Geodesic
B\"acklund transformations for the~Jacobi system on an~ellipsoid
Teoretičeskaâ i matematičeskaâ fizika, Tome 192 (2017) no. 3, pp. 473-488

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We consider analogues of auto- and hetero-Bäcklund transformations for the Jacobi system on a three-axes ellipsoid. Using the results in a Weierstrass paper, where the change of times reduces integrating the equations of motion to inverting the Abel mapping, we construct the differential Abel equations and auto-Bäcklund transformations preserving the Poisson bracket with respect to which the equations of motion written in the Weierstrass form are Hamiltonian. Transforming this bracket to the canonical form, we can construct a new integrable system on the ellipsoid with a Hamiltonian of the natural form and with a fourth-degree integral of motion in momenta.
Keywords: integrable system, Bäcklund transformation, Jacobi system on an ellipsoid. 
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     author = {A. V. Tsiganov},
     title = {B\"acklund transformations for {the~Jacobi} system on an~ellipsoid},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {473--488},
     publisher = {mathdoc},
     volume = {192},
     number = {3},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2017_192_3_a5/}
}
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A. V. Tsiganov. B\"acklund transformations for the~Jacobi system on an~ellipsoid. Teoretičeskaâ i matematičeskaâ fizika, Tome 192 (2017) no. 3, pp. 473-488. http://geodesic.mathdoc.fr/item/TMF_2017_192_3_a5/