A multiplication formula for module subcategories of Ext-symmetry

Details A multiplication formula for module subcategories of Ext-symmetry A multiplication formula for module subcategories of Ext-symmetry

2008-04-12

arxiv.org/abs/0804.2014v2

Mathematics

Representation Theory

12 pages

Scientific paper

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}.

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