Okuma Tomohiro

Affiliation and department：
Job title： Professor

Research field (1)： Geometry

Research keywords (6)： normal reduction number , maximal ideal cycle , multiplicity , elliptic singularity , geometric genus , complex surface singularity

Research theme for competitive and other funds (15)：

2021 - 2026 複素2次元特異点の解析的不変量と構造に関する研究
2017 - 2021 複素2次元特異点の位相型と解析的不変量の研究
2014 - 2017 有理ホモロジー球面をリンクにもつ複素2次元特異点の研究
2010 - 2015 New development of geometric complex analysis
2011 - 2014 リンクが有理ホモロジー球面であるような複素2次元特異点の研究

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Papers (30)：

TOMOHIRO OKUMA, MARIA EVELINA ROSSI, KEI-ICHI WATANABE, KEN-ICHI YOSHIDA. NORMAL HILBERT COEFFICIENTS AND ELLIPTIC IDEALS IN NORMAL TWO-DIMENSIONAL SINGULARITIES. Nagoya Mathematical Journal. 2022. 248. 779-800
Okuma Tomohiro, Watanabe Kei-ichi, Yoshida Ken-ichi. THE NORMAL REDUCTION NUMBER OF TWO-DIMENSIONAL CONE-LIKE SINGULARITIES. PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY. 2021. 149. 11. 4569-4581
Okuma Tomohiro. WEIGHTED HOMOGENEOUS SURFACE SINGULARITIES HOMEOMORPHIC TO BRIESKORN COMPLETE INTERSECTIONS. JOURNAL OF SINGULARITIES. 2021. 23. 170-193
Tomohiro Okuma. Normal reduction numbers of normal surface singularities. Singularities and Their Interaction with Geometry and Low Dimensional Topology. Trends in Mathematics. 2021. 159-179
T. Okuma, Kei-ichi Watanabe, Ken-ichi Yoshida. Normal Reduction Numbers for Normal Surface Singularities with Application to Elliptic Singularities of Brieskorn Type. Acta Mathematica Vietnamica. 2019. 44. 1. 87-100

ｍore...

MISC (1)：

Tomohiro Okuma. Recent topics on complex surface singularities with a focus on splice quotient singularities. Sugaku. 2015. 67. 4. 373-393

Books (1)：

Plurigenera of surface singularities
Nova Science Publishers Inc. 2000 ISBN:1560728027

Education (2)：

- 1997 University of Tsukuba Graduate School, Division of Mathematics
- 1992 University of the Ryukyus Faculty of Science Department of Mathematics

Work history (5)：

2012/10 - 現在 Yamagata University Faculty of Science Professor
2007/04 - 2012/09 Yamagata University Faculty of Education, Art and Science Associate Professor
2005/10 - 2007/03 Yamagata University Faculty of Education, Art and Science Associate Professor (as old post name)
2001/04 - 2005/09 Gunma National College of Technology
1997/04 - 2001/03 群馬工業高等専門学校講師

Committee career (4)：

2021 - 2022 日本数学会函数論分科会委員
2020 - 2020 日本数学会全国区代議員(函数論分科会評議員)
2019 - 2019 日本数学会全国区代議員(函数論分科会連絡責任評議員)
2017 - 2017 日本数学会日本数学会2017年度秋季総合分科会実行委員長

Association Membership(s) (2)：

The Mathematical Society of Japan , American Mathematical Society

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