%0 Journal Article
%A Ji-feng CHU
%A Zuo-huan ZHENG
%A Zhe ZHOU
%T Almost Periodic Solutions by the Harmonic Balance Method
%D 2022
%R 10.1007/s10255-022-1026-3
%J 应用数学学报(英文版)
%P 943-954
%V 38
%N 4
%X We consider non-autonomous ordinary differential equations in two cases. One is the one-dimensional case that admits a condition of hyperbolicity, and the other one is the higher-dimensional case that admits an exponential dichotomy. For differential equations of this kind, we give a rigorous treatment of the Harmonic Balance Method to look for almost periodic solutions.
%U https://applmath.cjoe.ac.cn/jweb_yysxxb_en/CN/10.1007/s10255-022-1026-3