Affiliation: | 1. Department of Computer Science and Communication Engineering, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan;2. Department of Computer Science, Sichuan University, 610064 Chengdu, Sichuan, China;1. College of Mechanical Engineering, Chongqing University, Chongqing 400044, China;2. College of Robot Engineering and Mechanical-Electrical Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China;1. Department of Mathematics, University of Pannonia, Veszprem, Hungary;2. Department of Mathematics, University of Haifa, Haifa, Israel |