Feng Qi

Institute of Mathematics, Henan Polytechnic University, Jiaozuo City, Henan Province, China

Muhammad Amer Latif

College of Science, Department of Mathematics, University of Hail, Hail, Saudi Arabia

Wen-Hui Li

Department of Mathematics, College of Science, Tianjin Polytechnic University, Tianjin City, China

Sabir Hussain

Department of Mathematics, University of Engineering and Technology, Lahore, Pakistan