Bicomplexes and Integrable Models

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We associate bicomplexes with several integrable models in such a way that conserved currents are obtained by a simple iterative construction. Gauge transformations and dressings are discussed in this framework and several examples are presented, including the nonlinear Schrodinger and sine-Gordon equations, and some discrete models.
17 pages, LaTeX, uses amssymb.sty and diagrams.sty

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