1. Department of Mathematics, School of Science, Shenyang University of Technology, Shenyang 110870, China
2. Department of Mathematics, Yanbian University, Yanji 133001, China
3. Liaoning Provincial Key Laboratory of Composite Metal Nanomaterials and Magnetic Technology, Shenyang University of Technology, Shenyang 110870, China
4. Division of Foundational Teaching, Guangzhou College of Technology and Business, Guangzhou 510850, China
5. Department of Mathematics, School of Science, Northeastern University, Shenyang 110819, China