1. School of Mathematics and Informatics, Henan Polytechnic University, Jiaozuo City, Henan Province, China
2. Department of Mathematics and Statistics, University of Victoria, Victoria, British Columbia VW R, Canada + Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan, Republic of China + Department of Mathematics and Informatics, Azerbaijan University, Jeyhun Hajibeyli Street, AZ Baku, Azerbaijan