STABILITY OF CONVEX COMBINATIONS OF HURWITZ OR SCHUR STABLE MATRICES

Main Article Content

ZIAD ZAHREDDINE

Abstract




Given that two systems of differential equations- or equivalently two matrices are Hurwitz (Schur) stable. We determine whether a convex combination of the specified matrices is also Hurwitz (Schur) stable. The procedure used, provides a unified approach to the testing of both types of stability. The property of aperiodicity of a convex combination of two matrices is also considered.




Article Details

How to Cite
ZAHREDDINE, Z. (1997). STABILITY OF CONVEX COMBINATIONS OF HURWITZ OR SCHUR STABLE MATRICES. Tamkang Journal of Mathematics, 28(2), 135–143. https://doi.org/10.5556/j.tkjm.28.1997.4327
Section
Papers

References

T. Ando and K. Nishio, "Convexity properties of operator radii associated with unitary $rho$-dilations," Michigan Math. J. 20 (1973), 303-307.

E. Durszt, "On unitary $rho$-dilations of operators," Acta Sci. Math. 27 (1996), 247-250.

J. A. R. Holbrook,. "On the power-bounded operators of Sz.-Nagy and Foias", Acta Sci. Math. 29 (1968), 299-310.

R. A. Horn and C. R.. Johnson, "Topics in matrix analysis," Cambridge University Press, Cambridge, 1991.

C. R. Johnson and C. K. Li, "Inequalities relating unitarily invariant norms and the numerical radius," Linear and Multilinear Algebra 23 {1988), 183-191.

M. Goldberg, E. Tadmor and G. Zwas, "The numerical radius and spectral matrices," Linear and Multilinear Algebra 2 (1975), 317-326.

M. Goldberg and G. Zwas, "On matrices having equal spectral radius and spectral norm," Linear Algebra Appl. 8 (1974), 427-434.

R. Mathias and K. Okubo, "The induced norm of the Schur multiplication operator with respect to the operator radius," Linear and Multilinear Algebra 37 (1994), 111-124.

B. Sz. Nagy and C. Foias, "On certain classes of power-bounded operators in Hilbert space," Acta Sci. Math. 27 (1996), 17-25.

J. P. Williams and T. Crimmins, "On the numerical radius of a linear operator," Amer. Math. Monthly 74 (1967), 832-833.