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On a Recently Introduced Fifth-Order Bi-Hamiltonian Equation and Trivially Related Hamiltonian Operators
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- Фізико-технічні та математичні науки
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- Symmetry, Integrability and Geometry: Methods and Applications (SIGMA)
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- Symmetry, Integrability and Geometry: Methods and Applications, 2011, том 7
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On a Recently Introduced Fifth-Order Bi-Hamiltonian Equation and Trivially Related Hamiltonian Operators
Інший ID:
2010 Mathematics Subject Classification: 37K05; 37K10
DOI: http://dx.doi.org/10.3842/SIGMA.2011.081
DOI: http://dx.doi.org/10.3842/SIGMA.2011.081
Посилання:
On a Recently Introduced Fifth-Order Bi-Hamiltonian Equation and Trivially Related Hamiltonian Operators / D. Talati, R. Turhan // Symmetry, Integrability and Geometry: Methods and Applications. — 2011. — Т. 7. — Бібліогр.: 16 назв. — англ.
Підтримка:
R.T. thanks Professors M. G¨urses and A. Karasu for stimulating discussions; and Professor
V.G. Kac for comments and clarification of the parametric nature of their results, removing
a misinterpretation with incorrect consequences. D.T. is supported by TUB¨ ˙ITAK PhD Fellowship for Foreign Citizens.
Дата:
2011
Переглядів:
567
Завантажень:
243
Анотація:
We show that a recently introduced fifth-order bi-Hamiltonian equation with a differentially constrained arbitrary function by A. de Sole, V.G. Kac and M. Wakimoto is not a new one but a higher symmetry of a third-order equation. We give an exhaustive list of cases of the arbitrary function in this equation, in each of which the associated equation is inequivalent to the equations in the remaining cases. The equations in each of the cases are linked to equations known in the literature by invertible transformations. It is shown that the new Hamiltonian operator of order seven, using which the introduced equation is obtained, is trivially related to a known pair of fifth-order and third-order compatible Hamiltonian operators. Using the so-called trivial compositions of lower-order Hamiltonian operators, we give nonlocal generalizations of some higher-order Hamiltonian operators.
