@Article{JCM-33-5, author = {Yang, He and Yajuan, Sun and Zaijiu, Shang}, title = {Integrable Discretisation of the Lotka-Volterra System}, journal = {Journal of Computational Mathematics}, year = {2015}, volume = {33}, number = {5}, pages = {468--494}, abstract = {
In this paper, we apply Hirota's discretisation to a three-dimensional integrable Lotka-Volterra system. By analyzing the three-dimensional modified equation of the resulting numerical method, we show that it is volume-preserving, and has two independent first integrals. Moreover, it can be formally reduced to a system in one dimension via a volume-preserving transformation. If the given initial value is located in the positive octant, we prove that the numerical solution is confined to a one-dimensional connected and compact space which is diffeomorphic to a circle.
}, issn = {1991-7139}, doi = {https://doi.org/10.4208/jcm.1504-m4543}, url = {https://global-sci.com/article/84610/integrable-discretisation-of-the-lotka-volterra-system} }