Periodic solutions of differential equations in the cylindrical space
Periodic Solutions of Scalar Differential Equations without Uniqueness
The note presents a simple proof of a result due to F. Obersnel and P. Omari on the existence of periodic solutions with an arbitrary period of the first order scalar differential equation, provided equation has an n-periodic solution with the minimal period n > 1.
Boundedness of solutions of an n-th order nonlinear differential equation
Si danno condizioni sufficienti per la limitatezza globale delle soluzioni di un'equazione differenziale ordinaria non lineare di ordine n.
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