From: kovarik@mcmail.cis.McMaster.CA (Zdislav V. Kovarik) Subject: Re: sylvester-equation Date: 31 Jul 2000 14:56:32 -0400 Newsgroups: sci.math.num-analysis Summary: [missing] In article <8m3md6$b6sop$1@hades.rz.uni-sb.de>, wrote: :hi, : :i'm looking for an efficient solver of the sylvester-equation : : AX - XB = C : :where A, B, C and X are matrices. : :yours, uwe. Standard reference: Matrix Computations, by Golub & Van Loan (3rd Ed.) Johns Hopkins 1996 ISBN 0-8018-5414-8 Section 7.6.3 "Block Diagonalization", with Bartels-Stewart Algorithm (assumes A and B upper triangularized by similarities). Good luck, ZVK(Slavek)