| Affiliation: | 1. Utah State University, Department of Mathematics and Statistics, Logan UT 84341, USA;2. Hung Vuong University, Faculty of Natural Sciences, Viet Tri, Phu Tho, Viet Nam;3. Université Bretagne Sud, Laboratoire de Mathématiques de Bretagne Atlantique, UMR CNRS 6205, Campus de Tohannic, BP 573 F-56017 Vannes, France;1. School of Sciences, Harbin Institute of Technology, Shenzhen, 518055, China;2. School of Sciences, Jiangnan University, Wuxi, 214122, China;3. UFR IM2AG, Uuiversité Grenoble Alpes, Saint Martin D''Hères, France;1. FB Mathematik, Katholische Universität Eichstätt-Ingolstadt, 85072 Eichstätt, Germany;2. Mathematical Institute, University of Oxford, OX2 6GG, UK |
