Abstract
The theory of the group properties of differential equations is generalized, and this makes it possible to obtain new results based on symmetry and the separation of variables in the basic equations of theoretical physics.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 6, pp. 57–64, June, 1977.
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Shapovalov, V.N. Symmetry of differential equations. I. Soviet Physics Journal 20, 741–747 (1977). https://doi.org/10.1007/BF00892758
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DOI: https://doi.org/10.1007/BF00892758