About the Authors

Tian-Yu Zhang

College of Mathematics, Inner Mongolia University for Nationalities, Tongliao City, Inner Mongolia Autonomous Region, China

Feng Qi

Department of Mathematics, School of Science, Tianjin Polytechnic University, Tianjin City, China
Institute of Mathematics, Henan Polytechnic University, jiaozuo City, Henan Province, China

Corresponding Author

Email: zhangtianyu7010@126.com