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Lie-Poisson groups and the Miura transformation

JM Figueroa-O'Farrill, S Stanciu

q-algarXiv:q-alg/9501027

Abstract

We point out that the recent proof of the Kupershmidt-Wilson theorem by Cheng and Mas-Ramos is underpinned by the Lie-Poisson property of the second Gel'fand-Dickey bracket. The supersymmetric Kupershmidt-Wilson theorem is also proved along these same lines. Finally we comment on the possible repercussions in the problem of the coproduct for W-algebras.

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