Authors
Xihong Yan
College of Mathematics and Statistics, Taiyuan Normal University, China
Shiyu Hao
College of Mathematics and Statistics, Taiyuan Normal University, Jinzhong, China
© 2024 Xihong Yan, Shiyu Hao, published by Poznan University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.