010
Abstract
Let p be a prime and k an algebraically closed field of characteristic p. We construct a functor C→OC on the category of finite categories with the property that if G=C is a finite group, then OC is the orbit category of psubgroups of G. This leads to an extension of Alperin's weight conjecture to any finite category C, stating that the number of isomorphism classes of simple kCmodules should be equal to that of the weight algebra W(kOC) of OC. We show that the versions of Alperin's weight conjecture for finite groups and for finite categories are in fact equivalent. © 2013 Elsevier Inc.
Publication Type:  Article 

Publisher Keywords:  Category algebra; Weight conjecture 
Subjects:  Q Science > QA Mathematics 
Departments:  School of Mathematics, Computer Science & Engineering > Mathematics 
URI:  http://openaccess.city.ac.uk/id/eprint/7346 

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