Affiliation: | 1.Department of Mathematics, University of Nigeria, Nsukka, Nigeria ;2.Department of Mathematics, Zhejiang Normal University, Jinhua, 321004, People’s Republic of China ;3.Research Center for Interneural Computing, China Medical University Hospital, China Medical University, Taichung, Taiwan ;4.Department of Applied Mathematics, National Sun Yat-sen University, Kaohsiung, Taiwan ; |