@article{oai:ir.kagoshima-u.ac.jp:00007747, author = {柊原, 健明 and KUKIHARA, Kenmei}, journal = {鹿児島大学工学部研究報告, The research reports of the Faculty of Engineering, Kagoshima University}, month = {Sep}, note = {An approximate almost periodicity of ζ function is proposed, which leads that the numbers of values taken by the function are Ο(T) in ltl