Linear determining equations, differential constraints and invariant solutions

Details Linear determining equations, differential constraints and invariant solutions Linear determining equations, differential constraints and invariant solutions

2003-08-31

arxiv.org/abs/math-ph/0309001v1

Physics

Mathematical Physics

30 pages, TeX

Scientific paper

A construction of differential constraints compatible with partial differential equations is considered. Certain linear determining equations with parameters are used to find such differential constraints. They generalize the classical determining equations used in the search for admissible Lie operators. As applications of this approach non-linear heat equations and Gibbons-Tsarev's equation are discussed. We introduce the notion of an invariant solution under an involutive distribution and give sufficient conditions for existence of such a solution.

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