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

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/156460The smooth second Bogolyubov's theorem is generalized for Lipschitz systems.Accepted to RAS DokladyClassical Analysis and ODEs34C29; 34C25; 47H11On Mitropol'skii Yu.A.'s Theorem on Periodic Solutions of Systems of Nonlinear Differential Equations with Non-Differentiable Right-Hand-Sidestext