梅津健一郎

ウメヅケンイチロウ | UMEZU Kenichiro

所属機関・部署：
職名：教授
その他の所属（所属・部署名・職名） (2件)：

ホームページURL (1件)： http://umeken.sakura.ne.jp/kenwiki/index.php

研究分野 (1件)：数理解析学

研究キーワード (1件)：非線形楕円型境界値問題,固有値問題,正値解,分岐解析,変分法,写像度,sub- and supersolutions, 人口動態論.

競争的資金等の研究課題 (12件)：

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論文 (48件)：

Kenichiro Umezu. Logistic elliptic equation with a nonlinear boundary condition arising from coastal fishery harvesting II. Journal of Mathematical Analysis and Applications. 2024. 534. 1. 128134
Kenichiro Umezu. Logistic elliptic equation with a nonlinear boundary condition arising from coastal fishery harvesting. Nonlinear Analysis: Real World Applications. 2023. 70. 103788
Kenichiro Umezu. Uniqueness of a positive solution for the Laplace equation with indefinite superlinear boundary condition. Journal of Differential Equations. 2023. 350. 124-151
Uriel Kaufmann, Humberto Ramos Quoirin, Kenichiro Umezu. Nonnegative solutions of an indefinite sublinear Robin problem II: local and global exactness results. Israel Journal of Mathematics. 2022. 247. 661-696
Uriel Kaufmann, Humberto Ramos Quoirin, Kenichiro Umezu. Uniqueness and positivity issues in a quasilinear indefinite problem. Calculus of Variations and Partial Differential Equations. 2021. 60. article number 187

MISC (3件)：

Uriel Kaufmann, Humberto Ramos Quoirin, Kenichiro Umezu. Past and recent contributions to indefinite sublinear elliptic problems. Rendiconti dell'Istituto di Matematica dell'Università di Trieste. 2020. 52. 1. 217-241
Humberto Ramos Quoirin, Kenichiro Umezu. An indefinite superlinear elliptic equation with a nonlinear boundary condition of sublinear type. 京都大学数理解析研究所講究録. 2016. 2006. 2006. 68-88
Kenichiro Umezu. Semilinear elliptic boundary value problems in chemical reactor theory (Japanese). 京都大学数理解析研究所講究録. 1998. 1025. 99-117

講演・口頭発表等 (77件)：

Positive solutions for logistic type elliptic equation with a non Lipschitz boundary condition arising in coastal fishery harvesting
(Equadiff2024 in Karlstad 2024)
Positive solutions for some sublinear Robin problem with an indefinite weight
(茨城大学金曜セミナー 2023)
An exact multiplicity result for some sublinear Robin problem with an indefinite weight
(The 13th AIMS Conference on Dynamical Systems, Differential Equations and Applications in Wilmington NC 2023)
Logistic elliptic equations with the nonlinear boundary condition arising in coast fishery harvesting
(東北大学応用数理解析セミナー 2022)
Uniqueness of a positive solution for the Laplace equation with indefinite superlinear boundary conditions: near a critical case
(南大阪応用数学セミナー 2021)

学歴 (2件)：

学位 (1件)：

経歴 (8件)：

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受賞 (1件)：

2003/08 - The International Society for Analysis, its Applications and Computation The ISAAC Award for Young Scientists

所属学会 (2件)：

日本応用数理学会 , 日本数学会

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梅津 健一郎