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Dispersionless Davey-Stewartson system: Lie symmetry algebra, symmetry group and exact solutions (2102.10664v2)
Published 21 Feb 2021 in nlin.SI and math.AP
Abstract: Lie symmetry algebra of the dispersionless Davey-Stewartson (dDS) system is shown to be infinite-dimensional. The structure of the algebra turns out to be Kac-Moody-Virasoro one, which is typical for integrable evolution equations in $2+1$-dimensions. Symmetry group transformations are constructed using a direct (global) approach. They are split into both connected and discrete ones. Several exact solutions are obtained as an application of the symmetry properties.