| Affiliation: | 1. College of Mathematics and Information Science, Guangxi University, Nanning 530004, PR China;2. Guangxi Colleges and Universities Key Laboratory of Mathematics and Its Applications, PR China;3. School of Mathematics and Computer Sciences, Yunnan Minzu University, Kunming, Yunnan 650504, PR China;4. China Hebei Lang Lang Technology Development Co., Ltd., PR China;1. College of Mathematics and Information Science, Guangxi University, Nanning, 530004, P. R. China;2. School of Mathematics and Statistics, Jiangsu Normal University, Xuzhou 221116, P. R. China |
