Eigen problem

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#594

From: holmes
Date: Thu, 08 Oct 1992 17:59

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I have a large real symetric banded matrix (1000x1000) that I want
to find the first 30 eigenvectors and eigenvalues for. This matrix
is singular with the first 6 eigenvalues being 0.

Does anyone know of some fast method that will allow me to
specify a set number of eigenvalues to extract. I have seen the
Inverse Power method but how do you find the inverse of a singular
matrix? If anyone knows of books, papers or code that might help
could you please post the information to me.

Thanks in Advance

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Peter Holmes
Queensland University of Technology
Australia

EMAIL:  peterh@lime.eese.qut.edu.au
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From: holmes@qut.edu.au
Newsgroups: sci.math.num-analysis
Subject: Eigen problem
Message-ID: <1992Oct8.125936.56162@qut.edu.au>
Date: 8 Oct 92 12:59:36 EST
Organization: Queensland University of Technology
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