Nonlinear Sciences – Exactly Solvable and Integrable Systems
Scientific paper
2004-02-11
Int.J.Mod.Phys. A20 (2005) 1367-1388
Nonlinear Sciences
Exactly Solvable and Integrable Systems
22 pages, LaTeX, v3: Minor changes
Scientific paper
10.1142/S0217751X05021087
An algebra isomorphism between algebras of matrices and difference operators is used to investigate the discrete integrable hierarchy. We find local and non-local families of R-matrix solutions to the modified Yang-Baxter equation. The three R-theoretic Poisson structures and the Suris quadratic bracket are derived. The resulting family of bi-Poisson structures include a seminal discrete bi-Poisson structure of Kupershmidt at a special value.
Aratyn Henrik
Bering Klaus
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