2 papers
math.NA2018
Symmetric and symplectic exponential integrators for nonlinear Hamiltonian systems
Yajun Wu, Bin Wang
This letter studies symmetric and symplectic exponential integrators when applied to numerically computing nonlinear Hamiltonian systems. We first establish the symmetry and symple…
math.NA2018
Arbitrary-order functionally fitted energy-diminishing methods for gradient systems
Bin Wang, Ting Li, Yajun Wu
It is well known that for gradient systems in Euclidean space or on a Riemannian manifold, the energy decreases monotonically along solutions. In this letter we derive and analyse…