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Cohomological geometry of differential equations
March 6, 2019 19:20, Moscow, Independent University of Moscow, room 308
 


Lax representations, integrable hierarchies, and non-central extensions of symmetry algebras of differential equations

O. I. Morozov

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Abstract: I will talk about the technique for finding Lax representations of nonlinear PDEs via non-central extensions of their symmetry algebras that are generated by non-trivial exotic 2-cocycles. Examples will include Lax representations with non-removable spectral parameters and integrable hierarchies associated with some nonlinear PDEs.

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