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複素射影平面上の直線配置と絡み目のミルナー不変量の研究

Research Project

Project/Area Number 15F15732
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Research Field Geometry
Research InstitutionTokyo Gakugei University

Principal Investigator

田中 心 (2016-2017)  東京学芸大学, 教育学部, 准教授 (70448950)

安原 晃 (2015)  東京学芸大学, 教育学部, 教授 (60256625)

Co-Investigator(Kenkyū-buntansha) GUERVILLE BENOIT  東京学芸大学, 教育学部, 外国人特別研究員
Project Period (FY) 2015-10-09 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2017: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2016: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2015: ¥500,000 (Direct Cost: ¥500,000)
Keywords平面配置 / 複素射影平面 / ザリスキー対 / 絡み目不変量 / ミルナー不変量
Outline of Annual Research Achievements

本研究では,絡み目の不変量のアイデアを複素射影平面CP2内の直線配置の研究に応用して,直線配置の位相型を区別する新たな不変量を発見する事を目的とする.本年度は,主に次に上げる研究成果が得られた.これらの成果は,絡み目の不変量を応用した不変量を用いる事で得られた.

(1)実射影変面内の直線配置に関して,図形的に計算可能な絡み数の構成に成功した.これまでの,絡み数は,その計算をコンピューターに依存しなければならない複雑なものばかりであった.ここで構成した絡み数は,計算が簡易であるというばかりでなく,これまで3例しか知られていなかったザリスキー対に加えて,新たに10例のザリスキー対の構成に成功した.さらに,この結果は,今まで知られていなかった有理ザリスキー対の初めての例でもある.
(2)直線配置の絡み数の研究を進め,k-アルタル曲線(k ∈ {3, 4, 5, 6})に対してザリスキー対の存在を示した.(直線配置の研究においては,ザリスキー対と呼ばれる直線配置対の発見は,大変重要である.)
(3)上で用いた絡み数は,Shimada k-pletと呼ばれる直線配置を区別する事を示した.これらの2つの論文の結果を通して,絡み数が区別する直線配置の特徴が明らかになった.2つ目の結果を得る為に,これまでの絡み数を,代数的・幾何的に再構築し,代数的な計算方法を備えた分離数と関連付けた.
(4)基本群は,直線配置の組合せ的構造では,定まらない事を示した.これは,Falk氏とRandell氏の挙げた問題の解答を与えた事になる.また,ここで用いた証明は,Suciu氏の挙げた問題に否定的解答を与えた.

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (21 results)

All 2018 2017 2016

All Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (15 results) (of which Int'l Joint Research: 2 results,  Invited: 9 results)

  • [Journal Article] Fundamental Groups of Real Arrangements and Torsion in the Lower Central Series Quotients2018

    • Author(s)
      Bartolo Enrique Artal、Guerville-Balle Benoit、Viu-Sos Juan
    • Journal Title

      Experimental Mathematics

      Volume: - Issue: 1 Pages: 28-35

    • DOI

      10.1080/10586458.2018.1428131

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Configuraons of points and topology of real line arrangements2018

    • Author(s)
      Guerville-Balle Benoit、Viu-Sos Juan
    • Journal Title

      Mathemasche Annalen

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the topology of arrangements of a cubic and its inflectional tangents2017

    • Author(s)
      Bannai Shinzo、Guerville-Balle Benoit、Shirane Taketo、Tokunaga Hiro-o
    • Journal Title

      Proceedings of the Japan Academy, Series A, Mathematical Sciences

      Volume: 93 Issue: 6 Pages: 50-53

    • DOI

      10.3792/pjaa.93.50

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Non-homotopicity of the linking set of algebraic plane curves2017

    • Author(s)
      Guerville-Balle Benoit、Shirane Taketo
    • Journal Title

      Journal of Knot Theory and Its Ramifications

      Volume: 26 Issue: 13 Pages: 1750089-1750089

    • DOI

      10.1142/s0218216517500894

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] An arithmetic Zariski pair of line arrangements with non-isomorphic fundamental group2017

    • Author(s)
      E. Artal, J.I. Cogolludo-Agustin, B. Guerville-Balle, M. Marco-Buzunariz
    • Journal Title

      Revista de la Real Academia de Ciencias Exactas, Fisicas y Naturales. Serie A. Matematicas

      Volume: 印刷中

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Multiplicativity of the I-invariant and topology of glued arrangements2017

    • Author(s)
      B. Guerville-Balle
    • Journal Title

      Journal of Mathematical Society of Japan

      Volume: 印刷中

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Presentation] Configuration of points and topology of real line arrangements2017

    • Author(s)
      Benoit Guerville-Balle
    • Organizer
      Branched Coverings, Degenerations, and Related Topics 2017
    • Place of Presentation
      東北学院大学工学部多賀城キャンパス(宮城県多賀城市)
    • Year and Date
      2017-03-07
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Homotopy-equivalent Zariski pair of line arrangements2017

    • Author(s)
      Guerville-Balle Benoit
    • Organizer
      Tsuda University Topology Workshop
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Configuration of points and topology of real arrangements2017

    • Author(s)
      Guerville-Balle Benoit
    • Organizer
      Branched Coverings, Degenerations, and Related Topics 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Configuration of points and topology of real line arrangements2017

    • Author(s)
      Benoit Guerville-Balle
    • Organizer
      北海道大学セミナー
    • Place of Presentation
      北海道大学大学院理学研究院数学部門(北海道札幌市)
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] A linking invariant of algebraic curves2016

    • Author(s)
      Benoit Guerville-Balle
    • Organizer
      第63回トポロジーシンポジウム
    • Place of Presentation
      神戸大学出光佐三記念六甲台講堂(兵庫県神戸市)
    • Year and Date
      2016-07-05
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] A linking invariant for reducible curves2016

    • Author(s)
      Benoit Guerville-Balle
    • Organizer
      第 13 回 代数曲面ワークショップ at 高知
    • Place of Presentation
      高知工科大学, 永国寺キャンパス(高知県高知市)
    • Year and Date
      2016-07-02
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Linking invariant of plane curves2016

    • Author(s)
      Guerville-Balle, Benoit
    • Organizer
      Workshop on Hyperplane arrangements and Singularity theory
    • Place of Presentation
      北海道大学
    • Year and Date
      2016-03-22
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Linking invariant of line arrangements: The I-invariant2016

    • Author(s)
      Guerville-Balle, Benoit
    • Organizer
      AMS Sectional Meeting
    • Place of Presentation
      NY州立大学ストーニーブルック校,ストーニーブルック(アメリカ)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] Invariant d'enlacement des courbes algebriques2016

    • Author(s)
      Guerville-Balle, Benoit
    • Organizer
      Seminar of Geometry of singular spaces
    • Place of Presentation
      リール大学,リール(フランス)
    • Year and Date
      2016-03-08
    • Related Report
      2015 Annual Research Report
  • [Presentation] Invariant d'enlacement des courbes algebriques2016

    • Author(s)
      Guerville-Balle, Benoit
    • Organizer
      Seminar GT3
    • Place of Presentation
      ストラスブール大学,ストラスブール(フランス)
    • Year and Date
      2016-03-07
    • Related Report
      2015 Annual Research Report
  • [Presentation] Invariant d'enlacement des courbes algebriques2016

    • Author(s)
      Guerville-Balle, Benoit
    • Organizer
      Seminar of Topology
    • Place of Presentation
      フーリエ研究所,グルノーブル(フランス)
    • Year and Date
      2016-03-04
    • Related Report
      2015 Annual Research Report
  • [Presentation] Invariant d'enlacement des courbes algebriques2016

    • Author(s)
      Guerville-Balle, Benoit
    • Organizer
      Seminar Geometry and Dynamics Systems
    • Place of Presentation
      ブルゴーニュ大学,ブルゴーニュ(フランス)
    • Year and Date
      2016-03-03
    • Related Report
      2015 Annual Research Report
  • [Presentation] Linking invariant of plane curves2016

    • Author(s)
      Guerville-Balle, Benoit
    • Organizer
      2016 琉球結び目セミナー
    • Place of Presentation
      那覇市ぶんかテンブス館
    • Year and Date
      2016-02-20
    • Related Report
      2015 Annual Research Report
  • [Presentation] On the I-invariant2016

    • Author(s)
      Guerville-Balle, Benoit
    • Organizer
      第3回 代数幾何学研究集会‐宇部‐
    • Place of Presentation
      宇部工業高等専門学校
    • Year and Date
      2016-01-09
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Invariant d'enlacement des courbes algebriques2016

    • Author(s)
      Benoit Guerville-Balle
    • Organizer
      Seminar of Geometries
    • Place of Presentation
      アンジェ大学,フランス
    • Related Report
      2016 Annual Research Report
    • Invited

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Published: 2015-11-26   Modified: 2024-03-26  

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