About the Authors

BAI-NI GUO

School of Mathematics and Informatics, Henan Polytechnic University, Jiaozuo City, Henan Province, China

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

Corresponding Author

Email: bai.ni.guo@gmail.com, bai.ni.guo@hotmail.com