摘要
本文给出了α－连对角占优矩阵为广义严格对角占优矩阵的等价条件，改进了Ｏｓｔｒｏｗｓｋｉ定理．
Some equivalent conditions for an α-connectivity diagonally dominant matrin to be a generalized strictly diagonally dominant matrix are given, a theorem by Ostrowski is improved.
关键词
α-连对角占优矩阵
广义严格对角占优矩阵
等价条件
α-connectivily diagonally dominant matix
Generalized strictly diagonally dominant matrix
Equivalent condition
