Resumen de The Monotonicity of the Apsidal Angle Using the Theory of Potential Oscillators

J. D. Rojas

• In a central force system the angle between two successive passages of a body through pericenters is called the apsidal angle. In this paper we prove that for central forces of the form f(r)∼λr-(α+1) with α<2 the apsidal angle is a monotonous function of the energy, or equivalently of the orbital eccentricity.