For EDITORS

For READERS

All Issues

Vol.7, 2017
Vol.6, 2016
Vol.5, 2015
Vol.4, 2014
Vol.3, 2013
Vol.2, 2012
Vol.1, 2011
Volume 7, Number 3, 2017, Pages 931-941                                                                DOI:10.11948/2017058
Nontrivial periodic solutions for second-order differential delay equations
Qi Wang,Wenjie Liu and Mei Wang
Keywords:Differential delay equations, periodic solutions, variational calculus, Malsov-type index, Morse theory.
Abstract:
      In this paper, we consider the existence of periodic solutions for second-order differential delay equations. Some existence results are obtained using Malsov-type index and Morse theory, which extends and complements some existing results.
PDF      Download reader