We apply nonconjugate subgroups of the Poіncaré group P(1,4) to perform a partial preliminary group classification of the nonlinear five-dimensional d’Alembert equation. We also present a brief survey of the results obtained.
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Translated from Matematychni Metody ta Fizyko-Mekhanichni Polya, Vol. 55, No. 3, pp. 35–43, July–September, 2012.
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Fedorchuk, V.I. On the Partial Preliminary Group Classification of the Nonlinear Five-Dimensional D’Alembert Equation. J Math Sci 194, 166–175 (2013). https://doi.org/10.1007/s10958-013-1517-0
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DOI: https://doi.org/10.1007/s10958-013-1517-0