@article{He2024, 
author = {Huiting He and Chungen Liu and Jiabin Zuo},
title = {Periodic solutions of a class of non-autonomous second-order discrete Hamiltonian systems},
year = {2024},
journal = {AIMS Mathematics},
volume = {9},
number = {2},
pages = {3303-3319},
keywords = {periodic solution, control function, the least action principle, saddle point theorem},
url = {https://www.sciopen.com/article/10.3934/math.2024161},
doi = {10.3934/math.2024161},
abstract = {In this paper, in the view of control functions, the existence of periodic solutions of the following second-order discrete Hamiltonian system         △          2        u  (  n  −  1  )  =  ∇  F  (  n  ,  u  (  n  )  )  ,      n  ∈      Z  with a generalized sublinear condition is further explored.}
}