Hermitian 'quasi' Toeplitz matrix eigensystem solution needed.

Thread View: sci.math.num-analysis

1 messages

[T] Back to Threads [V] Tree View [G] Group Articles

1 total messages Started by Carlos Riveros Fri, 11 Sep 1992 14:27

#503

Author: Carlos Riveros
Date: Fri, 11 Sep 1992 14:27

20 lines
1416 bytes

Hi,

	I'm looking for a _fast_ algorithm/subroutine to compute the
eigenvalues/eigenvectors of a complex Hermitian 'almost Toeplitz' matrix,
that is a matrix that is complex Hermitian Toeplitz everywhere except in
the main diagonal, where all numbers are (real and) different.  Adicionally,
some of the sub/super-diagonals may be zeros.

	I don't need to compute all eigval/eigvec pairs, just those who are
greater than a given (negative) number.  I've found 'ch' EISPACK (*all* eigval/
eigvec of a complex hermitian matrix), and there are other routines to compute
just *some* eigval/eigvec of a complex general matrix, but I wonder if 
somebody knows of something more appropiate.

	Any information will be welcome.  Please respond by e-mail.  
Thanks in advance.

--Carlos Riveros		| Allied Geophysical Labs.
salrcr@archie.agl.uh.edu	| University of Houston.
agl3@jane.uh.edu

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads