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Periodic solutions to some $$N$$-body type problems: The fixed energy case. (English) Zbl 0807.70009
The problem of periodic solutions to some $$N$$-body type problem having prescribed energy has been considered in the existing literature under additional symmetry conditions on the potentials. In the present paper, the authors are concerned with nonsymmetrical potentials; their approach follows the ideas introduced in P. Majer and S. Terracini [Arch. Ration. Mech. Anal. 124, No. 4, 381-404 (1993; Zbl 0782.70010)].

##### MSC:
 70F10 $$n$$-body problems 34C25 Periodic solutions to ordinary differential equations
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##### References:
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