Koda Yuya 古宇田悠哉

… Alternative Names

KODA Yuya 古宇田悠哉

古宇田悠哉コウダユウヤ

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Researcher Number	20525167
Other IDs	https://orcid.org/0000-0003-2612-1946
Affiliation (Current)	2026: 慶應義塾大学, 経済学部(日吉), 教授
Affiliation (based on the past Project Information) *help	2023 – 2025: 慶應義塾大学, 経済学部(日吉), 教授 2024: 広島大学, 先進理工系科学研究科(理), 教授 2023: 慶應義塾大学, 先進理工系科学研究科(理), 教授 2020 – 2022: 広島大学, 先進理工系科学研究科(理), 教授 2015 – 2019: 広島大学, 理学研究科, 准教授 … More 2014 – 2015: 広島大学, 理学(系)研究科(研究院), 准教授 2012: 東北大学, 理学(系)研究科(研究院), 助教 2009 – 2012: Tohoku University, 大学院・理学研究科, 助教 2007: Keio University, 理工学部, 特別研究員(PD) 2006: 慶應義塾大学, 大学院理工学研究科, 特別研究員(DC1) 2005: 慶應義塾大学, 理工学研究科, 特別研究員(DC1) Less
Review Section/Research Field	Principal Investigator Geometry / Basic Section 11020:Geometry-related / Geometry Except Principal Investigator Basic Section 11020:Geometry-related / Broad Section B / Geometry
Keywords	Principal Investigator 写像類群 / 結び目 / 3次元多様体 / スパイン / 3 次元多様体 / Heegaard 分解 / Heegaard分解 / 幾何構造 / ４次元多様体 / ３次元多様体 … More / 接触構造 / Goeritz 群 / シャドウ / ハンドル体 / 絡み目 / 位相欠陥 / Alexander多項式 / フロースパイン / Reidemeister-Turaev torsion / 三次元多様体 / ヒーガード分解 / 色付きトラエフ-ビロ不変量 / ライデマイスタートーション / フロー / 多面体 / 国際情報交換イタリア / 安定写像 / 双曲体積 / 4 次元多様体 / 円盤複体 / 国際情報交換韓国 / ヘンペル距離 / トンネル / 位相的場の理論 / 空間グラフ / グラフ / 不変量 / 量子不変量 / 四面体分割 … More Except Principal Investigator ３次元多様体 / 交代絡み目 / ２橋絡み目 / ザイフェルト曲面 / 強可逆結び目 / 交代結び目 / 放物的変換 / 写像類群 / ヘガード分解 / クライン群 / ２橋結び目 / 多重次元Reebグラフ / Reeb complement / Gromollフィルトレーション / ホモトピー球面 / スペシャル・ジェネリック写像 / Reebグラフ / Reeb空間 / 位相欠陥 / Thom多項式 / 折り目写像 / 単純化 / 変形理論 / 特異点 / 次世代カタストロフ理論 / 幾何構造 / 多様体 / 幾何的トポロジー / 写像の特異点論 / 高分子 / トポロジー / 3次元トポロジー / ポリマー / 結び目 / Haken manifold / mapping class group / Heegaard surface / homotopy motion / 同変ザイフェルト種数 / 不変ザイフェルト曲面 / ３次元双曲多様体 / 非正曲率立方体分割 / チェカーボード曲面 / 同変種数 / ファイバー曲面 / ヘガード曲面 / ホモトピーモーション / Riley slice / 結び目理論 / 放物的生成系 / モノドロミー群 / 橋分解 / Hopfian群 / 自由周期結び目 / 解消トンネル / アキラル / 自由周期 / シンメトリー群 / CAT(0)空間 / デーン手術 / 離散群 / 穴あきトーラス / spatial deformation group / monodromy group / Heckoid群 / 測地線 / 放物変換 / 双曲結び目 / 双曲構造 Less

結び目のトポロジーとその高分子科学への応用の研究
- Principal Investigator
  
  下川航也
- Project Period (FY)
  2024 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 11020:Geometry-related
- Research Institution
  Ochanomizu University
3次元トポロジーに由来する写像類群の部分群の構造解明Principal Investigator
- Principal Investigator
  
  古宇田悠哉
- Project Period (FY)
  2024 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11020:Geometry-related
- Research Institution
  Keio University
Mathematical innovations woven by singularity theory and geometric topology
- Principal Investigator
  
  佐伯修
- Project Period (FY)
  2023 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (S)
- Review Section
  
  Broad Section B
- Research Institution
  Kyushu University
Research on differential and geometric structures of 3- and 4-manifolds with polyhedraPrincipal Investigator
- Principal Investigator
  
  KODA Yuya
- Project Period (FY)
  2020 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11020:Geometry-related
- Research Institution
  Keio University
  Hiroshima University
Geometric structures and combinatorial structures of 3-dimensional manifolds
- Principal Investigator
  
  Sakuma Makoto
- Project Period (FY)
  2020 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11020:Geometry-related
- Research Institution
  Osaka Metropolitan University
  Osaka City University
Research on shadow complexities and geometric structures of 3-manifoldsPrincipal Investigator
- Principal Investigator
  
  Koda Yuya
- Project Period (FY)
  2017 – 2020
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Hiroshima University
Geometric structures and combinaorial structures of 3-manifolds
- Principal Investigator
  
  Sakuma Makoto
- Project Period (FY)
  2015 – 2019
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Geometry
- Research Institution
  Hiroshima University
The mapping class groups of Heegaard splittingsPrincipal Investigator
- Principal Investigator
  
  Koda Yuya
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Geometry
- Research Institution
  Hiroshima University
3-manifold invariants as viewed from triangulationsPrincipal Investigator
- Principal Investigator
  
  KODA Yuya
- Project Period (FY)
  2009 – 2012
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Geometry
- Research Institution
  Tohoku University
種数2の向き付け可能閉三次元多様体の位相幾何学的分類と幾何構造についてPrincipal Investigator
- Principal Investigator
  
  古宇田悠哉
- Project Period (FY)
  2005 – 2007
- Research Category
  
  Grant-in-Aid for JSPS Fellows
- Research Field
  
  Geometry
- Research Institution
  Keio University

[Journal Article] The Goeritz groups of (1,1)-decompositions2025
- Author(s)
  Koda Yuya、Tanaka Yuki
- Journal Title
  
  Journal of Topology and Analysis
  
  Volume: － Issue: 04 Pages: 1-18
- DOI
  10.1142/s1793525325500074
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23H05437, KAKENHI-PROJECT-24K06744
[Journal Article] Divides and hyperbolic volumes2024
- Author(s)
  Furutani Ryoga, Koda Yuya
- Journal Title
  
  ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE
  
  Volume: - Pages: 30-30
- DOI
  10.2422/2036-2145.202309_005
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03588, KAKENHI-PROJECT-23H05437, KAKENHI-PROJECT-24K06744
[Journal Article] Homotopy classification of knotted defects in ordered media2024
- Author(s)
  Nozaki Y.、Kalman T.、Teragaito M.、Koda Y.
- Journal Title
  
  Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
  
  Volume: 480 Issue: 2300 Pages: 20240148-20240148
- DOI
  10.1098/rspa.2024.0148
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-23H05437, KAKENHI-PROJECT-24H00686, KAKENHI-PROJECT-20K14317, KAKENHI-PROJECT-24K06744, KAKENHI-PROJECT-23K12974
[Journal Article] Presentation of the fundamental groups of complements of shadows2023
- Author(s)
  Ishikawa Masaharu、Koda Yuya、Naoe Hironobu
- Journal Title
  
  IRMA Lectures in Mathematics and Theoretical Physics, European Mathematical Society Press, Berlin
  
  Volume: 34 Pages: 557-588
- DOI
  10.4171/irma/34/25
- ISBN
  9783985470242, 9783985475247
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23H05437
[Journal Article] Presentation of the fundamental groups of complements of shadows2023
- Author(s)
  Masaharu Ishikawa, Yuya Koda, Hironobu Naoe
- Journal Title
  
  Essays in Geometry: Dedicated to Norbert A’Campo (ed. A. papadopoulos), IRMA Lectures in Mathematics and Theoretical Physics,34
  
  Volume: - Pages: 557-588
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03588
[Journal Article] Positive flow-spines and contact 3-manifolds2023
- Author(s)
  Ippei Ishii, Masaharu Ishikawa, Yuya Koda, Hironobu Naoe
- Journal Title
  
  Annali di Matematica Pura ed Applicata (1923 -)
  
  Volume: - Issue: 5 Pages: 2091-2126
- DOI
  10.1007/s10231-023-01314-1
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03499, KAKENHI-PROJECT-20K14316, KAKENHI-PROJECT-20K03588, KAKENHI-PROJECT-23H05437
[Journal Article] Positive flow-spines and contact 3-manifolds, II2023
- Author(s)
  Ishii Ippei、Ishikawa Masaharu、Koda Yuya、Naoe Hironobu
- Journal Title
  
  Annali di Matematica Pura ed Applicata (1923 -)
  
  Volume: － Issue: 3 Pages: 2091-2126
- DOI
  10.1007/s10231-023-01400-4
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K14316, KAKENHI-PROJECT-19K03499, KAKENHI-PROJECT-20K03588, KAKENHI-PROJECT-23H05437, KAKENHI-PROJECT-23K20798, KAKENHI-PROJECT-24K06744
[Journal Article] Four-manifolds with shadow-complexity one2022
- Author(s)
  Koda Yuya、Martelli Bruno、Naoe Hironobu
- Journal Title
  
  Annales de la Faculte des sciences de Toulouse : Mathematiques
  
  Volume: 31 Issue: 4 Pages: 1111-1212
- DOI
  10.5802/afst.1715
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03588, KAKENHI-PROJECT-20K14316
[Journal Article] Handlebody decompositions of three-manifolds and polycontinuous patterns2022
- Author(s)
  Sakata N.、Mishina R.、Ogawa M.、Ishihara K.、Koda Y.、Ozawa M.、Shimokawa K.
- Journal Title
  
  Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
  
  Volume: 478 Issue: 2260 Pages: 20220073-20220073
- DOI
  10.1098/rspa.2022.0073
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PLANNED-17H06463, KAKENHI-PROJECT-17K05262, KAKENHI-PROJECT-20K03588, KAKENHI-PROJECT-20J20545, KAKENHI-PROJECT-23K20791
[Journal Article] Distance and the Goeritz groups of bridge decompositions2021
- Author(s)
  D. Iguchi and Y. Koda
- Journal Title
  
  Pacific Journal of Mathematics
  
  Volume: 315 Issue: 2 Pages: 347-368
- DOI
  10.2140/pjm.2021.315.347
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21J10249, KAKENHI-PROJECT-20K03588
[Journal Article] Braid group and leveling of a knot2021
- Author(s)
  Sangbum Cho, Yuya Koda, Arim Seo
- Journal Title
  
  Journal of Topology and Analysis
  
  Volume: － Issue: 04 Pages: 945-968
- DOI
  10.1142/s1793525321500114
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03588, KAKENHI-PROJECT-17K05254
[Journal Article] Four-manifolds with shadow-complexity one2021
- Author(s)
  Yuya Koda, Bruno Martelli, Hironobu Naoe,
- Journal Title
  
  Annales de la Faculte des Sciences de Toulouse
  
  Volume: －
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03588
[Journal Article] Four-maifolds with shadow-complexity one2021
- Author(s)
  Yuya Koda, Bruno Martelli, Hironobu Naoe
- Journal Title
  
  Annales de la Faculte des Sciences de Toulouse
  
  Volume: －
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05254
[Journal Article] Goeritz groups of bridge decompositions,2021
- Author(s)
  Susumu Hirose, Daiki Iguchi, Eiko Kin, Yuya Koda
- Journal Title
  
  International Mathematics Research Notices,
  
  Volume: - Issue: 12 Pages: 9308-9356
- DOI
  10.1093/imrn/rnab001
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-16K05156, KAKENHI-PROJECT-18K03299, KAKENHI-PROJECT-20K03588, KAKENHI-PROJECT-20K03618, KAKENHI-PROJECT-17K05254, KAKENHI-PROJECT-21J10249
[Journal Article] Extending automorphisms of the genus-2 surface over the 3-sphere2020
- Author(s)
  Kenta Funayoshi, Yuya Koda
- Journal Title
  
  The Quarterly Journal of Mathematics
  
  Volume: 71 Issue: 1 Pages: 175-196
- DOI
  10.1093/qmathj/haz042
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05254
[Journal Article] Twisted book decompositions and the Goeritz groups2020
- Author(s)
  Daiki Iguchi, Yuya Koda
- Journal Title
  
  Topology and its Applications
  
  Volume: 272 Pages: 107064-107064
- DOI
  10.1016/j.topol.2020.107064
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05254, KAKENHI-PROJECT-15H03620
[Journal Article] "Monodromy groups" of Heegaard surfaces of 3-manifolds - Research announcement -2020
- Author(s)
  Yuya Koda, Makoto Sakuma
- Journal Title
  
  数理解析研究所講究録
  
  Volume: 2163 Pages: 47-61
- Data Source
  KAKENHI-PROJECT-20K03588
[Journal Article] “Monodromy groups” of Heegaard surfaces of 3-manifolds --Research announcement--2020
- Author(s)
  Yuya Koda, Makoto Sakuma
- Journal Title
  
  RIMS Kokuroku
  
  Volume: 2063 Pages: 47-61
- Open Access
- Data Source
  KAKENHI-PROJECT-20K03614
[Journal Article] Disk surgery and the primitive disk complexes of the 3-sphere2020
- Author(s)
  Sangbum Cho, Yuya Koda, Jung Hoon Lee
- Journal Title
  
  Topology and its Applications
  
  Volume: 272 Pages: 107092-107092
- DOI
  10.1016/j.topol.2020.107092
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05254
[Journal Article] Shadows of acyclic 4-manifolds with sphere boundary2020
- Author(s)
  Yuya Koda, Hironobu Naoe
- Journal Title
  
  Algebraic & Geometric Topology
  
  Volume: 20 Issue: 7 Pages: 3707-3731
- DOI
  10.2140/agt.2020.20.3707
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03588, KAKENHI-PROJECT-20K14316, KAKENHI-PROJECT-17K05254, KAKENHI-PROJECT-17H02845
[Journal Article] Neighborhood equivalence for multibranched surfaces in 3-manifolds2019
- Author(s)
  Ishihara Kai、Koda Yuya、Ozawa Makoto、Shimokawa Koya
- Journal Title
  
  Topology and its Applications
  
  Volume: 257 Pages: 11-21
- DOI
  10.1016/j.topol.2019.02.005
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05262, KAKENHI-PROJECT-17K14190, KAKENHI-ORGANIZER-17H06460, KAKENHI-PLANNED-17H06463, KAKENHI-PROJECT-16H03928, KAKENHI-PROJECT-16K13751, KAKENHI-PROJECT-17K05254
[Journal Article] The mapping class groups of reducible Heegaard splittings of genus two2019
- Author(s)
  Sangbum Cho, Yuya Koda
- Journal Title
  
  Transactions of the American Mathematical Society
  
  Volume: 371 Issue: 4 Pages: 2473-2502
- DOI
  10.1090/tran/7375
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05254
[Journal Article] The disk complex and 2-bridge knots2018
- Author(s)
  Sangbum Cho, Yuya Koda
- Journal Title
  
  Journal of Knot Theory and its Ramifications
  
  Volume: 27 Issue: 04 Pages: 1850027-1850027
- DOI
  10.1142/s021821651850027x
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05254
[Journal Article] Haken spheres for genus two Heegaard splittings2018
- Author(s)
  Sangbum Cho, Yuya Koda
- Journal Title
  
  Mathematical Proceedings of the Cambridge Philosophical Society
  
  Volume: 165 Issue: 3 Pages: 563-572
- DOI
  10.1017/s0305004117000718
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05254
[Journal Article] Stable maps and branched shadows of 3-manifolds2017
- Author(s)
  Masaharu Ishikawa, Yuya Koda
- Journal Title
  
  Mathematische Annalen
  
  Volume: 367 Issue: 3-4 Pages: 1819-1863
- DOI
  10.1007/s00208-016-1403-4
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800028
[Journal Article] Connected primitive disk complexes and genus two Goeritz groups of lens spaces2016
- Author(s)
  Sangbum Cho, Yuya Koda
- Journal Title
  
  International Mathematics Research Notices
  
  Volume: 2016 Pages: 7302-7340
- DOI
  10.1093/imrn/rnv399
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800028
[Journal Article] Arc complexes, sphere complexes and Goeritz groups2016
- Author(s)
  Sangbum Cho, Yuya Koda, Seo Arim
- Journal Title
  
  Michigan Mathematical Journal
  
  Volume: 65 Issue: 2 Pages: 333-351
- DOI
  10.1307/mmj/1465329016
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800028
[Journal Article] Disk complexes and genus two Heegaard splittings for nonprime 3-manifolds2015
- Author(s)
  Sangbum Cho, Yuya Koda
- Journal Title
  
  International Mathematics Research Notices
  
  Volume: 2015 Pages: 4344-4371
- DOI
  10.1093/imrn/rnu061
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800028
[Journal Article] Essential surfaces of non-negative Euler characteristic in genus two handlebody exteriors2015
- Author(s)
  Yuya Koda, Makoto Ozawa
- Journal Title
  
  Transactions of the American Mathematical Society
  
  Volume: 367 Issue: 4 Pages: 2875-2904
- DOI
  10.1090/s0002-9947-2014-06199-0
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800028
[Journal Article] Knot homotopy in subspaces of the 3-sphere2015
- Author(s)
  Yuya Koda, Makoto Ozawa
- Journal Title
  
  Pacific J. Math.
  
  Volume: 282 Issue: 2 Pages: 389-414
- DOI
  10.2140/pjm.2016.282.389
- Peer Reviewed / Acknowledgement Compliant / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26400097, KAKENHI-PROJECT-26800028, KAKENHI-PROJECT-16H03928
[Journal Article] Automorphisms of the 3-sphere that preserve spatial graphs and handlebody-knots2015
- Author(s)
  Yuya Koda
- Journal Title
  
  Mathematical Proceedings of the Cambridge Philosophical Society
  
  Volume: 159 Issue: 1 Pages: 1-22
- DOI
  10.1017/s0305004114000723
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800028
[Journal Article] The genus two Goeritz group of S^2 × S^12014
- Author(s)
  Sangbum Cho, Yuya Koda
- Journal Title
  
  Mathematical Research Letters
  
  Volume: 21 Issue: 3 Pages: 449-460
- DOI
  10.4310/mrl.2014.v21.n3.a3
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800028
[Journal Article] (2+1)-dimensional TQFT model for Colored Turaev-Viro invariants2013
- Author(s)
  Yuya Koda, Taiji Taniguchi
- Journal Title
  
  International Mathematics Research Notices
  
  Volume: IMRN 2013 Issue: 1 Pages: 218-242
- DOI
  10.1093/imrn/rnr238
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740045
[Journal Article] Topological symmetry groups and mapping class groups for spatial graphs2013
- Author(s)
  Sangbum Cho, Yuya Koda
- Journal Title
  
  Michigan Mathematical Journal
  
  Volume: 62 Pages: 131-142
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740045
[Journal Article] Links and spines2012
- Author(s)
  Yuya Koda
- Journal Title
  
  Journal of Knot Theory and its Ramifications 21
  
  Volume: [27] Issue: 03 Pages: 1250027-1250027
- DOI
  10.1142/s0218216511009674
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740045
[Journal Article] The Reidemeister-Turaev torsion of standard Spin^c structures on Seifert Fibered 3-manifolds2012
- Author(s)
  Yuya Koda
- Journal Title
  
  Annales de la Faculte des Sciences de Toulouse. Mathematiques. Serie 6 21
  
  Volume: 21 Issue: 4 Pages: 745-768
- DOI
  10.5802/afst.1349
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740045
[Journal Article] The Reidemeister-Turaev torsion of standard Spin^c structures on Seifert Fibered 3-manifolds2012
- Author(s)
  Yuya Koda
- Journal Title
  
  Annales de la Faculte des Sciences de Toulouse. Serie VI. Mathematiques
  
  Volume: 21 Pages: 745-768
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740045
[Journal Article] Tunnel complexes of 3-manifolds2011
- Author(s)
  Yuya Koda
- Journal Title
  
  Algebraic & Geometric Topology
  
  Volume: 11 Issue: 1 Pages: 417-447
- DOI
  10.2140/agt.2011.11.417
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740045
[Journal Article] Topological symmetry groups and mapping class groups of spatial graphs2011
- Author(s)
  古宇田悠哉
- Journal Title
  
  HAKONE SEMINAR
  
  Volume: 27 Pages: 19-28
- Data Source
  KAKENHI-PROJECT-21740045
[Journal Article] Tunnel complexes of 3-manifolds2011
- Author(s)
  Yuya Koda
- Journal Title
  
  Algebr.Geom.Topol.
  
  Volume: 11 Pages: 417-447
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740045
[Journal Article] Colored Turaev-Viro invariants of twist knots2009
- Author(s)
  Yuya Koda
- Journal Title
  
  Topology and its Applications
  
  Volume: 156 Pages: 577-593
- URL
  http://www.sciencedirect.com/science/article/pii/S0166864108002897.
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740045
[Journal Article] Branched spines and Heegaard genus of 3-manifolds2007
- Author(s)
  Yuya KODA
- Journal Title
  
  Manuscripta Mathematica 123
  
  Pages: 285-299
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-05J08136
[Journal Article] Strongly-cyclic branched coverings and the Alexander polynomial of knots in rational homology spheres2007
- Author(s)
  Yuya Koda
- Journal Title
  
  Mathematical Proceedings of the Cambridge Philosophical Society 142・2
  
  Pages: 259-268
- Data Source
  KAKENHI-PROJECT-05J08136
[Journal Article] Branched spines and Heegaard genus of 3-manifalds2007
- Author(s)
  Yuya Koda
- Journal Title
  
  Manuscripta Mathematica 123
  
  Pages: 285-299
- Data Source
  KAKENHI-PROJECT-05J08136
[Journal Article] Spines, Heegaard splittings and the Reidemeister-Turaev torsion2007
- Author(s)
  Yuya KODA
- Journal Title
  
  Tokyo Journal of Mathematics 30
  
  Pages: 417-439
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-05J08136
[Journal Article] On a symbolic encoding of 3-manifolds2006
- Author(s)
  古宇田悠哉
- Journal Title
  
  研究集会「Gradと3次元多様体の研究」講究録 22
  
  Pages: 27-42
- Data Source
  KAKENHI-PROJECT-05J08136
[Journal Article] Spines, Heegaard splittings and the Reidemeister-Turaev torsion
- Author(s)
  Yuya Koda
- Journal Title
  
  Tokyo Journal of Mathematics (未定)(掲載決定)
- Data Source
  KAKENHI-PROJECT-05J08136
[Journal Article] A Heegaard-type presentation of branched spines and the Reidemeister-Turaev torsion
- Author(s)
  Yuya KODA
- Journal Title
  
  Mathematische Zeitschrift (未定)(掲載決定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-05J08136
[Journal Article] O-graphic study of closed 3-manifolds
- Author(s)
  Yuya Koda
- Journal Title
  
  箱根セミナ2010
  
  Volume: (未定)(to appear)
- Data Source
  KAKENHI-PROJECT-21740045
[Journal Article] On the Reidemeister-Turaev torsion of standard Spin^c structures on Seifert fibered 3-manifolds
- Author(s)
  Yuya Koda
- Journal Title
  
  RIMS Kokyuroku
  
  Volume: (未定)(to appear)
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] On the Powell Conjecture for the Heegaard Splittings of the 3-Sphere I, II, III2025
- Author(s)
  Yuya Koda
- Organizer
  Algebraic Geometry, Topology, Combinatorics and Related Topics 2025
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24K06744
[Presentation] On the Powell Conjecture for the Heegaard Splittings of the 3-Sphere I, II, III2025
- Author(s)
  Yuya Koda
- Organizer
  Algebraic Geometry, Topology, Combinatorics and Related Topics 2025, 徳島大学
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23H05437
[Presentation] Mathematical Perspectives on Vortex Structure and Simulation2024
- Author(s)
  Yuya Koda
- Organizer
  WPI-SKCM2 2024 Winter School
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24K06744
[Presentation] Mathematical Perspectives on Vortex Structure and Simulation2024
- Author(s)
  Yuya Koda
- Organizer
  WPI-SKCM2 2024 Winter School, 広島大学
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23H05437
[Presentation] Homotopy classification of knotted defects in ordered media2024
- Author(s)
  Yuya Koda
- Organizer
  SKCM2 Spring Symposium
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] Homotopy classification of knotted defects in ordered media2024
- Author(s)
  Yuya Koda
- Organizer
  SKCM2 Spring Symposium
- Invited
- Data Source
  KAKENHI-PROJECT-23H05437
[Presentation] The Powell Conjecture for the genus-three Heegaard splitting of the 3-sphere2024
- Author(s)
  Yuya Koda
- Organizer
  Mini-Workshop on Knots and Manifolds
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] The Powell Conjecture for the genus-three Heegaard splitting of the 3-sphere2024
- Author(s)
  Yuya Koda
- Organizer
  Mini-Workshop on Knots and Manifolds
- Invited
- Data Source
  KAKENHI-PROJECT-23H05437
[Presentation] The Powell Conjecture for the genus-3 and 4 Heegaard splittings of the 3-sphere2024
- Author(s)
  Yuya Koda
- Organizer
  京都大学数学大談話会, 京都大学数理解析研究所
- Invited
- Data Source
  KAKENHI-PROJECT-23H05437
[Presentation] The Powell Conjecture for the genus-3 and 4 Heegaard splittings of the 3-sphere2024
- Author(s)
  Yuya Koda
- Organizer
  京都大学数学大談話会
- Invited
- Data Source
  KAKENHI-PROJECT-24K06744
[Presentation] Shadows, divides and hyperbolic volumes2023
- Author(s)
  Yuya Koda
- Organizer
  トポロジー火曜セミナー, 東京大学
- Invited
- Data Source
  KAKENHI-PROJECT-23H05437
[Presentation] Shadows, divides and hyperbolic volumes2023
- Author(s)
  Yuya Koda
- Organizer
  Topology and Geometry of Low-Dimensional Manifolds 2023
- Invited
- Data Source
  KAKENHI-PROJECT-23H05437
[Presentation] Homotopy classificationof biaxial nematic liquid crystal textures2023
- Author(s)
  Yuya Koda
- Organizer
  東京女子大学トポロジーセミナー
- Invited
- Data Source
  KAKENHI-PROJECT-23H05437
[Presentation] Homotopy classification of biaxial nematic liquid crystal textures2023
- Author(s)
  Yuya Koda
- Organizer
  東京女子大学トポロジーセミナー
- Invited
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] Shadows, divides and hyperbolic volumes2023
- Author(s)
  Yuya Koda
- Organizer
  Topology and Geometry of Low-Dimensional Manifolds 2023
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] Shadows, divides and hyperbolic volumes2023
- Author(s)
  古宇田悠哉
- Organizer
  トポロジー火曜セミナー, 東京大学
- Invited
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] Heegaard 分解の写像類群2022
- Author(s)
  古宇田悠哉
- Organizer
  2022年日本数学会年会特別講演 (トポロジー分科会), 埼玉大学 (Zoom)
- Invited
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] Singularity theory in the study of mapping class groups of Heegaard splittings, I, II2022
- Author(s)
  Yuya Koda
- Organizer
  Singularity theory and geometric topology
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] On the mapping class groups of Heegaard splittings under stabilizations2022
- Author(s)
  Yuya Koda
- Organizer
  Geometry in Low Dimensions 2022
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] Homotopy motions of surfaces in 3-manifolds2021
- Author(s)
  Yuya Koda
- Organizer
  AS-NCTS Geometry Seminar, 中央研究院 (Webex), 台北 (台湾)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] Book rotations in subgroups of mapping class groups associated with Heegaard splittings2021
- Author(s)
  古宇田悠哉
- Organizer
  微分トポロジーセミナー, 京都大学 (Zoom)
- Invited
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] Goeritz groups of bridge decompositions2020
- Author(s)
  古宇田悠哉
- Organizer
  トポロジー火曜セミナー, 東京大学 (Zoom)
- Invited
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] Turaev のシャドウとその複雑度2020
- Author(s)
  古宇田悠哉
- Organizer
  N-KOOKセミナー (Zoom)
- Invited
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] `Monodromy groups” of Heegaard surfaces of 3-manifolds2020
- Author(s)
  古宇田悠哉
- Organizer
  埼玉大学談話会 (Zoom)
- Invited
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] Goeritz groups of bridge decompositions2020
- Author(s)
  古宇田悠哉
- Organizer
  トポロジー火曜セミナー, 東京大学 (Zoom)
- Invited
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] Turaev のシャドウとその複雑度2020
- Author(s)
  古宇田悠哉
- Organizer
  N-KOOKセミナー (Zoom)
- Invited
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] “Monodromy groups” of Heegaard surfaces of 3-manifolds2020
- Author(s)
  古宇田悠哉
- Organizer
  埼玉大学談話会 (Zoom)
- Invited
- Data Source
  KAKENHI-PROJECT-20K03588
[Presentation] Positive flow-spines and contact 3-manifolds2019
- Author(s)
  古宇田悠哉
- Organizer
  広島大学トポロジー・幾何セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] Positive flow-spines and contact 3-manifolds2019
- Author(s)
  Yuya Koda
- Organizer
  Intelligence of Low-dimensional Topology
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] 3・4 次元多様体のシャドウと安定写像2019
- Author(s)
  古宇田悠哉
- Organizer
  研究集会「接触構造, 特異点, 微分方程式及びその周辺」
- Invited
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] Extending automorphisms of the genus-2 surface over the 3-sphere2018
- Author(s)
  Yuya Koda
- Organizer
  Topology Seminar at Chung-Ang University
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] Positive flow-spines and contact 3-manifolds2018
- Author(s)
  古宇田悠哉
- Organizer
  研究集会「葉層構造の幾何学とその応用」
- Invited
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] 閉 4 次元多様体のシャドウ複雑度2018
- Author(s)
  古宇田悠哉
- Organizer
  研究集会「Graphと3次元多様体の研究」
- Invited
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] Shadow complexity of 3- and 4-manifolds2018
- Author(s)
  古宇田悠哉
- Organizer
  第65回トポロジーシンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] 閉 4 次元多様体のシャドウ複雑度2018
- Author(s)
  古宇田悠哉
- Organizer
  広島大学トポロジー・幾何セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] 欠陥のトポロジー2018
- Author(s)
  古宇田悠哉
- Organizer
  キラリティー，トポロジー，結び目論第２回研究会
- Invited
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] Positive flow-spines and contact 3-manifolds2018
- Author(s)
  Yuya Koda
- Organizer
  Workshop ``New development of low-dimensional topology"
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] The mapping class groups of Heegaard splittings for 3-manifolds2017
- Author(s)
  Yuya Koda
- Organizer
  Capital Normal University-Hiroshima University Joint conference on Mathematics
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] The disk complex and 2-bridge knots2017
- Author(s)
  古宇田悠哉
- Organizer
  研究集会「Graphと3次元多様体の研究」
- Invited
- Data Source
  KAKENHI-PROJECT-17K05254
[Presentation] 結び目の transient number について2016
- Author(s)
  古宇田悠哉
- Organizer
  研究集会「Graphと3次元多様体の研究」
- Place of Presentation
  東洋大学箱根保養所
- Year and Date
  2016-10-26
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] Stable maps and branched shadows of 3-manifolds2016
- Author(s)
  Yuya Koda
- Organizer
  The 7th HYU Math-Workshop ``Low Dimensional Topology",
- Place of Presentation
  Hanyang University, 韓国
- Year and Date
  2016-09-09
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] The Goeritz groups of Heegaard splittings for 3-manifolds2016
- Author(s)
  Yuya Koda
- Organizer
  AMS Sectional Meeting ``Special Session on Decomposing 3-manifolds"
- Place of Presentation
  Bowdoin College, アメリカ
- Year and Date
  2016-09-24
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] The tree of tunnels for knots in S^2 × S^12015
- Author(s)
  Yuya Koda
- Organizer
  AMS Sectional Meeting ``Special Session on Spatial Graphs"
- Place of Presentation
  California State University, Fullerton (アメリカ)
- Year and Date
  2015-10-25
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] ハンドル体結び目のモジュライ空間について2015
- Author(s)
  古宇田悠哉
- Organizer
  研究会「ハンドル体結び目とその周辺VIII」
- Place of Presentation
  早稲田大学
- Year and Date
  2015-09-26
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] Arc complexes, sphere complexes and Goeritz groups2015
- Author(s)
  古宇田悠哉
- Organizer
  農工大セミナー
- Place of Presentation
  東京農工大学
- Year and Date
  2015-07-31
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] Stable maps and branched shadows of 3-manifolds2015
- Author(s)
  Yuya Koda
- Organizer
  京都大学数理解析研究所合宿型セミナー "Topology, Geometry and Algebra of low-dimensional manifolds"
- Place of Presentation
  沼津KKRはまゆう
- Year and Date
  2015-05-26
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] 3 次元多様体の安定写像と分岐シャドー2015
- Author(s)
  古宇田悠哉
- Organizer
  N-KOOKセミナー
- Place of Presentation
  大阪市立大学文化交流センター
- Year and Date
  2015-10-03
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] 3 次元多様体の安定写像と分岐シャドーについて2015
- Author(s)
  古宇田悠哉
- Organizer
  広島大学談話会
- Place of Presentation
  広島大学
- Year and Date
  2015-01-13
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] The Goeritz groups of Heegaard splittings for 3-manifolds2015
- Author(s)
  Yuya Koda
- Organizer
  研究集会 ``Intelligence of Low-dimensional Topology"
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2015-05-21
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] Heegaard 分解の Goeritz 群－有限表示とその応用－2015
- Author(s)
  古宇田悠哉
- Organizer
  東京理科大学特異点・トポロジーセミナー
- Place of Presentation
  東京理科大学
- Year and Date
  2015-07-03
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] Heegaard 分解の Goeritz 群2015
- Author(s)
  古宇田悠哉
- Organizer
  東工大トポロジーセミナー
- Place of Presentation
  東京工業大学
- Year and Date
  2015-07-15
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] Knot homotopy in subspaces of the 3-sphere2015
- Author(s)
  Yuya Koda
- Organizer
  The 5th HYU Math-Workshop ``Low Dimensional Topology"
- Place of Presentation
  Hanyang University (韓国)
- Year and Date
  2015-02-04
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] Stable maps and branched shadows of 3-manifolds2015
- Author(s)
  古宇田悠哉
- Organizer
  研究集会 ``Branched Coverings, Degenerations, and Related Topics 2015"
- Place of Presentation
  東北学院大学
- Year and Date
  2015-02-21
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] Stable maps and branched shadows of 3-manifolds2014
- Author(s)
  Yuya Koda
- Organizer
  the First Joint International Meeting 2014 of the Spanish and Italian Mathematical Societies (RSME-SCM-SEMA-SIMAI-UMI)
- Place of Presentation
  University of the Basque Country (スペイン)
- Year and Date
  2014-06-30
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] Knot homotopy in a subspace of the 3-sphere2014
- Author(s)
  古宇田悠哉
- Organizer
  広島大学トポロジー・幾何セミナー
- Place of Presentation
  広島大学
- Year and Date
  2014-11-18
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[Presentation] Primitive disk complexes and genus two Goeritz groups of all lens spaces2012
- Author(s)
  Yuya Koda
- Organizer
  Seminari di Geometria, Universita di Pisa
- Place of Presentation
  イタリア
- Year and Date
  2012-09-19
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Primitive disk complexes and genus two Goeritz groups of all lens spaces2012
- Author(s)
  古宇田悠哉
- Organizer
  低次元多様体北見セミナー(2012)
- Place of Presentation
  北見工業大学，北海道
- Invited
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Primitive disk complexes and genus two Goeritz groups of all lens spaces2012
- Author(s)
  Yuya Koda
- Organizer
  Seminari di Geometria, Universita di Pisa
- Place of Presentation
  ピサ，イタリア
- Invited
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Spring Workshop 2012 on Low-Dimensional Topology and its Ramifications Joint Workshop 「ハンドル体結び目とその周辺 IV」2012
- Author(s)
  古宇田悠哉
- Organizer
  名城大学名駅サテライト
- Place of Presentation
  名古屋
- Year and Date
  2012-03-04
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] チェーン絡み目の例外的手術について(Martelli-Petronio, Martellli-Petronio-Roukemaの仕事の解説)2012
- Author(s)
  古宇田悠哉
- Organizer
  日大トポロジーセミナー
- Place of Presentation
  日本大学，東京
- Invited
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] ハンドル体結び目のシンメトリー群2012
- Author(s)
  古宇田悠哉
- Organizer
  Spring Workshop 2012 on Low-Dimensional Topology and its Ramifications Joint Workshop「ハンドル体結び目とその周辺IV」
- Place of Presentation
  名古屋
- Year and Date
  2012-03-04
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Automorphisms of the 3-sphere that preserve knotted handlebodies of genus two2011
- Author(s)
  古宇田悠哉
- Organizer
  広島大学トポロジー・幾何セミナー
- Place of Presentation
  広島大学
- Year and Date
  2011-01-25
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Automorphisms of the 3-sphere that preserve spatial graphs and handle body-knots2011
- Author(s)
  古宇田悠哉
- Organizer
  早大理工トポロジーセミナー
- Place of Presentation
  東京
- Year and Date
  2011-08-29
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Automorphisms of the3-sphere that preserve spatial graphs and handlebody-knots2011
- Author(s)
  古宇田悠哉
- Organizer
  早大理工トポロジーセミナー, 早稲田大学
- Place of Presentation
  東京
- Year and Date
  2011-08-29
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] 3 次元球面内のグラフとハンドル体の対称性について2011
- Author(s)
  古宇田悠哉
- Organizer
  東北大学幾何セミナー, 東北大学
- Place of Presentation
  仙台
- Year and Date
  2011-10-17
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Automorphisms of the 3-sphere that preserve spatial graphs and handlebody-knots2011
- Author(s)
  Yuya Koda
- Organizer
  Oberseminar Geometrie, Topologie und Analysis
- Place of Presentation
  ドイツ,ケルン
- Year and Date
  2011-06-24
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Automorphisms of the3-sphere that preserve knotted handlebodies of genus two2011
- Author(s)
  古宇田悠哉
- Organizer
  広島大学トポロジー・幾何セミナー, 広島大学
- Place of Presentation
  東広島
- Year and Date
  2011-01-25
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Mapping class groups and topological symmetry groups of spatial graphs2011
- Author(s)
  古宇田悠哉
- Organizer
  研究集会「Graphと3次元多様体の研究」
- Place of Presentation
  箱根
- Year and Date
  2011-10-26
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] 3次元球面内のグラフとハンドル体の対称性について2011
- Author(s)
  古宇田悠哉
- Organizer
  東北大学幾何セミナー
- Place of Presentation
  仙台
- Year and Date
  2011-10-17
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Automorphisms of the3-sphere that preserve spatial graphs and handlebody-knots2011
- Author(s)
  Yuya Koda
- Organizer
  Oberseminar Geometrie, Topologie und Analysis, University of Cologne
- Place of Presentation
  ドイツ
- Year and Date
  2011-06-24
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Introduction to colored Turaev-Viro invariants2010
- Author(s)
  Yuya Koda
- Organizer
  Workshop : Lefschetz fibration and category theory
- Place of Presentation
  大阪大学
- Year and Date
  2010-06-26
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] On the Reidemeister-Turaev torsion of standard Spin^c structures on Seifert fibered 3-manifolds,"Twisted topological invariants and topology of low-dimensional manifolds"2010
- Author(s)
  Yuya Koda
- Organizer
  京都大学数理解析研究所合宿型セミナー , あきた白神体験センター
- Place of Presentation
  秋田
- Year and Date
  2010-09-15
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Introduction to colored Turaev-Viro invariants2010
- Author(s)
  古宇田悠哉
- Organizer
  Workshop: Lefschetz fibration and category theory, 大阪大学
- Place of Presentation
  大阪
- Year and Date
  2010-06-26
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Quotients of disk complexes by group actions2010
- Author(s)
  古宇田悠哉
- Organizer
  研究会「結び目と3次元多様体」, 慶應義塾大学
- Place of Presentation
  横浜
- Year and Date
  2010-03-18
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Automorphisms of the 3-sphere that preserve knotted handlebodies of genus two2010
- Author(s)
  古宇田悠哉
- Organizer
  上智トポロジー研究集会
- Place of Presentation
  上智大学
- Year and Date
  2010-12-25
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Automorphisms of the3-sphere that preserve knotted handlebodies of genus two2010
- Author(s)
  古宇田悠哉
- Organizer
  上智トポロジー研究集会, 上智大学
- Place of Presentation
  東京
- Year and Date
  2010-12-25
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] O-graphic study of closed 3-manifolds2010
- Author(s)
  古宇田悠哉
- Organizer
  研究集会「Graphと3次元多様体の研究」
- Place of Presentation
  東洋大学箱根保養所
- Year and Date
  2010-10-27
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] 絡み目の色付きTuraev-Viro不変量と位相的場の理論2010
- Author(s)
  古宇田悠哉
- Organizer
  数学専攻談話会
- Place of Presentation
  東北大学
- Year and Date
  2010-04-12
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] On the Reidemeister-Turaev torsion of standard Spin$^c$ structures on Seifert fibered 3-manifolds2010
- Author(s)
  Yuya Koda
- Organizer
  京都大学数理解析研究所合宿型セミナー"Twisted to pological invariants and topology of low-dimensional manifolds"
- Place of Presentation
  あきた白神体験センター
- Year and Date
  2010-09-15
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Quotients of disk complexes by Goeritz group actions2010
- Author(s)
  古宇田悠哉
- Organizer
  研究会「結び目と3次元多様体」
- Place of Presentation
  横浜市
- Year and Date
  2010-03-18
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Tunnel complexes of 3-manifolds2009
- Author(s)
  古宇田悠哉
- Organizer
  早稲田大学教育学部トポロジーセミナー
- Place of Presentation
  東京都
- Year and Date
  2009-06-13
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Quotients of disk complexes by Goeritz group actions2009
- Author(s)
  古宇田悠哉
- Organizer
  東北大学幾何セミナー
- Place of Presentation
  仙台市
- Year and Date
  2009-11-24
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] 3次元多様体のトンネル複体について2009
- Author(s)
  古宇田悠哉
- Organizer
  研究会「ハンドル体結び目とその周辺II」
- Place of Presentation
  大阪市
- Year and Date
  2009-06-20
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Tunnel complexes of 3-manifolds2009
- Author(s)
  古宇田悠哉
- Organizer
  日大トポロジーセミナー
- Place of Presentation
  東京都
- Year and Date
  2009-07-22
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Tunnel complexes of3-manifolds, Workshop "Simplicial Complexes Arising in Low-Dimensional Topology"2009
- Author(s)
  Yuya Koda
- Organizer
  東京工業大学
- Place of Presentation
  東京
- Year and Date
  2009-07-03
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Quotients of disk complexes by Goeritz group actions2009
- Author(s)
  古宇田悠哉
- Organizer
  東北大学幾何セミナー, 東北大学
- Place of Presentation
  仙台
- Year and Date
  2009-11-24
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] 3次元多様体のトンネル複体について2009
- Author(s)
  古宇田悠哉
- Organizer
  研究会「ハンドル体結び目とその周辺II」,大阪市立大学
- Place of Presentation
  大阪
- Year and Date
  2009-06-20
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Multiple disk complexes and Goeritz groups2009
- Author(s)
  古宇田悠哉
- Organizer
  研究集会「Graph と3次元多様体の研究」
- Place of Presentation
  小田原市
- Year and Date
  2009-10-28
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Tunnel complexes of 3-manifolds2009
- Author(s)
  古宇田悠哉
- Organizer
  Workshop "Simplicial Complexes Arising in Low-Dimensional Topology"
- Place of Presentation
  横浜市
- Year and Date
  2009-07-03
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Colored Turaev-Viro invariants of twisted double-series and cable-series in lens spaces,「The first KOOK-TAPU Joint Seminar (TOP Seminar) on Knot Theory and Related Topics」2009
- Author(s)
  Yuya Koda
- Organizer
  研究集会,大阪市立大学
- Place of Presentation
  大阪
- Year and Date
  2009-08-19
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] Colored Turaev-Viro invariants of twisted double-series and cable-series in lens spaces2009
- Author(s)
  古宇田悠哉
- Organizer
  研究集会「The first KOOK-TAPU Joint Seminar(TOP Seminar)on Knot Theory and Related Topics」
- Place of Presentation
  大阪市
- Year and Date
  2009-08-19
- Data Source
  KAKENHI-PROJECT-21740045
[Presentation] 3-manifold theory via branched spines2008
- Author(s)
  古宇田悠哉
- Organizer
  Winter Workshop on Low Dimensional Topology and its Ramifications
- Place of Presentation
  大阪市立大学
- Year and Date
  2008-02-15
- Data Source
  KAKENHI-PROJECT-05J08136
[Presentation] The Reidemeister-Turaev torsion of canonical Spin$^c$ structures2007
- Author(s)
  古宇田悠哉
- Organizer
  研究集会「Graphと3次元多様体の研究」
- Place of Presentation
  東洋大学箱根保養所
- Year and Date
  2007-10-24
- Data Source
  KAKENHI-PROJECT-05J08136
[Presentation] Construction of spines via(1,1)-knots2007
- Author(s)
  古宇田悠哉
- Organizer
  上智トポロジー研究集会
- Place of Presentation
  上智大学
- Year and Date
  2007-12-27
- Data Source
  KAKENHI-PROJECT-05J08136
[Presentation] Branched spines and invariants of 3-manifold2007
- Author(s)
  古宇田悠哉
- Organizer
  21世紀COEプログラム「慶應義塾大学-大阪大学連携若手セミナー」
- Place of Presentation
  慶應義塾大学
- Year and Date
  2007-07-21
- Data Source
  KAKENHI-PROJECT-05J08136
[Presentation] The Reidemeister-Turaev torsion of canonical Spin$^c$ structures2007
- Author(s)
  Yuya Koda
- Organizer
  Yonsei-Keio Joint Workshop on Mathematical Sciences
- Place of Presentation
  慶應義塾大学
- Year and Date
  2007-12-13
- Data Source
  KAKENHI-PROJECT-05J08136
[Presentation] Stable maps and branched shadows of 3-manifolds
- Author(s)
  古宇田悠哉
- Organizer
  研究集会「Graphと3次元多様体の研究」
- Place of Presentation
  東洋大学箱根保養所
- Year and Date
  2014-10-21 – 2014-10-22
- Invited
- Data Source
  KAKENHI-PROJECT-26800028
[]

1. Sakuma Makoto (30178602)

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Koda Yuya 古宇田 悠哉

KODA Yuya 古宇田 悠哉

古宇田 悠哉 コウダ ユウヤ

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結び目のトポロジーとその高分子科学への応用の研究

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3次元トポロジーに由来する写像類群の部分群の構造解明Principal Investigator

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Mathematical innovations woven by singularity theory and geometric topology

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Research on differential and geometric structures of 3- and 4-manifolds with polyhedraPrincipal Investigator

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Geometric structures and combinatorial structures of 3-dimensional manifolds

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Research on shadow complexities and geometric structures of 3-manifoldsPrincipal Investigator

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Geometric structures and combinaorial structures of 3-manifolds

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The mapping class groups of Heegaard splittingsPrincipal Investigator

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3-manifold invariants as viewed from triangulationsPrincipal Investigator

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種数2の向き付け可能閉三次元多様体の位相幾何学的分類と幾何構造についてPrincipal Investigator

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[Journal Article] The Goeritz groups of (1,1)-decompositions2025

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[Journal Article] Divides and hyperbolic volumes2024

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[Journal Article] Homotopy classification of knotted defects in ordered media2024

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Koda Yuya 古宇田悠哉

KODA Yuya 古宇田悠哉

古宇田悠哉コウダユウヤ