Current inverse iteration software can fail (Q1279696)
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scientific article; zbMATH DE number 1251186
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Current inverse iteration software can fail |
scientific article; zbMATH DE number 1251186 |
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Current inverse iteration software can fail (English)
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17 August 1999
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The author discusses various issues arising in the implementation of inverse iteration using reorthogonaliszation to compute eigenvectors of real symmetric matrices when the eigenvalues agree to more than three digits relative to the norm. Both theoretical and empirical failures of these implementations in EISEPACK and LAPACK are demonstrated. Finally, alternate approaches to the unresolved issues are mentioned.
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inverse iteration
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reorthogonaliszation
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eigenvectors
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real symmetric matrices
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eigenvalues
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EISEPACK
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LAPACK
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