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Lax representations with non-removable parameter and exotic cohomology of symmetry algebras of PDEs
Published 8 Dec 2018 in nlin.SI | (1812.03338v1)
Abstract: This paper develops the technique of constructing Lax representations for PDEs via non-central extensions of their contact symmetry algebras. We show that the method is applicable to the Lax representations with non-removable spectral parameters.
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