A geometric approach to perturbation theory of matrices and matrix pencils. Part II: A stratification-enhanced staircase algorithm

Citation
A. Edelman et al., A geometric approach to perturbation theory of matrices and matrix pencils. Part II: A stratification-enhanced staircase algorithm, SIAM J MATR, 20(3), 1999, pp. 667-699
Citations number
45
Categorie Soggetti
Mathematics
Journal title
SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS
ISSN journal
08954798 → ACNP
Volume
20
Issue
3
Year of publication
1999
Pages
667 - 699
Database
ISI
SICI code
0895-4798(19990713)20:3<667:AGATPT>2.0.ZU;2-5
Abstract
Computing the Jordan form of a matrix or the Kronecker structure of a penci l is a well-known ill-posed problem. We propose that knowledge of the closu re relations, i.e., the stratification, of the orbits and bundles of the va rious forms may be applied in the staircase algorithm. Here we discuss and complete the mathematical theory of these relationships and show how they m ay be applied to the staircase algorithm. This paper is a continuation of o ur Part I paper on versal deformations, but it may also be read independent ly.