|
ABSTRACT
In this paper we discuss the use of structured matrix methods for the numerical approximation of the zeros of a univariate polynomial. In particular, it is shown that root-finding algorithms based on floating-point eigenvalue computation can benefit from the structure of the matrix problem to reduce their complexity and memory requirements by an order of magnitude.
REFERENCES
Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.
| |
1
|
D. A. Bini, F. Daddi, and L. Gemignani. On the shifted QR iteration applied to companion matrices. Electron. Trans. Numer. Anal., 18:137--152 (electronic), 2004.
|
| |
2
|
|
| |
3
|
D. A. Bini, Y. Eidelman, L. Gemignani, and I. Gohberg. The unitary completion and QR iterations for a class of structured matrices. In press in Mathematics of Computation.
|
| |
4
|
D. A. Bini and G. Fiorentino. Design, analysis, and implementation of a multiprecision polynomial rootfinder. Numer. Algorithms, 23(2-3):127--173, 2000.
|
| |
5
|
D. A. Bini, L. Gemignani, and V. Y. Pan. Improved initialization of the accelerated and robust QR-like polynomial root-finding. Electron. Trans. Numer. Anal., 17:195--205 (electronic), 2004.
|
| |
6
|
|
| |
7
|
C. Carstensen. Linear construction of companion matrices. Linear Algebra and Appl., 149:191--214, 1991.
|
| |
8
|
S. Chandrasekaran, M. Gu, J. Xia, and J. Zhu. A fast QR algorithm for companion matrices. 2006.
|
| |
9
|
J. Della-Dora. Numerical linear algorithms and group theory. Linear Algebra and Appl., 10:267--283, 1975.
|
| |
10
|
S. Delvaux and M. Van Barel. Unitary rank structured matrices. Technical Report TW464, Department of Computer Science, Katholieke Universiteit Leuven, Celestijnenlaan 200A, 3000 Leuven (Heverlee), Belgium, July 2006.
|
| |
11
|
P. Dewilde and A. J. van der Veen. Time-varying systems and computations. Kluwer Academic Publishers, Boston, MA, 1998.
|
| |
12
|
Y. Eidelman, L. Gemignani, and I. Gohberg. On the fast reduction of a quasiseparable matrix to Hessenberg and tridiagonal forms. Linear Algebra Appl., 420, 2007.
|
| |
13
|
Y. Eidelman and I. Gohberg. On a new class of structured matrices. Integral Equations Operator Theory, 34:293--324, 1999.
|
| |
14
|
Y. Eidelman and I. Gohberg. Fast inversion algorithms for a class of structured operator matrices. Linear Algebra Appl., 371:153--190, 2003.
|
| |
15
|
Y. Eidelman, I. Gohberg, and V. Olshevsky. The QR iteration method for Hermitian quasiseparable matrices of an arbitrary order. Linear Algebra Appl., 404:305--324, 2005.
|
| |
16
|
L. Elsner. On some algebraic problems in connection with general eigenvalue algorithms. Linear Algebra Appl., 26:123--138, 1979.
|
| |
17
|
D. Fasino. Rational Krylov matrices and QR steps on Hermitian diagonal-plus-semiseparable matrices. Numer. Linear Algebra Appl., 12(8):743--754, 2005.
|
 |
18
|
|
| |
19
|
|
| |
20
|
L. Gemignani. Quasiseparable structures of companion pencils under the QZ-algorithm. Calcolo, 42(3-4):215--226, 2005.
|
| |
21
|
G. I. Hargreaves. Topics in matrix computations: stability and efficiency of algorithms. PhD thesis, School of Mathematics, University of Manchester, 2005.
|
 |
22
|
|
| |
23
|
F. Uhlig. The DQR algorithm, basic theory, convergence, and conditional stability. Numer. Math., 76(4):515--553, 1997.
|
| |
24
|
R. Vandebril, M. Van Barel, and N. Mastronardi. An implicit QR algorithm for symmetric semiseparable matrices. Numer. Linear Algebra Appl., 12(7):625--658, 2005.
|
CITED BY
|
|
V. Y. Pan , B. Murphy , R. E. Rosholt , Y. Tang , X. Wang , A. Zheng, Eigen-solving via reduction to DPR1 matrices, Computers & Mathematics with Applications, v.56 n.1, p.166-171, July, 2008
|
|