Periodic orbits near an equilibrium and a theorem by Alan Weinstein. (English) Zbl 0346.34024

Moser, Jürgen

Commun. Pure Appl. Math. 29, 727-747 (1976); addendum ibid. 31, 529-530 (1978).

MSC:

34C25	Periodic solutions to ordinary differential equations
34C05	Topological structure of integral curves, singular points, limit cycles of ordinary differential equations
70K05	Phase plane analysis, limit cycles for nonlinear problems in mechanics

References:

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