Trigonometric integrators for oscillatory linear Hamiltonian differential equations are considered.Under a condition of Hairer&Lubich on the filter functions in the method,a modified energy is derived that is exactly ...
The multi-frequency and multi-dimensional adapted Runge-Kutta^NystrSm (ARKN) integrators, and multi-frequency and multi-dimensional extended Runge-Kutta-NystrSm (ERKN) integrators have been developed to efficientl...
This work is subsidized by the special funds for major state basic research projects (No.1999032800).
A composition method for constructing high order multisymplectic integrators is presented in this paper. The basic idea is to apply composition method to both the time and the space directions. We also obtain a genera...