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曲面の写像類群と3次元多様体の研究

Research Project

Project/Area Number 05640088
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Geometry
Research InstitutionUniversity of Tsukuba

Principal Investigator

金戸 武司  筑波大学, 数学系, 講師 (70107340)

Co-Investigator(Kenkyū-buntansha) 江田 勝哉  筑波大学, 数学系, 助教授 (90015826)
星野 光男  筑波大学, 数学系, 助手 (90181495)
増田 哲也  筑波大学, 数学系, 講師 (70202314)
相山 玲子  筑波大学, 数学系, 助手 (20222466)
酒井 克郎  筑波大学, 数学系, 講師 (50036084)
Project Period (FY) 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1993: ¥2,000,000 (Direct Cost: ¥2,000,000)
Keywords曲面 / 自己同相写像 / 写像類群 / 双曲的構造 / 3次元多様体 / Heegaard分解
Research Abstract

研究代表者及び分担者は曲面の写像類群の研究を通して3次元多様体の位相的性質を明らかにするため,特に曲面上の同相写像を円周S^1上の同相写像に帰着させるNielsen-Thurstonのideaに基づき,交付申請書の研究目的・実施計画に沿って研究を進め以下の成果を得た。
1.研究目的(1)について。種数2以上の曲面Σ上の双曲的普遍被覆写像P:1H^2→Σの被覆変換群Γは,1H^2(双曲平面)を単位円板モデルとするとき,単位円周S^1上にも作用しているとみなせる。このとき,S^1上の同相写像fがΣ上の同相写像に対応するための必要十分条件はf^<-1>Γf=Γである。
2.研究目的(2)について。Σ上の双曲的構造を定めるΓ及びP:1H^2→γに関し,正多角形を基本領域とするもので,従来知られているΓと異なり,多くの良い対称性をもつΓを発見した。これは研究目的(2)の方向での今後の研究に大いに寄与することが期待できる。
3.研究目的(3)について。VをΣを境界にもつ3次元ハンドル体とする。V上の同相写像は境界Σ上の同相写像を引き起し,更にS^1上の同相写像に対応する。逆はそれぞれの段階で一般には対応しない。S^1上の同相写像がV上の同相写像に対応するための必要十分条件を上記1と類似の形で得た。これは研究目的(3)を進める上で重要な役割を果す基本的な結果である。
代表者金戸は上記1,2,3の主要部分に,分担者はそれぞれの専門を活した役割分担に基づき,主として,中川,保科,酒井,横井,宮下,増田,笠井,星野,柴田は1に,相山は2に,高橋は3に,本橋,江田,坪井,塚田は研究目的遂行の戦略にそれぞれ側面から有益な貢献をした。又,各分担者はこの研究に関連して,それぞれの専門分野における多くの研究成果(11.研究発表欄(裏面)参照)を得た。

Report

(1 results)
  • 1993 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Bao-Lin Guo(酒井克郎と共著): "Hyperspaces of CW-comlexes" Fund.Math.143. 23-40 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Katsuro Sakai: "A Q^∞-manifold topdogy of the space of Lipschitz maps" Topology Appl.53. 7-18 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Nguyan To Nhu(酒井克郎と共著): "The compact neighborhood extension property and local equi-connectedness" Proc.Amer.Math.Soc.(in press).

    • Related Report
      1993 Annual Research Report
  • [Publications] Katsuro Sakai: "All autohomeomorphisms of connected Menger manifolds are stable" Proc.Amer.Math.Soc.(to appear).

    • Related Report
      1993 Annual Research Report
  • [Publications] Katsuro Sakai: "Free actions of zero-dimensional compact groups on Menger manifolds" Proc.Amer.Math.Soc.(in press).

    • Related Report
      1993 Annual Research Report
  • [Publications] Akira Koyama(横井勝弥と共著): "A unified approach of characterizations and resolutions for cohomological dimension modulo P" Tsukuba J.Math.(to appear).

    • Related Report
      1993 Annual Research Report
  • [Publications] Reiko Aiyama: "The generalized Gauss map of a space-like submanifold with parallel mean curvature vector in a pseudo-Euclidean space" Japanese J.Math.20(No.1)(to appear). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] Reiko Aiyama: "Compact space-like m-submanifolds in a pseudo-Riemennias sphere S^<m+p>_p(C)" Tokyo Journal Math.18(No.1)(to appear).

    • Related Report
      1993 Annual Research Report
  • [Publications] Tetsuya Masuda(共著): "A von Neu mann algebra frame work for the duality of the quantum groups" Publ.RIMS Kyoto Univ.(to appear).

    • Related Report
      1993 Annual Research Report
  • [Publications] Tomoyuki Kakei(増田哲也と共著): "Spectrum of an operator appears in the quantum SU(II) group" Quantum and Non-commutative analysis,Math.Phys.studies(Kluwer Academic Publishers). 16. 253-261 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Tetsuya Masuda(共著): "Algebras of guantum groups as quantized Poisson manifolds" Proc.of the Workshop on Geometry and its Appl.(World Scientific). 109-120 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Mitsuo Hoshino: "Noetherian rings of self-injective dimension two" Comm.Algera. 21. 1071-1094 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Hideto Asashiba(星野光男と共著): "Bilinea maps which define local algebras with trivial Hochschild cohomology" Canad.Math.Soc.Conf.Proc.14. 15-28 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Mitsuo Hoshino: "Vanishing of Hochchild cohomologies for local rings with embedding dimension two" Canad.Math.Bull.(to appear).

    • Related Report
      1993 Annual Research Report
  • [Publications] Katsuya Eda(共著): "Abelian groups of continuous functions and their duals" Topology Appl.53. 131-151 (1993)

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      1993 Annual Research Report
  • [Publications] Katsuya Eda(共著): "Prime spaces in free topological groups" Topology Appl.(to appear).

    • Related Report
      1993 Annual Research Report
  • [Publications] Katsuya Eda(共著): "The Dugundji extension theorem and extension degree" Coll.Math.(to appear).

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      1993 Annual Research Report
  • [Publications] Moto-o Takahashi: "Non-triviality of certain finitely presented groups" Tsukuba J.Math. (to appear).

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      1993 Annual Research Report
  • [Publications] Akito Tsuboi: "Large indiscernible sets of a structure" Kobe J.Math.10. 173-178 (1993)

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      1993 Annual Research Report
  • [Publications] Hirotaka Kikyo(坪井明人と共著): "On reduction properties" J.Symbolic Logic. (to appear).

    • Related Report
      1993 Annual Research Report
  • [Publications] Nobutaka Tsukada: "Constructions of complete metric spaces and compact Hausdorff spaces which are not Baire spaces" Tsukuba J.Math.17. 159-167 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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