Sharp error bounds for Ritz vectors and approximate singular vectors
We derive sharp bounds for the accuracy of approximate eigenvectors (Ritz vectors) obtained by the Rayleigh-Ritz process for symmetric eigenvalue problems. Using information that is available or easy to estimate, our bounds improve the classical Davis-Kahan theorem by a factor that can be arbitraril...
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| Format: | Journal article |
| Sprog: | English |
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American Mathematical Society
2020
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