Gardado en:
| Main Authors: | , |
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| Formato: | Preprint |
| Publicado: |
2020
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| Subjects: | |
| Acceso en liña: | https://arxiv.org/abs/2004.09793 |
| Tags: |
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Table of Contents:
- In this paper we consider some rational approximations to the fractional powers of self-adjoint positive operators, arising from the Gauss-Laguerre rules. We derive practical error estimates that can be used to select a priori the number of Laguerre points necessary to achieve a given accuracy. We also present some numerical experiments to show the effectiveness of our approaches and the reliability of the estimates.