Abstract
The Wilkinson distance of a matrix A is the two-norm of the smallest perturbation E so that A + E has a multiple eigenvalue. Malyshev derived a singular value optimization characterization for the Wilkinson distance. In this work we generalize the definition of the Wilkinson distance as the two-norm of the smallest perturbation so that the perturbed matrix has an eigenvalue of prespecified algebraic multiplicity. We provide a singular value characterization for this generalized Wilkinson distance. Then we outline a numerical technique to solve the derived singular value optimization problems. In particular the numerical technique is applicable to Malyshev’s formula to compute the Wilkinson distance as well as to retrieve a nearest matrix with a multiple eigenvalue.
Similar content being viewed by others
References
Alam R., Bora S.: On sensitivity of eigenvalues and eigendecompositions of matrices. Linear Algebra Appl. 396, 273–301 (2005)
Bunse-Gerstner A., Byers R., Mehrmann V., Nichols N.K.: Numerical computation of an analytic singular value decomposition of a matrix valued function. Numer. Math. 60, 1–39 (1991)
Byers, R.: Detecting nearly uncontrollable pairs. In: Kaashoek, M.A., van Schuppen, J.H., Ran, A.C.M. (eds.) Proceedings of the International Symposium MTNS-89, vol. III. North-Holland, Amsterdam (1990)
Demmel J.W.: Computing stable eigendecompositions of matrices. Linear Algebra Appl. 79, 163–193 (1986)
Gablonsky, J.M.: Modifications of the DIRECT algorithm. Ph.D. thesis. North Carolina State University, Raleigh, North Carolina (2001)
Golub G., Van Loan C.: Matrix Computations, 3rd edn. The John Hopkins University Press, Baltimore (1996)
Hinrichsen, D., Motscha, M.: Optimization problems in the robustness analysis of linear state space systems. In: Proceedings of the Seminar on Approximations and Optimization, Havana, LN Mathematics. Springer, Berlin (1987)
Horn R.A., Johnson C.R.: Matrix Analysis. Cambridge University Press, London (1985)
Jones D.R., Perttunen C.D., Stuckman B.E.: Lipschitzian optimization without the Lipschitz constant. J. Optim. Theory Appl. 79(1), 157–181 (1993)
Kato T.: Perturbation Theory for Linear Operators, 2nd edn. Springer, Berlin (1976)
Lancaster P., Tismenetsky M.: The Theory of Matrices, 2nd edn. Academic Press, London (1985)
Lehoucq, R., Sorensen, D., Yang, C.: ARPACK users’ guide: solution of large scale eigenvalue problems with implicitly restarted Arnoldi methods (1997)
Liu, D.C., Nocedal, J.: On the limited memory BFGS method for large scale optimization. Math. Program. 45(3, (Ser. B)), 503–528 (1989)
Van Loan C.F.: How near is a stable matrix to an unstable matrix. Contemp. Math. 47, 465–477 (1985)
Malyshev A.N.: A formula for the 2-norm distance from a matrix to the set of matrices with multiple eigenvalues. Numer. Math. 83, 443–454 (1999)
Paige C.C.: Properties of numerical algorithms related to computing controllability. IEEE Trans. Automat. Contr. 26(1), 130–138 (1981)
Piyavskii S.A.: An algorithm for finding the absolute extremum of a function. USSR Comput. Math. Math. Phys. 12, 57–67 (1972)
Qiu L., Bernhardsson B., Rantzer A., Davison E.J., Young P.M., Doyle J.C.: A formula for computation of the real stability radius. Automatica 31(6), 879–890 (1995)
Rellich F.: Storungstheorie der spektralzerlegung, I. Math. Ann. 113, 600–619 (1937)
Rellich F.: Storungstheorie der spektralzerlegung, II. Math. Ann. 113, 677–685 (1937)
Rellich F.: Storungstheorie der spektralzerlegung, III. Math. Ann. 116, 555–570 (1939)
Rellich F.: Storungstheorie der spektralzerlegung, IV. Math. Ann. 117, 356–382 (1940)
Rellich F.: Storungstheorie der spektralzerlegung, V. Math. Ann. 118, 462–484 (1942)
Ruhe A.: Properties of a matrix with a very ill-conditioned eigenproblem. Numer. Math. 15, 57–60 (1970)
Sergeyev Y.D., Kvasov D.E.: Global search based on efficient diagonal partitions and a set of lipschitz constants. SIAM J. Optim. 16(3), 910–937 (2006)
Shubert B.: A sequential method seeking the global maximum of a function. SIAM J. Numer. Anal. 9, 379–388 (1972)
Wilkinson J.H.: The Algebraic Eigenvalue Problem. Clarendon Press, Oxford (1965)
Wilkinson J.H.: Note on matrices with a very ill-conditioned eigenproblem. Numer. Math. 19, 176–178 (1972)
Wilkinson J.H.: On neighbouring matrices with quadratic elementary divisors. Numer. Math. 44, 1–21 (1984)
Author information
Authors and Affiliations
Corresponding author
Additional information
The computing resources for this work were supplied through the National Science Foundation Grants DMS-0715146 and DMS-0821816. This work was also supported in part by the TUBITAK (the scientific and technological research council of Turkey) Grant 109T660. Most of this work was completed when the author was holding a S.E.W. assistant professorship in the department of mathematics at the University of California, San Diego.
Rights and permissions
About this article
Cite this article
Mengi, E. Locating a nearest matrix with an eigenvalue of prespecified algebraic multiplicity. Numer. Math. 118, 109–135 (2011). https://doi.org/10.1007/s00211-010-0326-3
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00211-010-0326-3