Affiliation: | 1. School of Science and Technology, University of New England, Armidale, NSW 2351, Australia;2. School of Mathematical Sciences, University of Science and Technology of China, Hefei, Anhui, 230026, PR China;1. School of Mathematics and Statistics, Southwest University, Chongqing 400715, PR China;2. School of Mathematics and Information, China West Normal University, Nanchong, 637002, PR China;1. Max Planck Institute for Mathematics, Vivatsgasse 7, 53111 Bonn, Germany;2. Mathematics Department, Technion – I.I.T., Haifa 32000, Israel;1. Department of Mathematical and Systems Engineering, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, 432-8561, Japan;2. Department of Mathematics, Faculty of Science, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto-City, 603-8555, Japan;1. Departamento de Matemática, Universidad Técnica Federico Santa María, 1680 Av. españa Valparaíso, Chile;2. UFRGS, Instituto de Matemática, Av. Bento Goncalves 9500, 91540-000 Porto Alegre-RS, Brazil |