Existence of almost periodic solutions for forced perturbed systems with piecewise constant argument

Journal of Mathematical Analysis and Applications - Tập 333 - Trang 798-816 - 2007
Yonghui Xia1,2, Zhenkun Huang3, Maoan Han1
1The Institute of Mathematics, Shanghai Normal University, Shanghai 200234, China
2College of Mathematics and Computer Science, Fuzhou University, Fuzhou, Fujian 350002, China
3School of Sciences, Jimei University, Xiamen, Fujian 361021, China