Kondo Kei

コンドウケイ | Kondo Kei

Affiliation and department：
Job title： Professor

Research field (1)： Geometry

Research keywords (5)： Global Riemannian Geometry , Nonsmooth Analysis , Exotic Structures , Minimal Submanifolds via the PDE Aspects , Origami

Research theme for competitive and other funds (6)：

2022 - 2027 Is it possible to mathematically formulate origami for materials with the property of stretching and shrinking?
2018 - 2022 A variational problem on conformality of maps and a variational problem on pullbacks of metrics
2017 - 2022 The application of nonsmooth analysis to the collapsing theory and exotic structure
2016 - 2021 A construction of the thery of homogeneous surfaces in Riemannian symmetric spaces
2015 - 2019 Research on a variational problem related to conformal maps and a variational problem of pullback of metrics

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Papers (17)：

Kei KONDO. Approximations of Lipschitz maps via Ehresmann fibrations and Reeb's sphere theorem for Lipschitz functions. Journal of the Mathematical Society of Japan. 2022. 74. 2. 521-548
Kei Kondo, Yusuke Shinoda. On sufficient conditions to extend Huber's finite connectivity theorem to higher dimensions. TOHOKU MATHEMATICAL JOURNAL. 2021. 73. 3. 463-470
Kei Kondo, Minoru Tanaka. Differentiable sphere theorems whose comparison spaces are standard spheres or exotic ones. Kodai Mathematical Journal. 2020. 43. 2. 349-365
Kei Kondo, Minoru Tanaka. Approximations of Lipschitz maps via immersions and differentiable exotic sphere theorems. NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS. 2017. 155. 219-249
Kei Kondo. GROVE-SHIOHAMA TYPE SPHERE THEOREM IN FINSLER GEOMETRY. OSAKA JOURNAL OF MATHEMATICS. 2015. 52. 4. 1143-1162

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Lectures and oral presentations (52)：

レーブ・ミルナー・ローゼンの球面定理のリプシッツ関数への拡張について
(福岡大学微分幾何研究集会2023(福岡大学七隈キャンパス) 2023)
フィンスラー多様体上の等長変換群がリー群であることの測地線論的別証明
(日本数学会・2023年度年会秋季総合分科会 2023)
Reeb's sphere theorem for Lipschitz functions
(Submanifold Geometry and Lie Group Actions 2022 2023)
On the extension of Reeb-Milnor-Rosen's sphere theorem to Lipschitz functions, Pt.2
(Tsukuba Global Riemannian Geometry 2023)
On the extension of Reeb-Milnor-Rosen's sphere theorem to Lipschitz functions, Pt.1
(Tsukuba Global Riemannian Geometry 2023)

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Works (1)：

Education (5)：

Professional career (2)：

Work history (8)：

2023/04 - 現在 Okayama University
2021/04 - 2023/03 Okayama University Faculty of Natural Science and Technology Professor
2019/09 - 2021/03 Okayama University The Graduate School of Natural Science and Technology Professor
2016/04 - 2019/08 Yamaguchi University Associate Professor
2017/04 - 2017/09 Kyushu University

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Committee career (6)：

2024/04 - 現在 The Mathematical Journal of Okayama University Editor-in-Chief
2022/10 - 現在 The American Mathematical Society A reviewer for Mathematical Reviews
2020/04 - 現在日本数学会幾何学分科会・拡大幹事会の委員
2021/04 - 2022/03 Faculty of Natural Science and Technology, Okayama University the Chairperson of Division of Mathematics and Physics (Doctor's Course)
2021/04 - 2022/03 Department of Mathematics, Faculty of Science, Okayama University the Chairperson of Department of Mathematics

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Awards (2)：

Association Membership(s) (2)：

日本数学会 , 日本折紙学会

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