@Article{JCM-17-561,
author = {Tang , Yi-Fa},
title = {A Note on Construction of Higher-Order Symplectic Schemes from Lower-Order One via Formal Energies},
journal = {Journal of Computational Mathematics},
year = {1999},
volume = {17},
number = {6},
pages = {561--568},
abstract = {<p style="text-align: justify;">In this paper, we will prove by the help of formal energies only that one can improve the order of any symplectic scheme by modifying the Hamiltonian symbol $H$, and show through examples that this action exactly and directly simplifies Feng&#39;s way of construction of higher-order symplectic schemes by using higher-order terms of generating functions.</p>},
issn = {1991-7139},
doi = {https://doi.org/},
url = {http://global-sci.org/intro/article_detail/jcm/9126.html}
}