Institution: | 1.Department of Mathematics, Foshan University, Foshan, 528000, People’s Republic of China ;2.Department of Mathematics, University of York, York, YO10 5DD, UK ;3.School of Mathematical Sciences, South China Normal University, Guangzhou, 510631, People’s Republic of China ;4.Guangzhou iFLY ZUNHONG Information Tech Co., Ltd., Guangzhou, 510665, People’s Republic of China ; |