1. School of Economics, Henan Kaifeng College of Science Technology and Communication, Kaifeng, Henan, China
2. Department of Mathematics, Higher Institute for Applied Sciences and Technology, Damascus, Syria
3. Department of Mathematics, School of Arts and Sciences, International University of Beirut, Lebanese International University, Beirut, Lebanon
4. Institute of Mathematics, Henan Polytechnic University, Jiaozuo, Henan, China + Independent Researcher, Dallas, USA