paper

On Mitropol'skii Yu.A.'s Theorem on Periodic Solutions of Systems of Nonlinear Differential Equations with Non-Differentiable Right-Hand-Sides

arXiv:0803.1008

Abstract

The smooth second Bogolyubov's theorem is generalized for Lipschitz systems.

Accepted to RAS Doklady

On Mitropol'skii Yu.A.'s Theorem on Periodic Solutions of Systems of Nonlinear Differential Equations with Non-Differentiable Right-Hand-Sides · wovepaper