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Study of group actions on manifolds by psedo-inverse limit systems of equivariant framed maps

Research Project

Project/Area Number 18K03278
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

MORIMOTO Masaharu  岡山大学, 自然科学研究科, 特命教授 (30166441)

Co-Investigator(Kenkyū-buntansha) 早坂 太  岡山大学, 環境生命科学研究科, 准教授 (20409460)
Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords多様体上の群作用 / 枠付き同変写像 / 同変手術 / 球面上の群作用 / 滑らかな多様体 / 滑らかな群作用 / 球面上の変換群 / 同変コボルディズムの擬逆極限系 / 鏡映手術理論 / 同変手術類群 / 部分群のなす Hasse diagram / one fixed point action / 5次の交代群 / 5次の対称群 / 変換群論 / 同変手術理論 / one-fixed-point 作用 / k-pseudofree action / Smith 問題 / 擬逆極限 / 不動点集合 / ポントリャーギン構成 / 横断正則 / 変換群 / 同変多様体 / 同変枠付き写像 / 擬逆極限系
Outline of Final Research Achievements

Let G be a finite group, A a set of subgroups of G, and B the set of subgroups not belonging to A. We say that a G-action on Z is B-free if the L-fixed-point set of Z coincides with the G-fixed-point set of Z. We consider pseudo-inverse-limit systems F_M : W_M -> Ix Y, where M runs over A, between a G-map f : X -> Y and id : Y -> Y. Choosing a suitalbe pseudo-inverse-limit system and performing G-surgeries, we would discover new G-actions on the underlying manifold of Y. Studying this problem, we could determine the dimension of spheres S with B-free G-action such that S has exactly one G-fixed point for groups: Alternating Groups A_5, A_6 (degree 5, 6), Symmetric Group S_5 (degree 5), Double Covering Groups SL(2, 5) of A_5 and TL(2, 5) of S_5, and etc.

Academic Significance and Societal Importance of the Research Achievements

有限群 G が多様体 X, Y に作用している状況で,G-写像 f : X -> Y を同変手術により微分同相写像にホモトピックな f' : X' -> Y に変形する問題は難しい問題である.特に,ある部分群 H に対し X のH-不動点集合の次元が 3, 4 となる場合には極めて難しいい問題である.本課題研究では f と恒等写像 id の間の枠付きM-コボルディズム F_M : W_M -> I x Y(M を A 上で動かす)の擬逆極限系をうまく選んでこの困難さを克服する研究を行い,うまい選択方法を得ることができた.ここに学術的意義がある.

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (22 results)

All 2023 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 5 results) Presentation (11 results) (of which Int'l Joint Research: 5 results,  Invited: 11 results) Remarks (3 results)

  • [Int'l Joint Research] Adam Mickiewicz University(ポーランド)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Adam Mickiewicz University(ポーランド)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Adam Mickiewicz University(ポーランド)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Appendix to P. Mizerka's Theorem2023

    • Author(s)
      Masaharu Morimoto
    • Journal Title

      Osaka Journal of Mathematics

      Volume: vol.60, no.2

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Construction of one-fixed-point actions on spheres of nonsolvable groups I2023

    • Author(s)
      Masaharu Morimoto
    • Journal Title

      Osaka Journal of Mathematics

      Volume: vol.60, no.3

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spheres not admitting smooth odd-fixed-point actions of S_5 and SL(2, 5)2020

    • Author(s)
      MORIMOTO, Masaharu, TAMURA, Shunsuke
    • Journal Title

      Osaka Journal of Mathematics

      Volume: 57

    • NAID

      120006781484

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Smooth odd fixed point actions on Z_2-homology spheres, Geometry, Algebra and Combinatorics in Transformation group theory2018

    • Author(s)
      Masaharu Morimoto
    • Journal Title

      RIMS Kokyuroku

      Volume: 2098

    • Related Report
      2018 Research-status Report
    • Open Access
  • [Journal Article] The inverse limit of the Burnside ring for a family of subgroups of a finite group2018

    • Author(s)
      Yasuhiro Hara, Masaharu Morimoto
    • Journal Title

      Hokkaido Mathematical Journal

      Volume: 47

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Review of Reflection Method of G-Framed Maps2022

    • Author(s)
      森本 雅治
    • Organizer
      第48回変換群論シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] One-fixed-point actions on spheres of extensions of A_5 and S_52022

    • Author(s)
      森本雅治
    • Organizer
      代数的位相幾何学の軌跡と展望
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Equivariant surgery and dimension conditions2021

    • Author(s)
      Masaharu Morimoto
    • Organizer
      Conference celebrating the 70th birthday of Prof. Krzysztof Pawalowski
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] One-fixed-point 3-pseudofree effective actions on spheres2021

    • Author(s)
      Masaharu Morimoto
    • Organizer
      Transformation Group Theory: The path we have walked along, and the way to progress
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Equivariant surgery theory revisited2020

    • Author(s)
      MORIMOTO, Masaharu
    • Organizer
      変換群論研究集会(大阪大学)
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Construction of exotic actions on spheres of finite groups2019

    • Author(s)
      MORIMOTO, Masaharu
    • Organizer
      The 46th Symposium on Transformation Groups
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Lecture on One-Fixed-Point Actions of S_5 on S^n2019

    • Author(s)
      MORIMOTO, Masaharu
    • Organizer
      Group Action Forum Workshop, Poznan
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Remarks on smooth actions on spheres2018

    • Author(s)
      Masaharu Morimoto
    • Organizer
      Joint Meeting of UMI-SIMAI-PTM
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Translation of the induction theory of Mackey functors into Algebraic-Differential Topology2018

    • Author(s)
      Masaharu Morimoto
    • Organizer
      The 16th Symposium on Algebraic Curves
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] On G-actions with finite fixed points on spheres2018

    • Author(s)
      Masaharu Morimoto, Kohei Seita
    • Organizer
      The 45th Symposium on Transformation Groups
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Smooth odd fixed point actions on Z_2-homology spheres2018

    • Author(s)
      Masaharu Morimoto
    • Organizer
      変換群論における幾何・代数・組み合わせ論
    • Related Report
      2018 Research-status Report
    • Invited
  • [Remarks] Home Page of Masaharu Morimoto

    • URL

      http://www.mtds.okayama-u.ac.jp/faculty_members/morimoto/

    • Related Report
      2021 Research-status Report
  • [Remarks] Welcome to My Home Page Masaharu MORIMOTO

    • URL

      http://www.mtds.okayama-u.ac.jp/faculty_members/morimoto/

    • Related Report
      2020 Research-status Report
  • [Remarks] Published Papers Masaharu Morimoto

    • URL

      http://www.ems.okayama-u.ac.jp/appl/morimoto/publmme.html

    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2024-01-30  

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