Research field (2)：
Basic analysis
, Mathematical analysis
Research keywords (5)：
Differential Equations
, Difference Equations
, Asymptotic Behavior
, Oscillation Theory
, Singular Solutions
Research theme for competitive and other funds (2)：
2022 - 2026 p(t)ラプラシアンを持つ微分方程式に対する基礎理論と解の漸近挙動
2017 - 2019 Asymptotic behavior of solutions for differential equations with phi-Laplacian
Papers (16)：
Kōdai Fujimoto, Pavel Řehák. Regularly varying solutions of subhomogeneous differential equations with p(t)-Laplacian. Nonlinear Differential Equations and Applications NoDEA. 2026. 33. 1
Kodai Fujimoto, Kazuki Ishibashi, Masakazu Onitsuka. Leighton-Wintner-type oscillation theorem for the discrete p(k)-Laplacian. Appl. Math. Lett. 2025. 163. 109465-109465
Kōdai Fujimoto, Petr Hasil, Michal Veselý. Riccati Transformation and Non-Oscillation Criterion for Half-Linear Difference Equations. Bulletin of the Malaysian Mathematical Sciences Society. 2024
Kōdai Fujimoto, Masakazu Onitsuka. Leighton-Wintner type oscillation criteria for second-order differential equations with p ( t ) -Laplacian. Electronic Journal of Qualitative Theory of Differential Equations. 2024
Existence and nonexistence of limit cycles for Lienard-type equations with mean curvature operator (Qualitative theory of ordinary differential equations in real domains). 2016. 1993. 37-54
Education (3)：
2015 - 2017 Osaka Prefecture University Graduate School of Engineering, Doctoral Course Division of Electronics, Mathematics and Physics
2013 - 2015 Osaka Prefecture University Graduate School of Engineering, Master Course Division of Electronics, Mathematics and Physics
2009 - 2013 Osaka Prefecture University School of Engineering Department of Mathematical Sciences
Professional career (1)：
Ph.D. in Engineering (Osaka Prefecture University)
Work history (6)：
2023/04 - 現在 Shimane University Academic Assembly Institute of Science and Engineering Lecturer
2022/04 - 2023/03 Osaka Metropolitan University Faculty of Liberal Arts, Sciences and Global Education
2020/09 - 2022/03 Osaka Prefecture University Faculty of Liberal Arts and Sciences
2020/03 - 2020/08 Osaka Prefecture University Graduate School of Science
2019/03 - 2020/02 Masaryk University Faculty of Science Specialist
2017/04 - 2019/02 Osaka Prefecture University Research Fellow of Japan Society for the Promotion of Science
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Association Membership(s) (2)：
European Mathematical Society
, The Mathematical Society of Japan
