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Simple Lax Description of the ILW Hierarchy (1809.00271v3)
Published 2 Sep 2018 in math-ph, math.AG, and math.MP
Abstract: In this note we present a simple Lax description of the hierarchy of the intermediate long wave equation (ILW hierarchy). Although the linear inverse scattering problem for the ILW equation itself was well known, here we give an explicit expression for all higher flows and their Hamiltonian structure in terms of a single Lax difference-differential operator.
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