Affiliation: | 1. School of Mathematics and Statistics, Shandong University, Weihai 264209, PR China;2. School of Science, Beijing University of Chemical Technology, Beijing 100029, PR China;3. China Economics and Management Academy, Central University of Finance and Economics, Beijing 100081, PR China;4. School of Mathematical Sciences, Xiamen University, Xiamen 361005, PR China;1. Beijing Computational Science Research Center, Beijing 100193, PR China;2. Department of Mathematics, Capital Normal University, Beijing 100048, PR China;3. College of Mathematics and Statistic, Chongqing University, Chongqing 400044, PR China;4. School of Mathematics and Statistics, Northeast Normal University, Changchun, 130024, PR China;1. Department of Mathematics, University of Rijeka, Radmile Matejčić 2, Rijeka, 51000 Rijeka, Croatia;2. Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia;1. School of Mathematics and Computer Science, Huanggang Normal University, Huanggang, 438000, China;2. School of Mathematics and Statistics, Central China Normal University, Wuhan, Hubei Provence, 430079, China |