Institution: | 1. School of Mathematics and Statistics, Guangxi Normal University, Guilin, China;2. Guangxi Colleges and Universities Key Laboratory of Complex System Optimization and Big Data Processing, Yulin Normal University, Yulin, China;3. School of Mathematics and Physics, China University of Geosciences, Wuhan, China;4. School of Mathematics and Computational Science, Xiangtan University, Xiangtan China |