Abstract
We discover an important new case in the classical problem of the classification of nonlinear hyperbolic equations possessing integrals. In the general (least degenerate) case, in addition, we obtain a formula describing the splitting of the right-hand side of such equations with respect to the first derivatives.
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Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 120, No. 1, pp. 20–26, July, 1999.
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Zhiber, A.V., Sokolov, V.V. New example of a nonlinear hyperbolic equation possessing integrals. Theor Math Phys 120, 834–839 (1999). https://doi.org/10.1007/BF02557393
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DOI: https://doi.org/10.1007/BF02557393