MULTIPLICATIVE AUTOMORPHISMS OF INCIDENCE ALGEBRAS

作者：Brusamarello Rosali; Fornaroli Erica Z; Santulo Ednei A Jr^*

来源：Communications in Algebra, 2015, 43(2): 726-736.

DOI：10.1080/00927872.2013.847951

• Automorphisms
• Directed graphs
• Incidence algebras

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.

• 出版日期2015