ODA Yoshiaki 小田芳彰

… Alternative Names

小田芳彰オダヨシアキ

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Researcher Number	90325043
Other IDs
Affiliation (Current)	2025: 慶應義塾大学, 理工学部(矢上), 准教授
Affiliation (based on the past Project Information) *help	2021: 慶應義塾大学, 理工学部(矢上), 准教授 2016 – 2019: 慶應義塾大学, 理工学部(矢上), 准教授 2009 – 2016: Keio University, 理工学部, 准教授 2008: 慶應義塾大学, 理工学部, 専任講師 2003 – 2008: Keio University, Science and Technology, Lecturer, 理工学部, 講師 2001 – 2002: 島根大学, 総合理工学部, 助手
Review Section/Research Field	Principal Investigator General mathematics (including Probability theory/Statistical mathematics) / General mathematics (including Probability theory/Statistical mathematics) Except Principal Investigator General mathematics (including Probability theory/Statistical mathematics) / Foundations of mathematics/Applied mathematics / Algebra / General mathematics (including Probability theory/Statistical mathematics) / Fundamental theory of informatics
Keywords	Principal Investigator 組合せ論 / 離散数学 / 巡回セールスマン問題 / 計算量理論 / アルゴリズム / 組合せ最適化 / 整数の分割 / 経路問題 / ニュージーランド / 国際情報交換 … More / 多項式時間アルゴリズム / 車両配送問題 / アメリカ : イギリス / 国際研究者交流 / アルゴリズム論 / 計算幾何学 / 応用数学 / ピラミッド型巡回路 / NP … More Except Principal Investigator グラフ理論 / Rankin-Selberg / cluttered ordering / RAID / Erasure resilient code / pooling experiment / DNA library screening / Combinatorial designs / マッチング拡張性 / 極値問題 / 国際研究者交流 / 国際情報交換 / マッチング / Hadwiger予想 / グラフマイナー / タフネス / 完全マッチング / 禁止部分グラフ / マイナー / 組合せ論 / 1-平面グラフ / 離散数学 / 辺彩色部分グラフ / サイクル / 疎グラフ / Mellin transform / confluent hypergeometric function / zonal polynomial / Eisenstein seeries / Degenerate principal series / Rankin-Selberg L函数 / Koecher-Maass級数 / Maassリフティング / 退化Whittaker模型 / 合流型超幾何函数 / Zuckerman導来函手加群 / 実解析的Eisenstein級数 / 実解析的Siegel保型形式 / 留数形式 / 半整数重さ / 正規化メリン変換 / 実解析的保型形式 / 斉藤・黒川保型形式 / Rankin-Selber / 一般型メリン変換 / Ge enbauer多項式 / メリン変換 / 合流型超幾何積分 / Zonal多項式 / アイゼンシュタイン級数 / 退化主系列表現 / wrappedρ-labelling / Combinatiorial designs / pooling design / Quorum system / wrapped ρ-labelling / grid design / DNA Library screening / アメリカ:台湾 / 台湾 / アメリカ / 森グラフ / 彩色問題 / シータグラフ / 弦付きサイクル / 安定割当 / 安定マッチング / 安定結婚 / ハンガリー / 配属問題 / アルゴリズム / 戦略的頑健性 / 資源配分問題 / 離散凸解析 / 離散構造 / 離散最適化 / 辺の縮約 / 同型判定 / 多重辺 / 既約三角形分割 / データベース / 染色数 / 閉曲面 / 三角形分割 / 全域木 / 閉曲面上への埋め込み / クローフリーグラフ / 禁止マイナー / グラフ Less

Development of Extremal Graph Theory for Sparse Graphs
- Principal Investigator
  
  Ota Katsuhiro
- Project Period (FY)
  2016 – 2019
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Foundations of mathematics/Applied mathematics
- Research Institution
  Keio University
Deep Studies on Allocation Problems with Discrete Structures
- Principal Investigator
  
  Tamura Akihisa
- Project Period (FY)
  2012 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Fundamental theory of informatics
- Research Institution
  Keio University
Integrated research of extremal problems on graph factors, minors and subgraphs
- Principal Investigator
  
  Ota Katsuhiro
- Project Period (FY)
  2012 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Special cases of several routing problems and various relaxations of routesPrincipal Investigator
- Principal Investigator
  
  ODA YOSHIAKI
- Project Period (FY)
  2012 – 2015
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Research on graphs densely embedded on a closed surface
- Principal Investigator
  
  OTA Katsuhiro
- Project Period (FY)
  2011 – 2012
- Research Category
  
  Grant-in-Aid for Challenging Exploratory Research
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Special cases of routing problems and their crossingsPrincipal Investigator
- Principal Investigator
  
  ODA Yoshiaki
- Project Period (FY)
  2009 – 2011
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Research on graphs characterized by forbidden minors
- Principal Investigator
  
  OTA Katsuhiro
- Project Period (FY)
  2008 – 2011
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Applying some polynomially solvable cases of the traveling salesman problem to the vehicle routing problemPrincipal Investigator
- Principal Investigator
  
  ODA Yoshiaki
- Project Period (FY)
  2006 – 2008
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Arithmetic of cohomological automorphic representations of orthogonal groups and theta series for indefinite quadratic forms
- Principal Investigator
  
  MIYAZAKI Takuya
- Project Period (FY)
  2005 – 2007
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Keio University
巡回セールスマン問題の多項式時間で解けるクラスへの計算幾何学からの取り組みPrincipal Investigator
- Principal Investigator
  
  小田芳彰
- Project Period (FY)
  2003 – 2005
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
巡回セールスマン問題と緩和したピラミッド型巡回路についてPrincipal Investigator
- Principal Investigator
  
  小田芳彰
- Project Period (FY)
  2001 – 2002
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Shimane University
Applications of combinatorial designs to information transmission and DNA library screening
- Principal Investigator
  
  JIMBO Masakazu
- Project Period (FY)
  2001 – 2003
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University

All 2018 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 Other

All Journal Article Presentation

[Journal Article] A note on two geometric paths with few crossings for points labeled by integers in the plane2018
- Author(s)
  A. Nakamoto, Y. Oda, M. Watanabe, T. Yamashita
- Journal Title
  
  Discrete Mathematics
  
  Volume: 341 Pages: 1109-1113
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16H03952
[Journal Article] K_6-minors in triangulations on the nonorientable surface of genus 32010
- Author(s)
  R. Mukae, A. Nakamoto, Y. Oda, Y. Suzuki
- Journal Title
  
  Graphs and Combinatorics
  
  Volume: 26 Pages: 559-570
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740082
[Journal Article] 3-trees with few vertices of degree 3 in circuit graphs2009
- Author(s)
  A. Nakamoto, Y. Oda, K. Ota
- Journal Title
  
  Discrete Mathematics 309
  
  Pages: 666-672
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] 3-trees with few vertices of degree 3 in circuit graphs2009
- Author(s)
  Atsuhiro Nakamoto, Yoshiaki Oda, KatsuhiroOta
- Journal Title
  
  Discrete Mathematics 309
  
  Pages: 666-672
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740058
[Journal Article] 3-trees with few vertices of degree 3 in circuit graphs2009
- Author(s)
  A. Nakamoto, Y. Oda and K. Ota
- Journal Title
  
  Discrete Math
  
  Volume: 309 Pages: 666-672
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] 3-trees with few vertices of degree 3 in circuit graphs2009
- Author(s)
  Atsuhiro Nakamoto, Yoshiaki Oda, Katsuhiro Ota
- Journal Title
  
  Discrete Mathematics 309
  
  Pages: 666-672
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740058
[Journal Article] 3-trees with few vertices of degree 3 in circuit graphs2009
- Author(s)
  A. Nakamoto, Y. Oda and K. Ota
- Journal Title
  
  Discrete Mathematics
  
  Volume: 309 Pages: 666-672
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740082
[Journal Article] The number of flips required to obtain non-crossing convex Cycles2008
- Author(s)
  Yoshiaki Oda, Mamoru Watanabe
- Journal Title
  
  Lecture Notes in Computer Science 4535
  
  Pages: 155-165
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740058
[Journal Article] The number of flips required to obtain non-crossing convex cycles2008
- Author(s)
  Yoshiaki Oda, Mamoru Watanabe
- Journal Title
  
  Lecture Notes in Computer Science 4535
  
  Pages: 155-165
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740058
[Journal Article] K6-minors in triangulations on the double torus2007
- Author(s)
  Atsuhiro Nakamoto, Yoshiaki Oda, Katsuhiro Ota
- Journal Title
  
  Congressus Numerantium 188
  
  Pages: 150-160
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740058
[Journal Article] K_6・minors in triangulations on the double torus
- Author(s)
  A. Nakamoto, Y. Oda and K. 0ta
- Journal Title
  
  Congressus Numerantium (掲載決定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740058
[Journal Article] The number of flips required to obtain non・crossing convex cycles
- Author(s)
  Y. Oda and M. Watanabe
- Journal Title
  
  Lecture Notes in Computer Science (掲載決定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740058
[Presentation] 組合せ論とプログラム ― 禁止部分グラフの高速判定アルゴリズム，離散幾何学の２つの問題2018
- Author(s)
  小田　芳彰
- Organizer
  軽井沢グラフと解析研究集会
- Data Source
  KAKENHI-PROJECT-16H03952
[Presentation] 2要素の交換と多重集合のある分割問題について2016
- Author(s)
  小田芳彰，山下登茂紀
- Organizer
  応用数学合同研究集会
- Place of Presentation
  龍谷大学（滋賀県・大津市）
- Year and Date
  2016-12-17
- Data Source
  KAKENHI-PROJECT-16H03952
[Presentation] 円順列と連続k-部分列の和の均等性について2015
- Author(s)
  小田芳彰，中本敦浩，山下登茂紀，渡辺守
- Organizer
  2015年度応用数学合同研究集会
- Place of Presentation
  龍谷大学（滋賀県・大津市）
- Year and Date
  2015-12-19
- Data Source
  KAKENHI-PROJECT-24540140
[Presentation] 円順列の連続するk-部分列の和について2015
- Author(s)
  小田芳彰，中本敦浩，山下登茂紀，渡辺守
- Organizer
  第27回位相幾何学的グラフ理論研究集会
- Place of Presentation
  横浜国立大学（神奈川県・横浜市）
- Year and Date
  2015-11-13
- Data Source
  KAKENHI-PROJECT-24540140
[Presentation] 2目的の巡回セールスマン問題について2014
- Author(s)
  Yoshiaki Oda
- Organizer
  田澤新成先生ご退職記念研究集会
- Place of Presentation
  近畿大学
- Data Source
  KAKENHI-PROJECT-24540140
[Presentation] 均等2分割の一般化とそれに関連する問題2014
- Author(s)
  小田芳彰，中本敦浩，山下登茂紀，渡辺守
- Organizer
  応用数学合同研究集会
- Place of Presentation
  龍谷大学（滋賀県大津市）
- Year and Date
  2014-12-20
- Data Source
  KAKENHI-PROJECT-24540140
[Presentation] Balanced partitions on permutations and their application to a geometric problem2013
- Author(s)
  Yoshiaki Oda, Atsuhiro Nakamoto, Mamoru Watanabe and Tomoki Yamashita
- Organizer
  The 25th Topological Graph Theory
- Place of Presentation
  Yokohama National University
- Data Source
  KAKENHI-PROJECT-24540140
[Presentation] Balanced partitions on permutations and their application to a geometric problem2013
- Author(s)
  Tomoki Yamashita, Atsuhiro Nakamoto, Yoshiaki Oda and Mamoru Watanabe
- Organizer
  日本数学会
- Place of Presentation
  愛媛大学
- Data Source
  KAKENHI-PROJECT-24540140
[Presentation] 反転に関するいくつかの問題2012
- Author(s)
  小田芳彰
- Organizer
  関西グラフ理論研究集会
- Place of Presentation
  加計国際学術交流センター
- Year and Date
  2012-03-07
- Data Source
  KAKENHI-PROJECT-21740082
[Presentation] 反転に関するいくつかの問題2012
- Author(s)
  小田芳彰
- Organizer
  関西グラフ理論研究集会
- Place of Presentation
  加計国際学術交流センタ
- Year and Date
  2012-03-07
- Data Source
  KAKENHI-PROJECT-21740082
[Presentation] 経路問題と計算量-経路問題の多項式時間で解けるクラス2011
- Author(s)
  小田芳彰
- Organizer
  研究集会「離散数理構造とその応用」
- Place of Presentation
  名古屋大学多元数理科学研究科
- Year and Date
  2011-11-19
- Data Source
  KAKENHI-PROJECT-21740082
[Presentation] 経路問題と計算量-経路問題の多項式時間で解けるクラス2011
- Author(s)
  小田芳彰
- Organizer
  離散数理構造とその応用
- Place of Presentation
  名古屋大学多元数理科学研究科
- Year and Date
  2011-11-19
- Data Source
  KAKENHI-PROJECT-21740082
[Presentation] 経路問題と計算量2011
- Author(s)
  小田芳彰
- Organizer
  研究集会「離散数理構造とその応用」
- Place of Presentation
  名古屋大学
- Year and Date
  2011-11-19
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] 経路問題と計算量2011
- Author(s)
  小田芳彰
- Organizer
  研究集会「離散数理構造とその応用」
- Place of Presentation
  名古屋大学(invited)
- Year and Date
  2011-11-19
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] 複数の倉庫がある車両配送問題の多項式時間で解けるクラス2010
- Author(s)
  小田芳彰
- Organizer
  応用数学合同研究集会
- Place of Presentation
  龍谷大学
- Year and Date
  2010-12-18
- Data Source
  KAKENHI-PROJECT-21740082
[Presentation] Special cases of the multi-depot vehicle routing problem2010
- Author(s)
  Yoshiaki Oda
- Organizer
  The 3^<rd> Pacific Workshop on Discrete Mathematics
- Place of Presentation
  Tokai University Pacific Center, Hawaii
- Year and Date
  2010-12-09
- Data Source
  KAKENHI-PROJECT-21740082
[Presentation] Demidenko conditions and the vehicle routing problem2009
- Author(s)
  Yoshiaki Oda
- Organizer
  Fortieth Southeastern International Conference on Combintorics, Graph Theory and Computing
- Place of Presentation
  Florida Atlantic University, Florida, USA
- Year and Date
  2009-03-05
- Data Source
  KAKENHI-PROJECT-18740058
[Presentation] 経路問題と離散数学2009
- Author(s)
  小田芳彰
- Organizer
  日本数学会
- Place of Presentation
  大阪大学
- Year and Date
  2009-09-24
- Data Source
  KAKENHI-PROJECT-21740082
[Presentation] 経路問題と離散数学2009
- Author(s)
  小田芳彰
- Organizer
  日本数学会
- Place of Presentation
  大阪大学(特別講演)
- Year and Date
  2009-09-24
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] Demidenko conditions and the vehicle routing Problem2009
- Author(s)
  小田芳彰
- Organizer
  日本数学会2009年度年会応用数学分科会
- Place of Presentation
  東京大学駒場キャンパス
- Year and Date
  2009-03-27
- Data Source
  KAKENHI-PROJECT-18740058
[Presentation] 経路問題と離散数学2009
- Author(s)
  小田芳彰
- Organizer
  日本数学会秋季総合分科会
- Place of Presentation
  大阪大学
- Year and Date
  2009-09-24
- Data Source
  KAKENHI-PROJECT-21740082
[Presentation] Demidenko conditions and the vehicle routing problem2009
- Author(s)
  小田芳彰
- Organizer
  日本数学会2009年度年会
- Place of Presentation
  東京大学
- Year and Date
  2009-03-27
- Data Source
  KAKENHI-PROJECT-18740058
[Presentation] Demidenko conditions and the vehicle routing problem2009
- Author(s)
  Yoshiaki Oda
- Organizer
  The 40th Southeastern International Conference on Combinatorics, Graph Theory and Computing
- Place of Presentation
  Florida Atlantic University, USA
- Year and Date
  2009-03-05
- Data Source
  KAKENHI-PROJECT-18740058
[Presentation] Polynomial time solvable classes of the vehicle routing problem2008
- Author(s)
  小田芳彰
- Organizer
  応用数学合同研究集会
- Place of Presentation
  龍谷大学
- Year and Date
  2008-12-15
- Data Source
  KAKENHI-PROJECT-18740058
[Presentation] Partial constructions of Voronoi diagrams2007
- Author(s)
  Y. Oda
- Organizer
  32nd Australasian Conference on Combinatorial Mathematics & Combinatorial Computing
- Place of Presentation
  University of Otago,Dunedin, NewZealand
- Year and Date
  2007-12-04
- Data Source
  KAKENHI-PROJECT-18740058
[Presentation] Special cases of the vehicle routing problem2007
- Author(s)
  Yoshiaki Oda
- Organizer
  The 38th Southeastern International Conference on Combinatorics, Graph Theory and Computing
- Place of Presentation
  Florida Atlantic University, USA
- Year and Date
  2007-03-08
- Data Source
  KAKENHI-PROJECT-18740058
[Presentation] Partial constructions of Voronoi diagrams2007
- Author(s)
  Yoshiaki Oda
- Organizer
  The 32nd Australasian Conference on Combinatorial Mathematics and Combinatorial Computing
- Place of Presentation
  University of Otago, New Zealand
- Year and Date
  2007-12-04
- Data Source
  KAKENHI-PROJECT-18740058
[Presentation] The number of flips to obtain non-crossing geometric cycles2007
- Author(s)
  Y. Oda and M. Watanabe
- Organizer
  Kyoto International Conference on Computational Geometry and Graph Theory 2007
- Place of Presentation
  Kyoto University,Kyoto, Japan
- Year and Date
  2007-06-12
- Data Source
  KAKENHI-PROJECT-18740058
[Presentation] 車両配送問題の多項式時間で解けるクラス2006
- Author(s)
  小田芳彰
- Organizer
  応用数学合同研究集会
- Place of Presentation
  龍谷大学
- Year and Date
  2006-12-22
- Data Source
  KAKENHI-PROJECT-18740058
[Presentation] 車両配送問題の多項式時間で解けるクラスとその計算量
- Author(s)
  小田芳彰
- Organizer
  日本応用数理学会
- Place of Presentation
  稚内全日空ホテル
- Data Source
  KAKENHI-PROJECT-24540140

1. OTA Katsuhiro (40213722)

# of Collaborated Projects: 6 results

# of Collaborated Products: 2 results
2. TAMURA Akihisa (50217189)

# of Collaborated Projects: 4 results

# of Collaborated Products: 0 results
3. FUJISAWA Jun (00516099)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
4. ISHII Ippei (90051929)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
5. YAMASHITA Tomoki (10410458)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
6. 榎本彦衛 (00011669)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
7. NAKAMOTO Atsuhiro (20314445)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
8. JIMBO Masakazu (50103049)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. FUJI-HARA Ryoh (30165443)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. MISHIMA Miwako (00283284)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. KURIKI Shinji (00167389)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
12. MIYAZAKI Takuya (10301409)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
13. TANAKA Takaaki (60306850)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. HACHIMORI Yoshitaka (50433743)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. 南美穂子 (70277268)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
16. 深谷太香子 (20365464)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. Fleiner Tamas

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
18. OZEKI Kenta

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
19. TSUCHIYA Shoichi

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
20. NOGUCHI Kenta

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
21. SAKUMA Tadashi

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
22. WATANABE MAMORU

# of Collaborated Projects: 1 results

# of Collaborated Products: 5 results

ODA Yoshiaki 小田 芳彰

小田 芳彰 オダ ヨシアキ

Research Projects

Research Products

Co-Researchers

Development of Extremal Graph Theory for Sparse Graphs

Principal Investigator

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Deep Studies on Allocation Problems with Discrete Structures

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Integrated research of extremal problems on graph factors, minors and subgraphs

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Special cases of several routing problems and various relaxations of routesPrincipal Investigator

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Research on graphs densely embedded on a closed surface

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Special cases of routing problems and their crossingsPrincipal Investigator

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Research on graphs characterized by forbidden minors

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Applying some polynomially solvable cases of the traveling salesman problem to the vehicle routing problemPrincipal Investigator

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Arithmetic of cohomological automorphic representations of orthogonal groups and theta series for indefinite quadratic forms

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巡回セールスマン問題の多項式時間で解けるクラスへの計算幾何学からの取り組みPrincipal Investigator

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巡回セールスマン問題と緩和したピラミッド型巡回路についてPrincipal Investigator

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Applications of combinatorial designs to information transmission and DNA library screening

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[Journal Article] A note on two geometric paths with few crossings for points labeled by integers in the plane2018

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ODA Yoshiaki 小田芳彰

小田芳彰オダヨシアキ