论文信息 - Spectral pollution and second-order relative spectra for self-adjoint operators

Spectral pollution and second-order relative spectra for self-adjoint operators

We consider the phenomenon of spectral pollution arising in calculation of spectra of self-adjoint 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.

Michael Levitin | Eugene Shargorodsky | E. Shargorodsky | M. Levitin

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