1. Department of Mathematics, Luoyang Normal University, Luoyang, 471934, China
2. School of Mathematical Sciences and Shanghai Key Laboratory of PMMP, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
3. Department of Basic Sciences, Faculty of Engineering, Hasan Kalyoncu University TR-27410 Gaziantep, Turkey
4. Department of Mathematics, Faculty of Science and Arts, Gaziantep University, TR-27310 Gaziantep, Turkey