New block matrix spectral problem and Hamiltonian structure of the discrete integrable coupling system

2008 ◽  
Vol 372 (24) ◽  
pp. 4353-4360 ◽  
Author(s):  
Fajun Yu
Keyword(s):  
Spectral Problem ◽  
Hamiltonian Structure ◽  
Block Matrix ◽  
Coupling System ◽  
Matrix Spectral Problem ◽  
Integrable Coupling

ADJOINT SYMMETRY CONSTRAINTS AND INTEGRABLE COUPLING SYSTEM OF MULTICOMPONENT KN EQUATIONS

2011 ◽  
Vol 25 (21) ◽  
pp. 2841-2852 ◽  
Author(s):  
FA-JUN YU
Keyword(s):  
Spectral Problem ◽  
Arbitrary Order ◽  
Hamiltonian Formulation ◽  
Soliton Equation ◽  
Order Matrix ◽  
Coupling System ◽  
Soliton Hierarchy ◽  
Symmetry Constraints ◽  
Matrix Spectral Problem ◽  
Integrable Coupling

A soliton hierarchy of multicomponent KN equations is generated from an arbitrary order matrix spectral problem, along with its bi-Hamiltonian formulation. Adjoint symmetry constraints are presented to manipulate binary nonlinearization for the associated arbitrary order matrix spectral problem. Finally, a class of integrable coupling systems of the multicomponent KN soliton equation hierarchy is obtained using Ma's method associated with enlarging spectral problems [W. X. Ma, Phys. Lett. A316, 72–76 (2003)].

scholarly journals On (2+1)-dimensional expanding integrable model of the Davey-Stewartson hierarchy

2021 ◽  
Vol 25 (6 Part B) ◽  
pp. 4431-4439
Author(s):  
Xiu-Rong Guo ◽  
Fang-Fang Ma ◽  
Juan Wang
Keyword(s):  
Lie Algebras ◽  
Hamiltonian Structure ◽  
Integrable Model ◽  
Coupling System ◽  
Integrable Coupling ◽  
Type Abstraction Hierarchy

This paper mainly investigates the reductions of an integrable coupling of the Levi hierarchy and an expanding model of the (2+1)-dimensional Davey-Stewartson hierarchy. It is shown that the integrable coupling system of the Levi hierarchy possesses a quasi-Hamiltonian structure under certain constraints. Based on the Lie algebras construct, The type abstraction hierarchy scheme is used to gener?ate the (2+1)-dimensional expanding integrable model of the Davey-Stewartson hierarchy.

scholarly journals A Hierarchy of Discrete Integrable Coupling System with Self-Consistent Sources

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Yuqing Li ◽  
Huanhe Dong ◽  
Baoshu Yin
Keyword(s):  
Quadratic Form ◽  
Hamiltonian Structure ◽  
Liouville Integrability ◽  
Soliton Equation ◽  
Coupling System ◽  
Self Consistent ◽  
Integrable Coupling

Integrable coupling system of a lattice soliton equation hierarchy is deduced. The Hamiltonian structure of the integrable coupling is constructed by using the discrete quadratic-form identity. The Liouville integrability of the integrable coupling is demonstrated. Finally, the discrete integrable coupling system with self-consistent sources is deduced.

scholarly journals A Soliton Hierarchy Associated with a Spectral Problem of 2nd Degree in a Spectral Parameter and Its Bi-Hamiltonian Structure

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Yuqin Yao ◽  
Shoufeng Shen ◽  
Wen-Xiu Ma
Keyword(s):  
Conservation Laws ◽  
Spectral Problem ◽  
Spectral Parameter ◽  
Hamiltonian Structure ◽  
Trace Identity ◽  
Liouville Integrability ◽  
Hamiltonian Structures ◽  
Zero Curvature ◽  
Soliton Hierarchy ◽  
Matrix Spectral Problem

Associated withso~(3,R), a new matrix spectral problem of 2nd degree in a spectral parameter is proposed and its corresponding soliton hierarchy is generated within the zero curvature formulation. Bi-Hamiltonian structures of the presented soliton hierarchy are furnished by using the trace identity, and thus, all presented equations possess infinitely commuting many symmetries and conservation laws, which implies their Liouville integrability.

THE NEGATIVE AND POSITIVE INTEGRABLE COUPLING HIERARCHIES DERIVED FROM A FOUR BY FOUR MATRIX SPECTRAL PROBLEM

2010 ◽  
Vol 24 (30) ◽  
pp. 2955-2970
Author(s):  
XI-XIANG XU
Keyword(s):  
Hamiltonian System ◽  
Spectral Problem ◽  
Spectral Parameter ◽  
Hamiltonian Form ◽  
Liouville Integrability ◽  
Positive Power ◽  
Integrable Lattice ◽  
Lax Operator ◽  
Matrix Spectral Problem ◽  
Integrable Coupling

Discrete integrable coupling hierarchies of two existing integrable lattice families are derived from a four by four discrete matrix spectral problem. It is shown that the obtained integrable coupling hierarchies respectively corresponds to negative and positive power expansions of the Lax operator with respect to the spectral parameter. Then, the Hamiltonian form of the negative integrable coupling hierarchy is constructed by using the discrete variational identity. Finally, Liouville integrability of each obtained discrete Hamiltonian system is demonstrated.

A discrete iso-spectral problem with positive and negative hierarchies and integrable coupling system

2009 ◽  
Vol 39 (4) ◽  
pp. 1497-1503
Author(s):  
Haiyong Ding ◽  
Peng Hua ◽  
Junben Zhang ◽  
Hongye Chen
Keyword(s):  
Spectral Problem ◽  
Coupling System ◽  
Integrable Coupling

scholarly journals A super Degasperis–Procesi equation and related integrable systems

2021 ◽  
Vol 477 (2245) ◽  
pp. 20200780
Author(s):  
Binfang Gao ◽  
Kai Tian ◽  
Qing Ping Liu
Keyword(s):  
Conservation Laws ◽  
Spectral Problem ◽  
Integrable Systems ◽  
Hamiltonian Structure ◽  
Reciprocal Transformation ◽  
Matrix Spectral Problem

Based on a 4 × 4 matrix spectral problem, a super Degasperis–Procesi (DP) equation is proposed. We show that under a reciprocal transformation, the super DP equation is related to the first negative flow of a super Kaup–Kupershmidt (KK) hierarchy, which turns out to be a particular reduction of a super Boussinesq hierarchy. The bi-Hamiltonian structure of the super Boussinesq hierarchy is established and subsequently produces a Hamiltonian structure, as well as a conjectured symplectic formulation of the super KK hierarchy via suitable reductions. With the help of the reciprocal transformation, the bi-Hamiltonian representation of the super DP equation is constructed from that of the super KK hierarchy. We also calculate a positive flow of the super DP hierarchy and explain its relations with the super KK equation. Infinitely many conservation laws are derived for the super DP equation, as well as its positive flow.

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