Regular and Chaotic Dynamics

, Volume 20, Issue 1, pp 74–93 | Cite as

Simultaneous separation for the Neumann and Chaplygin systems

  • Andrey V. TsiganovEmail author


The Neumann and Chaplygin systems on the sphere are simultaneously separable in variables obtained from the standard elliptic coordinates by the proper Bäcklund transformation. We also prove that after similar Bäcklund transformations other curvilinear coordinates on the sphere and on the plane become variables of separation for the system with quartic potential, for the Hénon-Heiles system and for the Kowalevski top. This allows us to speak about some analog of the hetero Bäcklund transformations relating different Hamilton-Jacobi equations.


bi-Hamiltonian geometry Bäcklund transformations separation of variables 

MSC2010 numbers

37K35 53D22 70H06 


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© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  1. 1.St. Petersburg State UniversitySt. PetersburgRussia

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