Seminar talk, 19 December 2018

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Speaker: Oleg Morozov

Title: Lax representations and exotic cohomology of symmetry algebras of PDEs

Abstract:
My talk will describe the technique of constructing Lax representations for partial differential equations via non-central extensions of their contact symmetry algebras. The examples will include Lax representations with non-removable parameters, two-component generalizations, and integrable hierarchies associated to some PDEs.