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- W2140285215 abstract "When Lie-group integrators such as those based on the Magnus expansion are applied to linear systems of ODEs, it is necessary to evaluate matrix exponentials. This leads to a reduction in their computational efficiency when the dimension of the matrix is very large. For quadratic Lie groups it is possible to approximate the matrix exponential by a rational function and still preserve the Lie-group structure, but this is no longer true in the important case of the special linear group. In this paper we propose a new class of integration algorithms especially designed to avoid this problem. They are based on expressing the solution as a product of upper and lower triangular matrices obtained explicitly in terms of quadratures. We analyse the main features of the procedure and its feasibility as a practical numerical method." @default.
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- W2140285215 date "2007-08-01" @default.
- W2140285215 modified "2023-09-29" @default.
- W2140285215 title "New numerical integrators based on solvability and splitting" @default.
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- W2140285215 doi "https://doi.org/10.1016/j.cam.2006.01.050" @default.
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