数学物理学报(英文版) ›› 2005, Vol. 25 ›› Issue (1): 112-118.
陈神灿
CHEN Shen-Can
摘要:
This paper obtains a necessary and sufficient condition for an irreducible com-
plex 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.
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