@article{Lu2025, 
author = {Haihua Lu and Tianjue Shi},
title = {Multiple periodic solutions of parameterized systems coupling asymmetric components and linear components},
year = {2025},
journal = {AIMS Mathematics},
volume = {10},
number = {4},
pages = {8988-9010},
keywords = {periodic solutions, Poincaré-Birkhoff theorem, parameterized, sign-changing},
url = {https://www.sciopen.com/article/10.3934/math.2025412},
doi = {10.3934/math.2025412},
abstract = {We investigated the multiplicity of periodic solutions for parameterized systems coupling asymmetric components and linear components, where the nonlinearity is allowed to be sign-changing. Our approach was based on an extended version of the Poincaré-Birkhoff theorem, a rotation number approach, and a new existence result.}
}