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Koda Yuya  古宇田 悠哉

ORCIDConnect your ORCID iD *help
… 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
Affiliation (Current) 2025: 慶應義塾大学, 経済学部(日吉), 教授
Affiliation (based on the past Project Information) *help 2023 – 2024: 慶應義塾大学, 経済学部(日吉), 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
2014 – 2015: 広島大学, 理学(系)研究科(研究院), 准教授 … More
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 / スパイン / 3 次元多様体 / Heegaard 分解 / 3次元多様体 / 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 / 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 / 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 / 高分子 / トポロジー / 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 / 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 / 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 / Riley slice / 結び目理論 / 放物的生成系 / モノドロミー群 / 橋分解 / ザイフェルト曲面 / 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
  • Research Projects

    (10 results)
  • Research Products

    (140 results)
  • Co-Researchers

    (24 People)
  •  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
  •  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)
      2021 – 2025
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 11020:Geometry-related
    • Research Institution
      Ochanomizu 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
      作間 誠
    • 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

All 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 Other

All Journal Article Presentation Other

  • [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
  • [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
  • [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] 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] 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)
    # of Collaborated Projects: 2 results
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  • 2.  秋吉 宏尚 (80397611)
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  • 3.  谷山 公規 (10247207)
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  • 4.  石川 昌治 (10361784)
    # of Collaborated Projects: 2 results
    # of Collaborated Products: 2 results
  • 5.  小沢 誠 (50308160)
    # of Collaborated Projects: 2 results
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  • 6.  島田 伊知朗 (10235616)
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  • 7.  土井 英雄 (50197993)
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  • 8.  茂手木 公彦 (40219978)
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  • 9.  大山 淑之 (80223981)
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  • 10.  新國 亮 (00401878)
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  • 11.  三松 佳彦 (70190725)
    # of Collaborated Projects: 1 results
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  • 12.  佐伯 修 (30201510)
    # of Collaborated Projects: 1 results
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  • 13.  大本 亨 (20264400)
    # of Collaborated Projects: 1 results
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  • 14.  鎌田 聖一 (60254380)
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  • 15.  粕谷 直彦 (70757765)
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  • 16.  片長 敦子 (20373128)
    # of Collaborated Projects: 1 results
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  • 17.  下川 航也 (60312633)
    # of Collaborated Projects: 1 results
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  • 18.  河内 明夫 (00112524)
    # of Collaborated Projects: 1 results
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  • 19.  石原 海 (40634762)
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  • 20.  中江 康晴 (80506741)
    # of Collaborated Projects: 1 results
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  • 21.  CHO Sangbum
    # of Collaborated Projects: 1 results
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  • 22.  SEO Arim
    # of Collaborated Projects: 1 results
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  • 23.  直江 央寛
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    # of Collaborated Products: 1 results
  • 24.  広瀬 進
    # of Collaborated Projects: 0 results
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