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On the Rate of Error Growth in Time for Numerical Solutions of Nonlinear Dispersive Wave Equations

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arxiv 2102.07376 v3 pith:MKIZYBHT submitted 2021-02-15 math.NA cs.NA

Hendrik Ranocha , Manuel Quezada de Luna , David I. Ketcheson This is my paper · ORCID
classification math.NAcs.NA
keywords numericalequationswaveerrormethodssolutionsdispersivegrows
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We study the numerical error in solitary wave solutions of nonlinear dispersive wave equations. A number of existing results for discretizations of solitary wave solutions of particular equations indicate that the error grows quadratically in time for numerical methods that do not conserve energy, but grows only linearly for conservative methods. We provide numerical experiments suggesting that this result extends to a very broad class of equations and numerical methods.

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