About the Authors

Li Yin

Department of Mathematics, Binzhou University, Binzhou City, Shandong Province, China

Li-Guo Huang

Department of Mathematics, Binzhou University, Binzhou City, Shandong Province, China

and Feng Qi

College of Mathematics, Inner Mongolia University for Nationalities, Tongliao City, Inner Mongolia Autonomous Region, China
Department of Mathematics, College of Science, Tianjin Polytechnic University, Tianjin City, China;Institute of Mathematics, Henan Polytechnic University, Jiaozuo City, Henan Province, China

Corresponding Author

Email: yinli_79@163.com