projective and injective dimension;
endomorphism algebra;
triangular matrix algebra;
D O I:
10.2969/jmsj/1191593912
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
We investigate the endomorphism algebras Gamma of finite dimensional modules having the property that every indecomposable finite dimensional Gamma-module is of projective dimension at most one or injective dimension at most one. In particular, we describe all matrix algebras [GRAPHICS] with this homological property.
机构:
Huaihua Univ, Sch Math & Computat Sci, Huaihua 418000, Peoples R China
Huaihua Univ, Wulingshan K 12 Educ Res Ctr, Huaihua 418000, Peoples R ChinaHuaihua Univ, Sch Math & Computat Sci, Huaihua 418000, Peoples R China
机构:
Tokyo Univ Sci, Grad Sch Sci, Dept Math, 1-3 Kagurazaka,Shinjuku Ku, Tokyo 1628601, Japan
Tokyo Metropolitan Coll Ind Technol, Dept Gen Educ, 8-17-1 Minamisenju,Arakawa Ku, Tokyo 1168523, JapanTokyo Univ Sci, Grad Sch Sci, Dept Math, 1-3 Kagurazaka,Shinjuku Ku, Tokyo 1628601, Japan