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Discrete Lax pairs and hierarchies of integrable difference systems

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arxiv 2104.14529 v1 pith:TYEXHP2F submitted 2021-04-29 nlin.SI

classification nlin.SI
keywords integrablesystemsdifferencehierarchiesmatricesvariablesdiscreteedge
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abstract

We introduce a family of order $N\in \mathbb{N}$ Lax matrices that is indexed by the natural number $k\in \{1,\ldots,N-1\}.$ For each value of $k$ they serve as strong Lax matrices of a hierarchy of integrable difference systems in edge variables that in turn lead to hierarchies of integrable difference systems in vertex variables or in a combination of edge and vertex variables. Furthermore, the entries of the Lax matrices are considered as elements of a division ring, so we obtain hierarchies of discrete integrable systems extended in the non-commutative domain.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. On refactorization problems and rational Lax matrices of quadrirational Yang-Baxter maps

    nlin.SI 2025-01 conditional novelty 6.0 of 10

    A symmetry-based construction yields rational Lax matrices for the Lambda, H and F families of quadrirational Yang-Baxter maps, with the FIV map left out because it admits no symmetry.

  2. Non-Abelian elastic collisions, associated difference systems of equations and discrete analytic functions

    nlin.SI 2024-12 conditional novelty 6.0 of 10

    A single non-abelian system of equations unifies classical and relativistic elastic collisions, and its lattice reinterpretation subsumes both the linear and nonlinear theories of discrete analytic functions.

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