V. E. Adler, A. B. Shabat, R. I. Yamilov, “Symmetry approach to the integrability problem”, TMF, 2000, Volume 125, Number 3,Pages <nobr>355

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Symmetry approach to the integrability problem

V. E. Adler^a, A. B. Shabat^b, R. I. Yamilov^a

^a Institute of Mathematics with Computing Centre, Ufa Science Centre, Russian Academy of Sciences
^b L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences

Abstract: We review the results of the twenty-year development of the symmetry approach to classifying integrable models in mathematical physics. The generalized Toda chains and the related equations of the nonlinear Schrödinger type, discrete transformations, and hyperbolic systems are central in this approach. Moreover, we consider equations of the Painlevé type, master symmetries, and the problem of integrability criteria for $(2+1)$-dimensional models. We present the list of canonical forms for $(1+1)$-dimensional integrable systems. We elaborate the effective tests for integrability and the algorithms for reduction to the canonical form.

Received: 19.07.2000

DOI: 10.4213/tmf675