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A trihamiltonian extension of the Toda lattice

Chiara Andrà, Luca Degiovanni, Guido Magnano

nlin.SIarXiv:nlin/0512067

Abstract

A new Poisson structure on a subspace of the Kupershmidt algebra is defined. This Poisson structure, together with other two already known, allows to construct a trihamiltonian recurrence for an extension of the periodic Toda lattice with n particles. Some explicit examples of the construction and of the first integrals found in this way are given.

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