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A scheme with a higher-order discrete invariant for the KdV equation |
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| Affiliation: | Department of Mathematics, Tianjin Normal University Tianjin 300073, P.R. China |
| Abstract: | A new difference scheme with a higher-order discrete invariant for the KdV equation is proposed. Comparisons between the scheme and several other utilized schemes show that the new scheme is more effective in restraining nonlinear numerical instability. |
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