Lie symmetry analysis, optimal system and conservation laws of a new (2+1)-dimensional KdV system
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"Lie symmetry analysis, optimal syst..." refers methods in this paper
...A 287 257–67 [5] Ovsiannikov L V 1982 Group Analysis of Differentional Equations (New York: Academic) [6] Olver P J 1993 Applications of Lie Groups to Differential Equations (New York: Springer) [7] Ibragimov N H 2007 J. Math....
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...To classify group invariant solutions, one should classify the subalgebra of the Lie algebra generated by Lie point symmetries, so the definition of one-dimensional optimal system was came up with by Ovsiannikov [5, 9, 10] using a global matrix for the adjoint transformation, and then Olver [6, 16] introduced one method, which was used invariants and adjoint operators to simplify a general element in Lie algebra as much as possible....
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