A numerical algorithm for computing a basis for the root subspace at a nonderogatory eigenvalue of a multiparameter system

摘要

A numerical algorithm for the calculation of a basis for the root subspace at a nonderogatory eigenvalue of a finite dimensional multiparameter system is given. It is based on the algorithm proposed by Kosir [1]. The perturbation theory for the algorithm is studied and a new stopping criterion is proposed. At the end two numerical examples are given. (C) 1998 Elsevier Science Inc. All rights reserved. [References: 18]