| Affiliation: | 1. Department of Mathematics and Computer Science, University of Lethbridge, Lethbridge, Alberta, T1K 3M4, Canada;2. Department of Mathematics, National Defense Academy of Japan, Yokosuka, Kanagawa, 239-8686, Japan;1. Department of Mathematics, Faculty of Mathematics and Physics, Charles University, Sokolovská 83, 186 75 Prague 8, Czech Republic;2. Institut de Mathématiques de Toulon, campus La Garde, 83041 Toulon, France;1. Dipartimento di Matematica e Informatica, Università degli Studi di Perugia, Italy;2. Dipartimento di Matematica, Informatica ed Economia, Università degli Studi della Basilicata, Italy;1. College of Liberal Arts and Sciences, National University of Defense Technology, Changsha, China;2. School of Mathematics and Statistics, Hunan University of Technology and Business, Changsha, China;3. State Key Laboratory of Cryptology, Beijing, 100878, China |
