https://cpb.iphy.ac.cn/en/article/doi/10.1088/1674-1056/22/9/090201?viewType=HTML
Symmetries and conserved quantities of discrete wave equation associated with the...
In this paper, we present a new method to obtain the Lie symmetries and conserved quantities of the discrete wave equation with the Ablowitz-Ladik-Lattice...
conserved quantitieswave equationassociated withsymmetriesdiscrete
https://researchwith.njit.edu/en/publications/conserved-quantities-in-stokes-flow-with-free-surfaces/
Conserved quantities in Stokes flow with free surfaces - New Jersey Institute of Technology
institute of technologyconserved quantitiesstokes flowfree surfacesnew jersey