Abstract
We present integrability criterion for the Egorov systems of hydrodynamic type. We find the general solution by the generalized hodograph method and give examples. We discuss a description of triorthogonal curvilinear coordinate systems from the standpoint of reciprocal transformations.
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Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 150, No. 2, pp. 263–285, February, 2007.
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Pavlov, M.V. Integrability of the Egorov systems of hydrodynamic type. Theor Math Phys 150, 225–243 (2007). https://doi.org/10.1007/s11232-007-0017-0
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DOI: https://doi.org/10.1007/s11232-007-0017-0