• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Research on Hempel distances of 3-manifolds by using the detailed properties of the curve complex

Research Project

Project/Area Number 15H06284
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Geometry
Research InstitutionAichi University of Education

Principal Investigator

Ido Ayako  愛知教育大学, 教育学部, 助教 (00759532)

Research Collaborator KOBAYASHI Tsuyoshi  
JANG Yeonhee  
Project Period (FY) 2015-08-28 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords3次元多様体 / Heegaard分解 / ヘンペル距離 / 曲線複体 / 3次元多様体 / Hempel距離 / ヒーガード分解
Outline of Final Research Achievements

In this research, we improved the techniques to construct geodesics in the curve complex. In the process, we introduced a new concept on Heegaard splitting, called "keen", and showed that there exists a keen Heegaard splitting with Hempel distance n for any integer n>1. Moreover, we expanded this concept to bridge splittings.

Academic Significance and Societal Importance of the Research Achievements

曲線複体は3次元多様体,クライン群, 写像類群,タイヒミュラー空間の研究などに幅広く活用されている.特に最近はHeegaard分解に限らず,多くの分野の懸案が曲線複体の概念を用いた手法を利用することにより解決されている.従来とは異なる,細密な幾何学の観点から曲線複体を研究することで得られた本研究の成果は,ヒーガード分解に限らず,関連する他の分野にも新たな展開をもたらすことが期待される.

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (4 results)

All 2018 2015

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

  • [Journal Article] On Keen Heegaard splittings2018

    • Author(s)
      Ayako Ido, Yeonhee Jang and Tsuyoshi Kobayashi
    • Journal Title

      Advanced Studies in Pure Mathematics

      Volume: 78 Pages: 293-311

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] An Estimate Of Hempel Distance For Bridge Spheres2015

    • Author(s)
      Ayako Ido
    • Journal Title

      Bulletin of the Korean Mathematical Society

      Volume: 52, No. 3 Issue: 3 Pages: 735-740

    • DOI

      10.4134/bkms.2015.52.3.735

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Bridge splittings of links with distance exactly n2015

    • Author(s)
      Ayako Ido, Yeonhee Jang and Tsuyoshi Kobayashi
    • Journal Title

      Topology and its Appl.

      Volume: 196 Pages: 608-617

    • DOI

      10.1016/j.topol.2015.05.028

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Hempel 距離の実現問題について2018

    • Author(s)
      井戸絢子
    • Organizer
      奈良女子大学トポロジーセミナー
    • Related Report
      2018 Annual Research Report
    • Invited

URL: 

Published: 2015-08-26   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi