A Note on the Equivalence of Methods to finding Nonclassical Determining Equations |
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| Authors: | J. Goard |
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| Affiliation: | School of Mathematics and Applied Statistics, University of Wollongong 2522, Wollongong, NSW, Australia |
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| Abstract: | In this note we prove that the method of Bîlã and Niesen to determine nonclassical determining equations is equivalent to that of Nucci’s method with heir-equations and thus in general is equivalent to using an appropriate form of generalised conditional symmetry. |
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| Keywords: | nonclassical symmetries generalised conditional symmetries |
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