2003
DOI: 10.1007/s00220-002-0762-8
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Classification of Integrable Equations on Quad-Graphs. The Consistency Approach

Abstract: A classification of discrete integrable systems on quad-graphs, i.e. on surface cell decompositions with quadrilateral faces, is given. The notion of integrability laid in the basis of the classification is the threedimensional consistency. This property yields, among other features, the existence of the discrete zero curvature with a spectral parameter. For all integrable systems of the obtained exhaustive list, the so called three-leg forms are found. This establishes Lagrangian and symplectic structures for… Show more

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Cited by 532 publications
(2,098 citation statements)
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References 29 publications
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“…This is a discrete version of the potential modified KdV equation originally presented in [12] and corresponds under a gauge tranformation to H 3 equation in [1] for δ = 0. The latter equation follows directly from the YB map (10) by setting x = w k+1,l w k,l , y = w k+1,l+1 w k+1,l , u = w k+1,l+1 w k,l+1 and v = w k,l+1 w k,l .…”
Section: One-dimensional Elastic Collisions As Yb Mapsmentioning
confidence: 99%
“…This is a discrete version of the potential modified KdV equation originally presented in [12] and corresponds under a gauge tranformation to H 3 equation in [1] for δ = 0. The latter equation follows directly from the YB map (10) by setting x = w k+1,l w k,l , y = w k+1,l+1 w k+1,l , u = w k+1,l+1 w k,l+1 and v = w k,l+1 w k,l .…”
Section: One-dimensional Elastic Collisions As Yb Mapsmentioning
confidence: 99%
“…Уравнение Виале характеризуется как интегрируемое, поскольку его алгебраическая энтропия обращается в нуль [21], в то время как инте-грируемость уравнений АБС следует из их 3D-совместности [18]. Мы покажем, что эти уравнения являются интегрируемыми также в том смысле, что они допускают бесконечные иерархии симметрий, которые могут быть построены при помощи ре-курсионных операторов.…”
Section: рекурсионный оператор симметрии и законы сохранения для ураunclassified
“…где k -кососимметричная функция решеточных параметров, а f -симметричный и биквадратный многочлен по u и x [18]. Многочлены f (u, x; α) для уравнений АБС перечислены в приложении.…”
Section: рекурсионный оператор симметрии и законы сохранения для ураunclassified
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