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Extension of the symmetry of evolution equations. (English. Russian original) Zbl 0505.35001

Sov. Math., Dokl. 25, 173-176 (1982); translation from Dokl. Akad. Nauk SSSR 262, 1056-1059 (1982).

MSC:

35A30 Geometric theory, characteristics, transformations in context of PDEs
35G20 Nonlinear higher-order PDEs
35Q99 Partial differential equations of mathematical physics and other areas of application
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