TAGAMI Keiji 田神慶士

… Alternative Names

Tagami Keiji 田神慶士

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Researcher Number	60778174
Other IDs
Affiliation (Current)	2026: 広島修道大学, 経済科学部, 教授
Affiliation (based on the past Project Information) *help	2022 – 2024: 広島修道大学, 経済科学部, 准教授 2019 – 2021: 国立研究開発法人水産研究・教育機構, 水産大学校, 助教 2016 – 2018: 東京理科大学, 理工学部数学科, 助教
Review Section/Research Field	Principal Investigator Basic Section 11020:Geometry-related / Geometry
Keywords	Principal Investigator 結び目 / ゼロトレース / 接触構造 / 正結び目 / リボン結び目 / リボンコンコーダンス / スライス結び目 / オープンブック分解 / ３次元多様体 / ホップ不変量 … More / フラットプラミングバスケット / 接触幾何学 / 絡み目 / サーストン・ベネカン数 / 正絡み目 / ラグランジアン充填 Less

Research Projects
(3 results)
Research Products
(17 results)

結び目のゼロトレースとスライス・リボン予想Principal Investigator
- Principal Investigator
  
  田神慶士
- Project Period (FY)
  2022 – 2026
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 11020:Geometry-related
- Research Institution
  Hiroshima Shudo University
Study on the negativities of knots via open book decompositions of 3-manifoldsPrincipal Investigator
- Principal Investigator
  
  Tagami Keiji
- Project Period (FY)
  2018 – 2022
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 11020:Geometry-related
- Research Institution
  Hiroshima Shudo University
  Fisheries Research and Education Agency
  Tokyo University of Science
Study of positive knots via contact structuresPrincipal Investigator
- Principal Investigator
  
  Tagami Keiji
- Project Period (FY)
  2016 – 2017
- Research Category
  
  Grant-in-Aid for Research Activity Start-up
- Research Field
  
  Geometry
- Research Institution
  Tokyo University of Science

All 2024 2023 2022 2021 2020 2019 2018 2017

All Journal Article Presentation

[Journal Article] An alternative proof for the minimality of strongly quasi-positive fibered knots in the ribbon concordance poset2024
- Author(s)
  Keiji Tagami
- Journal Title
  
  Bulletin of the Korean Mathematical Society
  
  Volume: 61 Pages: 779-784
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K13923
[Journal Article] A generalization of the slice-ribbon conjecture for two-bridge knots and $t_n$-move2024
- Author(s)
  Abe Tetsuya、Tagami Keiji
- Journal Title
  
  Tohoku Mathematical Journal
  
  Volume: 76 Issue: 4 Pages: 541-560
- DOI
  10.2748/tmj.20230316
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K13923
[Journal Article] On annulus presentations, dualizable patterns and RGB-diagrams2024
- Author(s)
  Tagami Keiji
- Journal Title
  
  Journal of Knot Theory and Its Ramifications
  
  Volume: 33 Issue: 09
- DOI
  10.1142/s0218216524970010
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K13923
[Journal Article] Remarks on the minimalities of two-bridge knots in the ribbon concordance poset2023
- Author(s)
  Tagami Keiji
- Journal Title
  
  Bulletin of the Belgian Mathematical Society - Simon Stevin
  
  Volume: 30 Issue: 3
- DOI
  10.36045/j.bbms.230312
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K13923
[Journal Article] Notes on constructions of knots with the same trace2022
- Author(s)
  Tagami Keiji
- Journal Title
  
  Hiroshima Mathematical Journal
  
  Volume: 52 Issue: 1 Pages: 1-15
- DOI
  10.32917/h2021005
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K13416
[Journal Article] Knots with infinitely many non-characterizing slopes2021
- Author(s)
  Abe Tetsuya、Tagami Keiji
- Journal Title
  
  Kodai Mathematical Journal
  
  Volume: 44 Issue: 3 Pages: 395-421
- DOI
  10.2996/kmj/kmj44301
- NAID
  130008114210
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K13416
[Journal Article] A note on stabilization heights of fiber surfaces and the Hopf invariants2021
- Author(s)
  Tagami Keiji
- Journal Title
  
  Bulletin of the Korean Mathematical Society
  
  Volume: 58 Pages: 1097-1107
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K13416
[Journal Article] Flat plumbing basket and contact structure2021
- Author(s)
  Ito Tetsuya、Tagami Keiji
- Journal Title
  
  Journal of Knot Theory and Its Ramifications
  
  Volume: 30 Issue: 02 Pages: 2150010-2150010
- DOI
  10.1142/s0218216521500103
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K13416, KAKENHI-PROJECT-19K03490
[Journal Article] On the Lagrangian fillability of almost positive links2019
- Author(s)
  Keiji Tagami
- Journal Title
  
  Journal of Korean Mathematical Society
  
  Volume: 56 Pages: 789-804
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K13416
[Journal Article] Characterization of Positive Links and the s-invariant for Links2017
- Author(s)
  Tetsuya Abe and Keiji Tagami
- Journal Title
  
  Canadian Journal of Mathematics
  
  Volume: 69 Issue: 6 Pages: 1201-1218
- DOI
  10.4153/cjm-2016-030-7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16H07230
[Presentation] リボンコンコーダンス半順序集合と極小元2023
- Author(s)
  田神慶士
- Organizer
  東京理科大学創域理工学部数理科学科談話会
- Invited
- Data Source
  KAKENHI-PROJECT-22K13923
[Presentation] 結び目のアニュラス表示から得られる双対化可能パターンの自然性2021
- Author(s)
  田神慶士
- Organizer
  2021年度日本数学会年会
- Data Source
  KAKENHI-PROJECT-18K13416
[Presentation] Annulus presentation and dualizable pattern2021
- Author(s)
  Tagami Keiji
- Organizer
  Intelligence of Low-dimensional Topology
- Data Source
  KAKENHI-PROJECT-18K13416
[Presentation] アニュラス表示から構成されるdualizable パターン2020
- Author(s)
  田神慶士
- Organizer
  N-KOOK セミナー
- Data Source
  KAKENHI-PROJECT-18K13416
[Presentation] 0-トレースが等しい結び目の組を構成する3 つの方法とその関係2020
- Author(s)
  田神慶士
- Organizer
  大阪大学トポロジーセミナー
- Data Source
  KAKENHI-PROJECT-18K13416
[Presentation] 絡み目のフラットプラミングバスケット表示と接触構造2018
- Author(s)
  田神慶士
- Organizer
  微分トポロジー
- Invited
- Data Source
  KAKENHI-PROJECT-18K13416
[Presentation] 結び目とラグランジアン充填2017
- Author(s)
  田神慶士
- Organizer
  関東若手幾何セミナー
- Data Source
  KAKENHI-PROJECT-16H07230

TAGAMI Keiji 田神 慶士

Tagami Keiji 田神 慶士

Research Projects

Research Products

結び目のゼロトレースとスライス・リボン予想Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Study on the negativities of knots via open book decompositions of 3-manifoldsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Study of positive knots via contact structuresPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] An alternative proof for the minimality of strongly quasi-positive fibered knots in the ribbon concordance poset2024

Author(s)

Journal Title

Data Source

[Journal Article] A generalization of the slice-ribbon conjecture for two-bridge knots and $t_n$-move2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] On annulus presentations, dualizable patterns and RGB-diagrams2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Remarks on the minimalities of two-bridge knots in the ribbon concordance poset2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Notes on constructions of knots with the same trace2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Knots with infinitely many non-characterizing slopes2021

Author(s)

Journal Title

DOI

NAID

Data Source

[Journal Article] A note on stabilization heights of fiber surfaces and the Hopf invariants2021

Author(s)

Journal Title

Data Source

[Journal Article] Flat plumbing basket and contact structure2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] On the Lagrangian fillability of almost positive links2019

Author(s)

Journal Title

Data Source

[Journal Article] Characterization of Positive Links and the s-invariant for Links2017

Author(s)

Journal Title

DOI

Data Source

[Presentation] リボンコンコーダンス半順序集合と極小元2023

Author(s)

Organizer

Data Source

[Presentation] 結び目のアニュラス表示から得られる双対化可能パターンの自然性2021

Author(s)

Organizer

Data Source

[Presentation] Annulus presentation and dualizable pattern2021

Author(s)

TAGAMI Keiji 田神慶士

Tagami Keiji 田神慶士