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arXiv · 0904.3981

Bi-Hamiltonian representation, symmetries and integrals of mixed heavenly and Husain systems

M. B. Sheftel·D. Yazici
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Abstract

In the recent paper by one of the authors (MBS) and A. A. Malykh on the classification of second-order PDEs with four independent variables that possess partner symmetries (J. Phys. A: Math. Theor. Vol. 42 (2009) 395202 (20pp)), mixed heavenly equation and Husain equation appear as closely related canonical equations admitting partner symmetries. Here for the mixed heavenly equation and Husain equation, formulated in a two-component form, we present recursion operators, Lax pairs of Olver-Ibragimov-Shabat type and discover their Lagrangians, symplectic and bi-Hamiltonian structure. We obtain all point and second-order symmetries, integrals and bi-Hamiltonian representations of these systems and their symmetry flows together with infinite hierarchies of nonlocal higher symmetries.

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M. B. Sheftel, D. Yazici. 2010-05-04. Bi-Hamiltonian representation, symmetries and integrals of mixed heavenly and Husain systems. https://doi.org/10.1142/s1402925110001021

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