Babes-Bolyai University, Cluj-Napoca
Abstract: In  Pu Zhang presents a PBW-basis of the composition subalgebra of the Hall algebra in the Kronecker case. The construction is based on formulas expressing the product of some specific elements in the Hall algebra. Using a different approach we will reprove these formulas in an entirely independent manner.
Keywords: Kronecker algebra, Hall algebra, composition algebra.
Classification (MSC2000): 16G20; 17B37
Full text of the article: