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Integrable three-dimensional coupled nonlinear dynamical systems related with centrally extended operator Lie algebras

Hentosh O. Ye., Prykarpatsky A. K.

Opuscula Mathematica

2007

Vol. 27, no. 2

231-244

A hierarchy of Lax-type flows on a dual space to the centrally extended Lie algebra of integral-differential operators with matrix-valued coefficients is considered. By means of a specially constructed Backlund transforniation the Hamiltonian representations for these flows coupled with suitable eigenfunctions and adjoint eigenfunctions evolutions of associated spectral problems are obtained. The Hamiltonian description of the corresponding set of additional symmetry hierarchies is represented. The relation of these hierarchies with Lax integrable (3+1)-dimensional nonlinear dynamical systems and their triple Lax-type linearizations is analysed.