TOYONAGA KENJI 豊永憲治

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Toyonaga Kenji 豊永憲治

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Researcher Number	80390532
Other IDs
Affiliation (Current)	2025: 鹿児島国際大学, 経済学部, 教授 2025: 北九州工業高等専門学校, 生産デザイン工学科, 准教授
Affiliation (based on the past Project Information) *help	2022 – 2023: 豊橋技術科学大学, 工学(系)研究科(研究院), 准教授 2021: 北九州工業高等専門学校, 生産デザイン工学科, 准教授
Review Section/Research Field	Principal Investigator Basic Section 12040:Applied mathematics and statistics-related
Keywords	Principal Investigator 固有値の数値計算 / 精度保証付き数値計算 / 多重度 / ステガノグラフィ / グラフ / 固有値 / 固有値の多重度 / グラフの固有値 / Graph / Multiplicity / Eigenvalue

Research Projects
(1 results)
Research Products
(7 results)

Development of Eigenvalue Calculation Methods from a Geometric PerspectivePrincipal Investigator
- Principal Investigator
  
  Toyonaga Kenji
- Project Period (FY)
  2021 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 12040:Applied mathematics and statistics-related
- Research Institution
  Toyohashi University of Technology
  Kitakyushu National College of Technology

All 2023

All Journal Article Presentation

[Journal Article] Parter Vertices and Generalization of the Downer Branch Mechanism in the General Setting2023
- Author(s)
  Kenji Toyonaga, Charles R. Johnson
- Journal Title
  
  Linear and Multilinear Algebra
  
  Volume: - Issue: 8 Pages: 1239-1253
- DOI
  10.1080/03081087.2023.2176414
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K03361
[Journal Article] The effect of removing a 2-downer edge or a cut 2-downer edge triangle for an eigenvalue2023
- Author(s)
  Kenji Toyonaga
- Journal Title
  
  Special Matrices
  
  Volume: 11
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-21K03361
[Journal Article] Parter Vertices and Generalization of the Downer Branch Mechanism in the General Setting2023
- Author(s)
  Kenji Toyonaga Charles Johnson
- Journal Title
  
  Linear and Multilinear Algebra
  
  Volume: -
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K03361
[Presentation] グラフスペクトルのステガノグラフィへの応用2023
- Author(s)
  川口和久, 豊永憲治, 高橋茶子, 中井雄士, 鈴木幸太郎
- Organizer
  日本応用数理学会第１９回研究部会連合発表会
- Data Source
  KAKENHI-PROJECT-21K03361
[Presentation] グラフスペクトルを用いたグラフに対するステガノグラフィ2023
- Author(s)
  川口和久, 豊永憲治, 高橋茶子, 中井雄士, 鈴木幸太郎
- Organizer
  RCC・ISEC・IT・WBS合同研究会
- Data Source
  KAKENHI-PROJECT-21K03361
[Presentation] Generalization of the Downer Branch Mechanism and Edge Classification2023
- Author(s)
  Kenji Toyonaga
- Organizer
  Japanese Conference on Combinatorics and its Applications
- Data Source
  KAKENHI-PROJECT-21K03361
[Presentation] Classification of edges due to the change in multiplicity of an eigenvalue2023
- Author(s)
  Kenji Toyonaga
- Organizer
  10th International Congress on Industrial and Applied Mathematics
- Data Source
  KAKENHI-PROJECT-21K03361

TOYONAGA KENJI 豊永 憲治

Toyonaga Kenji 豊永 憲治

Research Projects

Research Products

Development of Eigenvalue Calculation Methods from a Geometric PerspectivePrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] Parter Vertices and Generalization of the Downer Branch Mechanism in the General Setting2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] The effect of removing a 2-downer edge or a cut 2-downer edge triangle for an eigenvalue2023

Author(s)

Journal Title

Data Source

[Journal Article] Parter Vertices and Generalization of the Downer Branch Mechanism in the General Setting2023

Author(s)

Journal Title

Data Source

[Presentation] グラフスペクトルのステガノグラフィへの応用2023

Author(s)

Organizer

Data Source

[Presentation] グラフスペクトルを用いたグラフに対するステガノグラフィ2023

Author(s)

Organizer

Data Source

[Presentation] Generalization of the Downer Branch Mechanism and Edge Classification2023

Author(s)

Organizer

Data Source

[Presentation] Classification of edges due to the change in multiplicity of an eigenvalue2023

Author(s)

Organizer

Data Source

TOYONAGA KENJI 豊永憲治

Toyonaga Kenji 豊永憲治