| Affiliation: | 1. Quy Nhon University, Department of Mathematics, 170 An Duong Vuong Street, Quy Nhon City, Binh Dinh Province, Viet Nam;2. HCMC University of Technology, Department of Computer Science, 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Viet Nam;3. Johann Bernoulli Institute, University of Groningen, P.O. Box 407, 9700 AG Groningen, The Netherlands;1. School of Economics, Sogang University, Baekbeom-ro 35, Mapo-gu, Seoul, 04107, South Korea;2. Faculty of Business and Economics, University of Lausanne, 1015 Lausanne, Switzerland;1. School of Mathematics, Shandong University, Jinan, Shandong 250100, People''s Republic of China;2. Chern Institute of Mathematics and LPMC, Nankai University, Tianjin 300071, People''s Republic of China |
