Rchr
J-GLOBAL ID：200901075102952543
Update date: Oct. 31, 2024
Okuma Tomohiro
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
- 2008 - 2011 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
- 2007 - 2010 Global Theory of Singularities of Differentiable Maps and its Applications
- 2006 - 2008 2次元特異点の普遍アーベル被覆について
- 2004 - 2006 2次元特異点の幾何種数と位相不変量の関係について
- 2004 - 2005 The research of 2-dimensional complex singularities associated to degenerations of closed Riemann surfaces
- 2004 - 2005 Filtered blowing-up of local rings and algebraic geometric classification of singularities
- 2002 - 2003 On Pencil genus for normal surface singularities (II)
- 1999 - 2001 2次元正規特異点の多重種数について
- 2000 - 2001 On pencil genus of 2-dimensional singularities
- 1998 - 1999 Research of Quasi-Kodaira singularities
Show all
Papers (31)：
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Tomohiro Okuma, Kei-ichi Watanabe, Ken-ichi Yoshida. Gorensteinness for normal tangent cones of elliptic ideals. Journal of Pure and Applied Algebra. 2025. 229. 1
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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
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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
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Okuma Tomohiro. WEIGHTED HOMOGENEOUS SURFACE SINGULARITIES HOMEOMORPHIC TO BRIESKORN COMPLETE INTERSECTIONS. JOURNAL OF SINGULARITIES. 2021. 23. 170-193
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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
ｍore...
MISC (1)：
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Tomohiro Okuma. Recent topics on complex surface singularities with a focus on splice quotient singularities. Sugaku. 2015. 67. 4. 373-393
Books (1)：
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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
