Automorphisms of incidence algebras

被引:10
|
作者
Drozd, Yuriy [1 ]
Kolesnik, Petro [1 ]
机构
[1] Kyiv Taras Shevchenko Univ, Dept Mech & Math, UA-01033 Kiev, Ukraine
关键词
automorphism; cohomology; incidence algebra; partially orderd set; simplicial complex;
D O I
10.1080/00927870701511756
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We study automorphisms of the incidence algebra of a finite quasiordered set M. In particular, we describe explicitly the group of outer automorphisms and give a criterion for any automorphism of this algebra to be a product of an inner one and an automorphism of M, which corrects some results of Spiegel (2001).
引用
收藏
页码:3851 / 3854
页数:4
相关论文
共 50 条