Multiplicity results of periodic solutions for systems of first order delay differential equation

作者：Wu Ke; Wu Xian^*

来源：Applied Mathematics and Computation, 2011, 218(5): 1765-1773.

DOI：10.1016/j.amc.2011.06.060

• Variational methods
• Delay differential system
• Critical point

This paper is concerned with the periodic solutions of the following delay non-autonomous systems
u'(t) = -f(t, u(t-r)),
where r > 0, f is an element of C(R-1 x R-n,R-n) satisfies f(t + r,z) = f(t, z) for all z is an element of R-n. Some multiplicity results of periodic solutions of (1) are obtained via variational methods.

• 出版日期2011-11-1
• 单位昭通师范高等专科学校; 云南师范大学