LYAPUNOV MATRIX EQUATION SA + A-STAR-S=S-STAR-B-STAR-BS

被引:14
作者
CARLSON, DH [1 ]
DATTA, BN [1 ]
机构
[1] UNIV ESTADUAL CAMPINAS,INST MATEMATICA ESTATIST & CIENCIAS COMP,CAMPINAS 13100,SP,BRAZIL
关键词
D O I
10.1016/0024-3795(79)90117-4
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
The matrix equation SA+A*S=S*B*BS is studied, under the assumption that (A, B*) is controllable, but allowing nonhermitian S. An inequality is given relating the dimensions of the eigenspaces of A and of the null space of S. In particular, if B has rank 1 and S is nonsingular, then S is hermitian, and the inertias of A and S are equal. Other inertial results are obtained, the role of the controllability of (A*, B*S*) is studied, and a class of D-stable matrices is determined. © 1979.
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页码:43 / 52
页数:10
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