Abstract:
We consider partial differential equations of variational problems with infinite symmetry groups. We study local conservation laws associated with arbitrary functions of one variable in the group generators. We show that only symmetries with arbitrary functions of dependent variables lead to an infinite number of conservation laws. We also calculate local conservation laws for the potential Zabolotskaya–Khokhlov equation for one of its infinite subgroups.
This publication is cited in the following 5 articles:
Rosenhaus V., Gandarias M., “On conserved densities and boundary conditions for the Davey-Stewartson equations”, J. Phys. A, 43:4 (2010), 045206, 13 pp.
V. Rosenhaus, “Infinite conservation laws for differential systems”, Theoret. and Math. Phys., 160:1 (2009), 1042–1049
V. Rosenhaus, “An infinite set of conservation laws for infinite symmetries”, Theoret. and Math. Phys., 151:3 (2007), 869–878
Rosenhaus V., “Boundary conditions and conserved densities for potential Zabolotskaya-Khokhlov equation”, J. Nonlinear Math. Phys., 13:2 (2006), 255–270
Rosenhaus V., “On conserved densities and asymptotic behaviour for the potential Kadomtsev-Petviashvili equation”, J. Phys. A, 39:24 (2006), 7693–7703