Institution: | 1.Applied Analysis Research Group, Faculty of Mathematics and Statistics, Ton Duc Thang University, Ho Chi Minh City, Vietnam ;2.Department of Mathematics, University of Transport and Communications, 3 Cau Giay Street, Hanoi, Vietnam ;3.Department of Mathematics Education and the RINS, Gyeongsang National University, Jinju, 52828, Korea ;4.School of Mathematical Sciences, University of Electronic Science and Technology of China, Chengdu, 611731, Sichuan, People’s Republic of China ; |