2014/10/22 by Rosali Brusamarello, Érica Z. Fornaroli, Ednei A. Santulo
Mathematics · #Advanced Topics in Algebra #Rings, Modules, and Algebras #Finite Group Theory Research
paper · doi:10.1080/00927872.2013.847951
Abstract We present necessary and sufficient conditions for a multiplicative automorphism of an incidence algebra of a finite partially ordered set X to be an inner automorphism. These conditions are related to the structure of X as a directed graph. Key Words: AutomorphismsDirected graphsIncidence algebras2010 Mathematics Subject Classification: 16W2005B2005C20 Notes Communicated by I. Shestakov.