Affiliation: | 1. Sabancı University, Istanbul, Turkey;2. University of Auckland, Auckland, New Zealand;1. Department of General Education, Kagawa National College of Technology, 551 Takuma, Kagawa, 769-1192, Japan;2. Department of Mathematics, Tokyo Woman’s Christian University, 2-6-1 Zempukuji, Suginami-ku, Tokyo, 167-8585, Japan |