2010
DOI: 10.1016/j.cpc.2010.07.046
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ERKN integrators for systems of oscillatory second-order differential equations

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Cited by 109 publications
(35 citation statements)
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“…Taking account of the oscillatory structure generated by the linear part My, Wu et al [24] proposed a standard form of the multi-frequency and multidimensional ERKN methods for (23) and derived the corresponding order conditions based on the extended Nyström tree theory, a tri-colored rooted tree theory (readers are referred to [24,25]). A remarkable advantage of ERKN methods is that both their internal stages and updates take into account the special oscillatory structures of the system (23) introduced by the linear term My, therefore, they can naturally integrate the multi-frequency and multidimensional oscillatory homogeneous system y 00 ðtÞ þ MyðtÞ ¼ 0 exactly.…”
Section: Multidimensional Extended Runge-kutta-nyström Integratorsmentioning
confidence: 99%
“…Taking account of the oscillatory structure generated by the linear part My, Wu et al [24] proposed a standard form of the multi-frequency and multidimensional ERKN methods for (23) and derived the corresponding order conditions based on the extended Nyström tree theory, a tri-colored rooted tree theory (readers are referred to [24,25]). A remarkable advantage of ERKN methods is that both their internal stages and updates take into account the special oscillatory structures of the system (23) introduced by the linear term My, therefore, they can naturally integrate the multi-frequency and multidimensional oscillatory homogeneous system y 00 ðtÞ þ MyðtÞ ¼ 0 exactly.…”
Section: Multidimensional Extended Runge-kutta-nyström Integratorsmentioning
confidence: 99%
“…Finally, the extension of the new methods proposed in this paper to the case where the ω 2 in (1) is a positive semi-definite is direct just in an analogous way to Wu et al [6] for multi-dimensional ARKN methods or Wu et al [19] for multi-dimensional ERKN methods.…”
Section: Discussionmentioning
confidence: 99%
“…We refer the reader to [5,6,9,12,23,24] for example. Recently, Wu et al [23] took account of the special structure of the system (5.6) introduced by the linear term Mq, which leads to the high-frequency oscillation in the solution, and formulated a standard form for a multi-frequency ERKN (extended RKN) integrator. ERKN integrators exhibit the correct qualitative behaviour much better than classical RKN methods due to using the special structure of the equation introduced by the linear term Mq.…”
Section: It Is Known That the Hamiltonian H(y) = H(p Q)mentioning
confidence: 99%