davidson

Versione 1.0.1 (2,9 KB) da Zuxin Jin
Davidson method for eigenvalue problem
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Aggiornato 20 apr 2019

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This is a single routine that uses the Davidson's iterative method to solve for a few of the lowest/highest eigenvalues of a real symmetric and preferably diagonally dominant matrix.

Reference:
Davidson, E.R., "The iterative calculation of a few of the lowest eigenvalues and corresponding eigenvectors of large real-symmetric matrices", J. Comput. Phys. 17, 87-94 (1975)

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Versione Pubblicato Note della release
1.0.1

fix the bug that vector d may contain inf.
1.0.0