%0 Journal Article
%T A multiplication formula for module subcategories of Ext-symmetry
%A Jie Xiao
%A Fan Xu
%J Mathematics
%D 2008
%I arXiv
%X We define evaluation forms associated to objects in a module subcategory of Ext-symmetry generated by finitely many simple modules over a path algebra with relations and prove a multiplication formula for the product of two evaluation forms. It is analogous to a multiplication formula for the product of two evaluation forms associated to modules over a preprojective algebra given by Geiss, Leclerc and Schr\"oer in \cite{GLS2006}.
%U http://arxiv.org/abs/0804.2014v2