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Interrelation between quantum and contact topology via braid group methods

Research Project

Project/Area Number 19K03490
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 11020:Geometry-related
Research InstitutionKyoto University

Principal Investigator

Ito Tetsuya  京都大学, 理学研究科, 教授 (00710790)

Co-Investigator(Kenkyū-buntansha) 大槻 知忠  京都大学, 数理解析研究所, 教授 (50223871)
Project Period (FY) 2019-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords正結び目 / 結び目不変量 / 接触幾何 / 三次元多様体 / 正組みひも / 組みひもサテライト / 結び目解消数 / 結び目 / 低次元トポロジー / 矯飾的手術 / 矯飾的交差 / 組みひも群 / オープンブック分解 / 量子トポロジー
Outline of Research at the Start

量子トポロジー・接触トポロジーともに現在活発に研究され、進展が著しい3次元のトポロジーの研究分野であるが、それぞれの分野の課題や未解決問題や目標は大きく異なり、二つの研究分野間の交流は活発とは言えない。近年、二つの分野に相互関連や応用があることを示唆する結果が得られており、二つの分野に密接な関連があることが期待される。このような現状を踏まえて、接触幾何の情報を量子不変量あるいはそれに関連した不変量から得ること、また逆に量子不変量に関連する情報を接触幾何の手法や情報から得ることを研究し、二つのトポロジーの分野の統合を目指す。

Outline of Final Research Achievements

We found relations between the positivities of knots, which are deeply related to contact geometry, and quantum invariants. We proved generalization of known properties of positive knots, like proeprties of HOMFLY polynomial of positive knots, or, found a correct generalizatino of positive knots that shares many properties as positive knots. Also, as byproducts, we were able to prove many applications to problemes in knots theory and low-dimensional topology, such as, relations among crossing number, braid index, and genus, or, cosmetic surgery or cosmetic crossings, fundamental groups of Dehn surgeries.

Academic Significance and Societal Importance of the Research Achievements

結び目理論において、正結び目と呼ばれる結びの交差が常に正(同じ方向で交差している)ものは古くから特別な性質を持つことが知られていた。近年では、これらの正結び目は接触幾何と呼ばれる幾何学的な構造と密接に関係することが認識され、正結び目は幾何的に興味深い対象であることがわかってきた。この研究では、この接触幾何の観点からの問題意識や手法を取り入れ、正結び目の研究を深め、正結び目の持つ新しい性質を見出すとともに、研究の副産物として結び目理論や低次元トポロジーの古典的な問題や有名な問題についての部分解答を与えるなどの応用を与えた。

Report

(7 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (33 results)

All 2024 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (24 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 24 results,  Open Access: 3 results) Presentation (7 results) (of which Int'l Joint Research: 6 results,  Invited: 6 results) Funded Workshop (1 results)

  • [Int'l Joint Research] Univerisity of Iowa(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Dehn filling and the knot group III: cyclic persistent subgroups2024

    • Author(s)
      Ito Tetsuya、Motegi Kimihiko、Teragaito Masakazu
    • Journal Title

      Bolet?n de la Sociedad Matem?tica Mexicana

      Volume: 30 Issue: 3

    • DOI

      10.1007/s40590-024-00674-9

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A note on orientation-reversing distance one surgeries on non-null-homologous knots2024

    • Author(s)
      Ito Tetsuya
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 152 Issue: 10 Pages: 4515-4519

    • DOI

      10.1090/proc/16964

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A remark on the finiteness of purely cosmetic surgeries2023

    • Author(s)
      Ito Tetsuya
    • Journal Title

      Algebraic & Geometric Topology

      Volume: 23 Issue: 5 Pages: 2213-2219

    • DOI

      10.2140/agt.2023.23.2213

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A note on knot fertility. II2023

    • Author(s)
      Ito T.
    • Journal Title

      Acta Mathematica Hungarica

      Volume: 169 Issue: 2 Pages: 553-561

    • DOI

      10.1007/s10474-023-01317-7

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Journal Article] On a group whose generalized torsion elements are torsion elements2023

    • Author(s)
      Ito Tetsuya
    • Journal Title

      Communications in Algebra

      Volume: 52 Issue: 3 Pages: 1271-1276

    • DOI

      10.1080/00927872.2023.2260485

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Journal Article] Applications of the Casson-Walker invariant to the knot complement and the cosmetic crossing conjectures2022

    • Author(s)
      Ito Tetsuya
    • Journal Title

      Geometriae Dedicata

      Volume: 216 Issue: 6

    • DOI

      10.1007/s10711-022-00722-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] A quantitative Birman?Menasco finiteness theorem and its application to crossing number2022

    • Author(s)
      Ito Tetsuya
    • Journal Title

      Journal of Topology

      Volume: 15 Issue: 4 Pages: 1794-1806

    • DOI

      10.1112/topo.12259

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] On homogeneous quasipositive links2022

    • Author(s)
      Ito Tetsuya
    • Journal Title

      Journal of Knot Theory and Its Ramifications

      Volume: 31 Issue: 12

    • DOI

      10.1142/s0218216522500808

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] A note on HOMFLY polynomial of positive braid links2022

    • Author(s)
      Ito Tetsuya
    • Journal Title

      International Journal of Mathematics

      Volume: 33 Issue: 04

    • DOI

      10.1142/s0129167x22500318

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Generalized torsion for hyperbolic 3‐manifold groups with arbitrary large rank2022

    • Author(s)
      Ito Tetsuya、Motegi Kimihiko、Teragaito Masakazu
    • Journal Title

      Bulletin of the London Mathematical Society

      Volume: - Issue: 3 Pages: 1203-1209

    • DOI

      10.1112/blms.12784

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] On constraints for knots to admit chirally cosmetic surgeries and their calculations2022

    • Author(s)
      Kazuhiro Ichihara, Tetsuya Ito and Toshio Saito
    • Journal Title

      Pacific Journal of Mathematics

      Volume: 321 Issue: 1 Pages: 167-191

    • DOI

      10.2140/pjm.2022.321.167

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] An obstruction of Gordian distance one and cosmetic crossings for genus one knots.2022

    • Author(s)
      Tetsuya Ito
    • Journal Title

      New York J. Math.

      Volume: 28

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cosmetic crossing conjecture for genus one knots with non-trivial Alexander polynomial.2022

    • Author(s)
      Tetsuya Ito
    • Journal Title

      Proc. Amer. Math. Soc.

      Volume: 150 Issue: 02 Pages: 871-876

    • DOI

      10.1090/proc/15654

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Chirally Cosmetic Surgeries and Casson Invariants2021

    • Author(s)
      ICHIHARA Kazuhiro、ITO Tetsuya、SAITO Toshio
    • Journal Title

      Tokyo Journal of Mathematics

      Volume: 44 Issue: -1 Pages: 1-24

    • DOI

      10.3836/tjm/1502179325

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A NOTE ON KNOT FERTILITY2021

    • Author(s)
      Tetsuya Ito
    • Journal Title

      Kyushu Journal of Mathematics

      Volume: 75 Issue: 2 Pages: 273-276

    • DOI

      10.2206/kyushujm.75.273

    • NAID

      130008101301

    • ISSN
      1340-6116, 1883-2032
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Generalized torsion and Dehn filling.2021

    • Author(s)
      Tetsuya Ito. Kimihiko Motegi, Masakazu Teragaito,
    • Journal Title

      Topology Appl.

      Volume: 301 Pages: 107515-107515

    • DOI

      10.1016/j.topol.2020.107515

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Flat plumbing basket and contact structure2021

    • Author(s)
      Ito Tetsuya、Tagami Keiji
    • Journal Title

      Journal of Knot Theory and Its Ramifications

      Volume: 30 Issue: 02 Pages: 2150010-2150010

    • DOI

      10.1142/s0218216521500103

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] A note on chirally cosmetic surgery on cable knots.2021

    • Author(s)
      Tetsuya Ito
    • Journal Title

      Canad. Math. Bull.

      Volume: 64 Issue: 1 Pages: 163-173

    • DOI

      10.4153/s0008439520000338

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mutation invariance for the zeroth coefficients of colored HOMFLY polynomial2020

    • Author(s)
      Tetsuya Ito
    • Journal Title

      Kodai Mathematical Journal

      Volume: 43 Issue: 1 Pages: 1-15

    • DOI

      10.2996/kmj/1584345685

    • NAID

      130007812096

    • ISSN
      0386-5991, 1881-5472
    • Year and Date
      2020-03-15
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] On LMO invariant constraints for cosmetic surgery and other surgery problems for knots in S^32020

    • Author(s)
      Tetsuya Ito
    • Journal Title

      Comm. Anal. Geom.

      Volume: 28 Issue: 2 Pages: 321-349

    • DOI

      10.4310/cag.2020.v28.n2.a4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] A NONDEGENERATE EXCHANGE MOVE ALWAYS PRODUCES INFINITELY MANY NONCONJUGATE BRAIDS2019

    • Author(s)
      ITO TETSUYA
    • Journal Title

      Nagoya Mathematical Journal

      Volume: - Pages: 1-4

    • DOI

      10.1017/nmj.2019.38

    • Related Report
      2021 Research-status Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nontrivial elements in a knot group which are trivialized by Dehn fillings2019

    • Author(s)
      Tetsuya Ito, Kimihiko Motegi and Masakazu Teragaito
    • Journal Title

      Int. Math. Res. Not. IMRN

      Volume: - Issue: 11 Pages: 8297-8321

    • DOI

      10.1093/imrn/rnz069

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Generalized torsion and decomposition of 3-manifolds2019

    • Author(s)
      Tetsuya Ito, Kimihiko Motegi, Masakazu Teragaito
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 印刷中 Issue: 11 Pages: 4999-5008

    • DOI

      10.1090/proc/14581

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Positivities of Knots and Links and the Defect of Bennequin Inequality2019

    • Author(s)
      Hamer Jesse、Ito Tetsuya、Kawamuro Keiko
    • Journal Title

      Experimental Mathematics

      Volume: - Issue: 1 Pages: 1-27

    • DOI

      10.1080/10586458.2019.1596848

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Generalized torsion elements as generalization of torsion elements2023

    • Author(s)
      Tetsuya Ito
    • Organizer
      Orderable groups
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Birman-Menasco finiteness theorem revisited2022

    • Author(s)
      Tetsuya Ito
    • Organizer
      Braids in Low-Dimensional Topology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Cosmetic crossing 予想の現状2021

    • Author(s)
      Tetsuya Ito
    • Organizer
      N-KOOKセミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] A quantitative Birman-Menasco finiteness theorem and its application to crossing number problems2021

    • Author(s)
      Tetsuya Ito
    • Organizer
      The 16th East Asian Conference on Geometric Topology
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Bennequin inequality and strongly quasipositive braids in annulus open books2020

    • Author(s)
      Tetsuya Ito
    • Organizer
      Mini-Symposium : Knot Theory on Okinawa
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Generalized torsion in 3-manifold groups and normal closures of slope elements2019

    • Author(s)
      Ito Tetsuya、Motegi Kimihiko、Teragaito Masakazu
    • Organizer
      Ordered Groups and Rigidity in Dynamics and Topology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Garside theory and braid group representations.2019

    • Author(s)
      Tetsuya Ito
    • Organizer
      Expansions, Lie Algebras, and Invariants
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Funded Workshop] The 15th East Asian Conference on Geometric Topology2020

    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2026-01-16  

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