Abstract
We consider the phenomenon of spectral pollution arising in calculation of spectra of selfadjoint operators by projection methods. We suggest a strategy of dealing with spectral pollution by using the so-called second-order relative spectra. The effectiveness of the method is illustrated by a detailed analysis of two model examples.
Original language | English |
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Pages (from-to) | 393-416 |
Number of pages | 24 |
Journal | IMA Journal of Numerical Analysis |
Volume | 24 |
Issue number | 3 |
DOIs | |
Publication status | Published - Jul 2004 |