This paper obtains a necessary and sufficient condition for an irreducible complex matrix whose comparison matrix is a singular M-matrix to be singular. This is used to establish a necessary and sufficient condition f...This paper obtains a necessary and sufficient condition for an irreducible complex matrix whose comparison matrix is a singular M-matrix to be singular. This is used to establish a necessary and sufficient condition for a boundary point of Brualdi’s inclusion region of the eigenvalues of an irreducible complex matrix to be an eigenvalue.展开更多
In this paper, the concept of a-connective diagonal dominant matrix according to circuit is introduced, and new conditions for H-matrices are obtained, corresponding results of [1]-[9] are improved and generalized.
文摘This paper obtains a necessary and sufficient condition for an irreducible complex matrix whose comparison matrix is a singular M-matrix to be singular. This is used to establish a necessary and sufficient condition for a boundary point of Brualdi’s inclusion region of the eigenvalues of an irreducible complex matrix to be an eigenvalue.
文摘In this paper, the concept of a-connective diagonal dominant matrix according to circuit is introduced, and new conditions for H-matrices are obtained, corresponding results of [1]-[9] are improved and generalized.