Forced oscillations for delay motion equations on manifolds
Pierluigi Benevieri, Alessandro Calamai, Massimo Furi, Maria Patrizia Pera · DOAJ (DOAJ: Directory of Open Access Journals) · 2007
We prove an existence result for $T$-periodic solutions of a $T$-periodic second order delay differential equation on a boundaryless compact manifold with nonzero Euler-Poincare characteristic. The approach is based on an existence result recently obtained by the authors for first order delay differential equations on compact manifolds with boundary.