Authors
Hongye Wang
Zhengzhou University, School of Mathematics and Statistics, Basic Mathematics, China
Yan Wang
Zhengzhou University, School of Mathematics and Statistics, Basic Mathematics, China
© 2022 Hongye Wang, Yan Wang, published by Lucian Blaga University of Sibiu
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.