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This article is cited in 11 scientific papers (total in 11 papers)
Integrable Möbius-invariant evolutionary lattices of second order
V. E. Adler L.D. Landau Institute for Theoretical Physics, Chernogolovka, Russia
Abstract:
We solve the classification problem for integrable lattices of the form $u_{,t}=f(u_{-2},\dots,u_2)$ under the additional assumption of invariance with respect to the group of linear-fractional transformations. The obtained list contains five equations, including three new ones. Difference Miura-type substitutions are found, which relate these equations to known polynomial lattices. We also present some classification results for generic lattices.
Keywords:
integrability, symmetry, conservation law, Möbius invariantm cross-ratio.
Received: 04.05.2016
Citation:
V. E. Adler, “Integrable Möbius-invariant evolutionary lattices of second order”, Funktsional. Anal. i Prilozhen., 50:4 (2016), 13–25; Funct. Anal. Appl., 50:4 (2016), 257–267
Linking options:
https://www.mathnet.ru/eng/faa3255https://doi.org/10.4213/faa3255 https://www.mathnet.ru/eng/faa/v50/i4/p13
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