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This package contains a Modern Fortran implementation of the Davidson diagonalization algorithms to compute several eigenvalue-eigenvector pairs of a symmetric matrix

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- Follows modern Fortran practices
- Allows both dense and matrix-free calculations.
- Implements different correction methods

The Davidson method is suitable for **diagonal-dominant symmetric matrices**, that are quite common

in certain scientific problems like electronic structure. The Davidson method could be not practical

for other kinds of symmetric matrices.

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License

- Apache-2.0

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