Integrable discretizations for Toda-type lattice soliton equations
Zuo-Nong Zhu, Hongci Huang
Abstract
Zuo-Nong Zhu, Hongci Huang
Abstract
From a proper 2 × 2 discrete isospectral problem, a new integrable lattice soliton system is proposed. Integrable discretizations of a general Toda-type lattice soliton equation associated with the discrete isospectral problem are established. The Lagrangian and Newtonian forms of integrable discretizations of Toda-type lattice equations which occur in the literature are given uniformly and some new integrable discretizations of the Toda-type lattice are obtained.
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From a proper 2 × 2 discrete isospectral problem, a new integrable lattice soliton system is proposed. Integrable discretizations of a general Toda-type lattice soliton equation associated with the discrete isospectral problem are established. The Lagrangian and Newtonian forms of integrable discretizations of Toda-type lattice equations which occur in the literature are given uniformly and some new integrable discretizations of the Toda-type lattice are obtained.
Key concepts: Isospectral, Integrable system, Toda lattice, Lattice (music), Mathematical physics, Mathematics, Soliton, Peakon