NISHIMURA TAKASHI 西村尚史

… Alternative Names

西村尚史ニシムラタカシ

NISHIMURA Takashi 西村尚史

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Researcher Number	80189307
Other IDs	https://orcid.org/0000-0001-6855-9335
Affiliation (Current)	2025: 横浜国立大学, 大学院環境情報研究院, 名誉教授
Affiliation (based on the past Project Information) *help	2023: 横浜国立大学, 大学院環境情報研究院, 非常勤教員 2017 – 2019: 横浜国立大学, 大学院環境情報研究院, 教授 2014 – 2015: 横浜国立大学, 環境情報研究科(研究院), 教授 2002 – 2003: 横浜国立大学, 教育人間科学部, 助教授 1997 – 1999: 横浜国立大学, 教育人間科学部, 助教授 1993 – 1995: 横浜国立大学, 教育学部, 助教授 1989 – 1990: 横浜国立大学, 教育学部, 助手
Review Section/Research Field	Principal Investigator Basic Section 11020:Geometry-related / Geometry / Geometry / Foundations of mathematics/Applied mathematics Except Principal Investigator Algebra / General mathematics (including Probability theory/Statistical mathematics) / Geometry / 解析学
Keywords	Principal Investigator フロンタル / 可微分写像の特異点論 / convex integrand / ウルフ図形 / 超平面族 / 超曲面族 / frontal / Gauss mapping / creative condition / envelope … More / ガウス写像 / 創造的条件 / 包絡超曲面 / 安定写像 / Convex integrand / Lowerable vector field / 一般化された距離二乗写像 / ヤコビアン二乗関数芽 / 球面双対変換 / フロンタル． / anti-orthotomic, / orthotomic, / Kato's chaos, / ウルフ図形， / 球面ウルフ図形， / isometry, / 球面双対変換, / 可微分写像 / 特異点 / 持ち上げ可能ベクトル場 / 距離二乗写像 / France : Germany / International Research / Mather Theory / Recognition Problem / Singularity of Differentiable Mapping / ドイツ / 可微分写像の特異点 / フランス:ドイツ / 国際研究者交流 / マザー理論 / 認識問題 / 双対ウルフ図形 / ペダル / 視覚理論 / 結晶理論 / 特異点論 / 安定関数 / 等幅 / 球面凸体 / 狭義凸 / 双対 convex integrand / 安定 convex integrand / 自己双対ウルフ図形 / 球面極変換 / no-silhouette … More Except Principal Investigator 次数付き環 / ゴレンスタイン環 / 特異点 / ヒルベルト関数 / コーエン・マコーレー加群 / ネーター局所環 / Kervaire類 / Steenrod algebra / Kervaire class / characteristic class / surgery / transformation group / Kervaire不変量 / 手術理論 / Steenrod代数 / 特性類 / 手術 / 変換群 / knot / graph / metrizability / SIGMA-product / sequential fan / Ramsey's theorem / 距離化定理 / 位相空間論 / M_-3空間 / 正規 / 結び目 / グラフ / 距離化可能 / シグマ積 / 点列ファン / ラムゼイ / 種数 / 楕円的特異点 / 有理的特異点 / リース環 / ヒルベルト級数 / コーエン・マコーレー環 / 強混合型の確率変数 / リ-マン多様体の極点 / 三角形分割の生成定理 / 可微分レトラクト / 可微分写像芽の特異点 / Blow analytic写像 / 可微分写像芽 / 非線形Voltera型微分方程式 / 距離化可能性 / Arhangel'skiiの問題 / 情報容量の表現 / 退化したU-統計量 / 多重ウィナ-積分 / 弱従属確率変数列 Less

Study on envelopesPrincipal Investigator
- Principal Investigator
  
  西村尚史
- Project Period (FY)
  2023 – 2026
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11020:Geometry-related
- Research Institution
  Yokohama National University
New Development of Singularity TheoryPrincipal Investigator
- Principal Investigator
  
  NISHIMURA Takashi
- Project Period (FY)
  2017 – 2019
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Yokohama National University
Geometric integration of crystal theory and vision theory by singularity theoryPrincipal Investigator
- Principal Investigator
  
  NISHIMURA Takashi
- Project Period (FY)
  2014 – 2015
- Research Category
  
  Grant-in-Aid for Challenging Exploratory Research
- Research Field
  
  Foundations of mathematics/Applied mathematics
- Research Institution
  Yokohama National University
Recognition Problem in Singularity Theory of Differentiable MappingsPrincipal Investigator
- Principal Investigator
  
  NISHIMURA Takashi
- Project Period (FY)
  2002 – 2003
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Yokohama National University
Manifolds with Actions of Cyclic Groups
- Principal Investigator
  
  KITADA Yasuhiko
- Project Period (FY)
  1998 – 1999
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Yokohama National University
Applications of Ramsey's theorem
- Principal Investigator
  
  TAMANO Kenichi
- Project Period (FY)
  1997 – 1998
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Yokohama National University
高所環上のMCM加群とヒルベルト級数
- Principal Investigator
  
  大石彰
- Project Period (FY)
  1995
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Yokohama National University
局所環上のMCM加群とヒルベルト級数
- Principal Investigator
  
  大石彰
- Project Period (FY)
  1994
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Yokohama National University
局所環上のMCM加群とヒルベルト級数
- Principal Investigator
  
  大石彰
- Project Period (FY)
  1993
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Yokohama National University
可微分写像と特異点理論の研究
- Principal Investigator
  
  吉永悦男
- Project Period (FY)
  1990
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  解析学
- Research Institution
  Yokohama National University
極限定理とその周辺
- Principal Investigator
  
  吉原健一
- Project Period (FY)
  1989
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Yokohama National University

All 2024 2023 2020 2019 2018 2017 2016 2015 2014 2002

All Journal Article Presentation Book

[Book] 特異点と分岐2002
- Author(s)
  西村尚史
- Total Pages
  408
- Publisher
  共立出版
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14540069
[Book] Singularities and Bifurcations (in Japanese)2002
- Author(s)
  Nishimura Takashi
- Publisher
  Kyouritsu Shuppan
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14540069
[Journal Article] On envelopes created by circle families in the plane2024
- Author(s)
  Takashi Nishimura
- Journal Title
  
  MI Lecture Note
  
  Volume: 95 Pages: 323-331
- Open Access
- Data Source
  KAKENHI-PROJECT-23K03109
[Journal Article] Envelopes created by circle families in the plane2024
- Author(s)
  Yongqiao Wang and Takashi Nishimura
- Journal Title
  
  Journal of Geometry
  
  Volume: 115:7 Issue: 1 Pages: 1-20
- DOI
  10.1007/s00022-023-00708-z
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K03109
[Journal Article] Anti-orthotomics of frontals and their applications2020
- Author(s)
  Stanislaw Janeczko and Takashi Nishimura
- Journal Title
  
  Journal of Mathematical Analysis and Applications
  
  Volume: 487 Issue: 2 Pages: 124019-124019
- DOI
  10.1016/j.jmaa.2020.124019
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05245
[Journal Article] Kato's chaos created by quadratic mappings associated with spherical orthotomic curves2020
- Author(s)
  Takashi Nishimura
- Journal Title
  
  Journal of Singularities
  
  Volume: 21 Pages: 205-211
- DOI
  10.5427/jsing.2020.21l
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05245
[Journal Article] The spherical dual transform is an isometry for spherical Wulff shapes2019
- Author(s)
  Huhe Han and Takashi Nishimura
- Journal Title
  
  Studia Mathematica
  
  Volume: 245 Issue: 3 Pages: 201-211
- DOI
  10.4064/sm8406-9-2016
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05245
[Journal Article] Jacobian-squared function-germs2018
- Author(s)
  Takashi Nishimura
- Journal Title
  
  Pure and Applied Mathematics Quarterly
  
  Volume: 13 Issue: 4 Pages: 711-728
- DOI
  10.4310/pamq.2017.v13.n4.a5
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05245
[Journal Article] Preservation of immersed or injective properties by composing generic generalized distance-squared mappings2018
- Author(s)
  Shunsuke Ichiki and Takashi Nishimura
- Journal Title
  
  Springer Proceedings in Mathematics & Statistids
  
  Volume: 222 Pages: 537-547
- DOI
  10.1007/978-3-319-73639-6_18
- ISBN
  9783319736389, 9783319736396
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05245
[Journal Article] Spherical method for studying Wulff shapes and related topics2018
- Author(s)
  Huhe Han and Takashi Nishimura
- Journal Title
  
  Advanced Studies in Pure Mathematics
  
  Volume: 78 Pages: 1-53
- DOI
  10.2969/aspm/07810001
- NAID
  120006539324
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05245
[Journal Article] 可微分 convex integrand とその dual の同時安定性について2018
- Author(s)
  西村　尚史
- Journal Title
  
  RIMS kokyuroku
  
  Volume: 2085 Pages: 15-19
- Open Access
- Data Source
  KAKENHI-PROJECT-17K05245
[Journal Article] Lowerable vector fields for a finitely L-determined multigerm2018
- Author(s)
  Yusuke Mizota and Takashi Nishimura
- Journal Title
  
  Hokkaido Mathematical Journal
  
  Volume: 47 Issue: 1 Pages: 17-23
- DOI
  10.14492/hokmj/1520928058
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05245
[Journal Article] Strictly convex Wulff shapes and C^1 convex integrands2017
- Author(s)
  Huhe Han and Takashi Nishimura
- Journal Title
  
  Proceedings of the American Mathematical Society
  
  Volume: 145 Issue: 9 Pages: 3997-4008
- DOI
  10.1090/proc/13510
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05245
[Journal Article] STABILITY OF C∞ CONVEX INTEGRANDS2017
- Author(s)
 Erica Boizan Batista, Huhe Han and Takashi Nishimura
- Journal Title
 
 Kyushu Journal of Mathematics
 
 Volume: 71 Issue: 1 Pages: 187-196
- DOI
 10.2206/kyushujm.71.187
- NAID
 130005666252
- ISSN
 1340-6116, 1883-2032
- Language
 English
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
 KAKENHI-PROJECT-17K05245
[Journal Article] Wulff shapes and their duals2017
- Author(s)
  Huhe Han and Takashi Nishimura
- Journal Title
  
  RIMS Kokyuroku
  
  Volume: 2049 Pages: 39-44
- Open Access
- Data Source
  KAKENHI-PROJECT-17K05245
[Journal Article] Self-dual Wulff shapes and spherical convex bodies of constant width π/22017
- Author(s)
  Huhe Han and Takashi Nishimura
- Journal Title
  
  Journal of the Mathematical Society of Japan
  
  Volume: 69 Issue: 4 Pages: 1475-1484
- DOI
  10.2969/jmsj/06941475
- NAID
  130006887107
- ISSN
  0025-5645, 1881-1167, 1881-2333
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05245
[Journal Article] Aperture of Singularities2015
- Author(s)
  Daisuke Kagatsume and Takashi Nishimura
- Journal Title
  
  Journal of Singularities
  
  Volume: 12 Pages: 80-91
- DOI
  10.5427/jsing.2015.12e
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-26610035
[Presentation] On envelopes created by straight line families in the plane2024
- Author(s)
  Takashi Nishimura
- Organizer
  Singularity days at ICMC, University of Sao Paulo at Sao Carlos (Brazil)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K03109
[Presentation] 平面内の円族が創造する包絡線について（Yongqiao Wang 氏との共同研究）2023
- Author(s)
  西村尚史
- Organizer
  研究集会【特異点論及びその周辺分野の深化と異分野への応用】
- Data Source
  KAKENHI-PROJECT-23K03109
[Presentation] Problems related to creative conditions on envelopes2023
- Author(s)
  西村尚史
- Organizer
  RIMS 共同研究(公開型) 研究集会「特異点論の展開」
- Data Source
  KAKENHI-PROJECT-23K03109
[Presentation] On envelopes created by straight line families in the plane2023
- Author(s)
  Takashi Nishimura
- Organizer
  WORKSHOP on Analytic and Algebraic Singularities 2023, Warsaw University of Technology (Poland)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K03109
[Presentation] On envelopes created by circle families in the plane (a joint work with Yongqiao Wang)2023
- Author(s)
  Takashi Nishimura
- Organizer
  WORKSHOP on Mathematics for Industry 2023, Warsaw University of Technology (Poland)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K03109
[Presentation] Jacobian-squared function-germs2019
- Author(s)
  Takashi Nishimura
- Organizer
  西北農林科技大学特別学術報告
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05245
[Presentation] Anti-Orthotomics of Frontals2019
- Author(s)
  Takashi Nishimura
- Organizer
  トポロジープロジェクト研究集会【特異点論による空間研究】
- Data Source
  KAKENHI-PROJECT-17K05245
[Presentation] Anti-Orthotomics of Frontals and their Applications2019
- Author(s)
  Takashi Nishimura
- Organizer
  6th International Workshop on Singularities in Generic Geometry and its Applications, Valencia University
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05245
[Presentation] Jacobian-squared function-germs2019
- Author(s)
  Takashi Nishimura
- Organizer
  Special Session on Real and Complex Singularities Spring Central and Western Joint Sectional Meeting, American Mathematical Society
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05245
[Presentation] Anti-Orthotomics of Frontals and their Applications2019
- Author(s)
  Takashi Nishimura
- Organizer
  SingularityTheory Group Seminar at Sao Paulo University
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05245
[Presentation] 2.Limit of the Hausdorff distance for one-parameter families of some Wulff shapes2018
- Author(s)
  Takashi Nishimura
- Organizer
  RIMS共同研究（公開型）【可微分写像の特異点論を用いたトポロジー・微分幾何学の研究】
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05245
[Presentation] Projections of S^n2018
- Author(s)
  西村　尚史
- Organizer
  研究集会【微分幾何学・微分式系・特異点論の応用】
- Data Source
  KAKENHI-PROJECT-17K05245
[Presentation] Self-dual Wulff shapes and spherical convex bodies of constant width π/22017
- Author(s)
  Takashi Nishimura
- Organizer
  Banach Center Conference (Bedrewo, Poland)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05245
[Presentation] Simultaneous stability of C^∞ convex integrands and their duals2017
- Author(s)
  Takashi Nishimura
- Organizer
  RIMS研究集会
- Data Source
  KAKENHI-PROJECT-17K05245
[Presentation] Stability of C^∞ convex integrands2017
- Author(s)
  Erica Boizan Batista, Huhe Han and Takashi Nishimura
- Organizer
  日本数学会秋季総合分科会
- Data Source
  KAKENHI-PROJECT-17K05245
[Presentation] Strictly convex Wulff shapes and C^1 convex integrands2016
- Author(s)
  韓　呼和、西村尚史
- Organizer
  日本数学会年会
- Place of Presentation
  筑波大学
- Year and Date
  2016-03-17
- Data Source
  KAKENHI-PROJECT-26610035
[Presentation] The spherical dual transform is an isometry for spherical Wulff shapes2015
- Author(s)
  韓　呼和、西村尚史
- Organizer
  日本数学会秋季総合分科会
- Place of Presentation
  京都産業大学
- Year and Date
  2015-09-15
- Data Source
  KAKENHI-PROJECT-26610035
[Presentation] Strictly convex Wulff shapes and C^1 convex integrands2015
- Author(s)
  Takashi Nishimura
- Organizer
  Geometric Singularity Theory
- Place of Presentation
  バナッハセンター（ポーランド）
- Year and Date
  2015-09-07
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26610035
[Presentation] Introduction to topological study of Wulff shapes2014
- Author(s)
  Takashi Nishimura
- Organizer
  Banach Center Conferences, CAS Workshop - Analytic and algebraic singularities
- Place of Presentation
  バナッハセンター（ポーランド、ワルシャワ）
- Year and Date
  2014-11-03
- Invited
- Data Source
  KAKENHI-PROJECT-26610035
[Presentation] Aperture of plane curves2014
- Author(s)
  Takashi Nishimura
- Organizer
  Workshop on Singularities, Geometry, Topology and Related Topics
- Place of Presentation
  東北師範大学（中国、長春）
- Year and Date
  2014-09-03
- Invited
- Data Source
  KAKENHI-PROJECT-26610035
[Presentation] Aperture of plane curves2014
- Author(s)
  Takashi Nishimura
- Organizer
  Banach Center Conferences, CAS Workshop - Analytic and algebraic singularities
- Place of Presentation
  バナッハセンター（ポーランド、ワルシャワ）
- Year and Date
  2014-11-03
- Invited
- Data Source
  KAKENHI-PROJECT-26610035

1. NEGAMI Seiya (40164652)

# of Collaborated Projects: 4 results

# of Collaborated Products: 0 results
2. 前田正男 (00016164)

# of Collaborated Projects: 4 results

# of Collaborated Products: 0 results
3. HIRANO Norimichi (80134815)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
4. TAMANO Kenichi (90171892)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
5. TERADA Toshiji (80126383)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
6. 大石彰 (60112166)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
7. 秋葉繁夫 (80017954)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
8. KITADA Yasuhiko (70016145)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
9. 吉原健一 (00017766)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
10. 吉永悦男 (70015949)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
11. HONDA Atsufumi (90708611)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
12. NAGURA Maki (40251772)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
13. 高野清治 (90018060)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. 馬場裕 (10175549)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. 野間淳 (90262401)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
16. 原下秀士 (70396852)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. HAN Huhe

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results

NISHIMURA TAKASHI 西村 尚史

西村 尚史 ニシムラ タカシ

NISHIMURA Takashi 西村 尚史

Research Projects

Research Products

Co-Researchers

Study on envelopesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

New Development of Singularity TheoryPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Geometric integration of crystal theory and vision theory by singularity theoryPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Recognition Problem in Singularity Theory of Differentiable MappingsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Manifolds with Actions of Cyclic Groups

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Applications of Ramsey's theorem

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

高所環上のMCM加群とヒルベルト級数

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

局所環上のMCM加群とヒルベルト級数

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

局所環上のMCM加群とヒルベルト級数

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

可微分写像と特異点理論の研究

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

極限定理とその周辺

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Book] 特異点と分岐2002

Author(s)

Total Pages

Publisher

Description

Data Source

[Book] Singularities and Bifurcations (in Japanese)2002

Author(s)

NISHIMURA TAKASHI 西村尚史

西村尚史ニシムラタカシ

NISHIMURA Takashi 西村尚史