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Study on quasi-Frobenius rings based on the Faith conjecture

Research Project

Project/Area Number 26400047
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Algebra
Research InstitutionYamaguchi University

Principal Investigator

Oshiro Kiyoichi  山口大学, その他部局等(理学), 名誉教授 (90034727)

Co-Investigator(Kenkyū-buntansha) 小池 寿俊  沖縄工業高等専門学校, 総合科学科, 教授 (20225337)
菊政 勲  山口大学, 大学院創成科学研究科, 教授 (70234200)
Co-Investigator(Renkei-kenkyūsha) BABA Yositomo  大阪教育大学, 教育学部, 教授 (10201724)
YAMAURA Kota  山梨大学, 医学工学総合研究部, 助教 (60633245)
Project Period (FY) 2014-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsアルチン環 / QF-環 / Faith 予想 / Complex ring / Quaternion ring / Octonion ring / Quaternion / QF-ring / Faith conjecture / Quaternion / Octonion / 環論 / 両側ベクトル空間 / Quaternion 環 / Octonion 環 / 加群論 / Octonion 環
Outline of Final Research Achievements

In 1966, Osofsky showed that a right and left self-injective perfect ring is a quasi-Frobenius ring, and raised the problem whether this is true or not for one sided selfinjective ring. In 1972, in his book " Algebra II",Faith conjectured in the negative for this problem. In 1993, Baba-Oshiro showed that, for an indecomposable projective module over a semiprimary ring, right injectivity is equivalent to simple injectivity. Using this result, we studied Faith conjecture. We could showed that Faith conjecture is translated to a problem whether there exist division ring D and a two-sided (D,D)-space V = DxD for which V is isomorphic to its dual space. Using this result, we obtained several results which improve the study of Faith conjecture. From the study of division ring D, we studied Hamilto's quaternion ring H(D) and obtained several fundamental results. For commutative field F, H(F) has been studied in algebraic number theory. We studied the relation-ships between H(D) and H(F).

Report

(5 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (16 results)

All 2018 2017 2016 2015 2014 Other

All Int'l Joint Research (1 results) Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Acknowledgement Compliant: 3 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Int'l Joint Research] Sungkyunkwan University(韓国)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Complex Rings, Quaternion Rings and Octonion Rings2018

    • Author(s)
      菊政勲
    • Journal Title

      Proceedings of the 50th Symposium on Ring Theory and Representation Theory

      Volume: 50 Pages: 74-83

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Quaternion rings and Octonion rings2017

    • Author(s)
      GangYong Lee ・大城紀代市
    • Journal Title

      Fronties Mathematics in China

      Volume: Vol 12 Pages: 143-155

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Recent development of the Faith conjecture2016

    • Author(s)
      小池寿俊・大城紀代市
    • Journal Title

      Fronties Mathematics in China

      Volume: Vol 11 Pages: 933-947

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] On direct projective H-supplement modules2016

    • Author(s)
      上村英雄・菊政 勲・倉富要輔
    • Journal Title

      Communication in Algebra

      Volume: Vol 44 Pages: 5299-5308

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Recent Development of the Faith Conjecture2016

    • Author(s)
      小池寿俊・大城紀代市
    • Journal Title

      Proceedings of the 7th China-Japan-Korea International Symposium on Ring Theory

      Volume: 印刷中

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Quaternion Rings and Octonion rings2016

    • Author(s)
      GangYong Lee ・大城紀代市
    • Journal Title

      Proceedings of China-Japan-Korea International Symposium on Ring Theory

      Volume: 印刷中

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] A characterization of the class of Harada rings2015

    • Author(s)
      小池寿俊
    • Journal Title

      Proceeding of the 47th Symmposium on Ring Theory and Represenntation Theory

      Volume: 47巻 Pages: 93-99

    • Related Report
      2014 Research-status Report
  • [Journal Article] Higher APR tilting preserve n-representation infinitenessTilting theory for one dimensionalhypersurfaces2015

    • Author(s)
      鈴木裕也・山浦浩太
    • Journal Title

      arXiv

      Volume: 印刷中

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Journal Article] Global dimension of Harada rings and serial rings2014

    • Author(s)
      小池寿俊
    • Journal Title

      Journal of Algebra and Its applications

      Volume: 1巻 Pages: 1-13

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Presentation] Complex Rings, Quaternion Rings and Octonion Rings2018

    • Author(s)
      大城紀代市
    • Organizer
      The 50th Symposium on Ring and Representation Theory
    • Related Report
      2017 Annual Research Report
  • [Presentation] On direct projective H-supplemented modules2016

    • Author(s)
      上村英男・菊政勲・倉富要輔
    • Organizer
      日本数学会年会
    • Place of Presentation
      筑波大学(茨城県つくば市)
    • Year and Date
      2016-03-16
    • Related Report
      2015 Research-status Report
  • [Presentation] Quaternion Rings and Octonion Rings2015

    • Author(s)
      大城紀代市
    • Organizer
      The 7th China-Japan-Korea International Symposium on Ring Theory
    • Place of Presentation
      中国杭州大学(中国杭州市)
    • Year and Date
      2015-07-02
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 有限三角拡大の自己双対性2014

    • Author(s)
      小池寿俊
    • Organizer
      日本数学会周期総合分科会
    • Place of Presentation
      広島大学、西条市
    • Year and Date
      2014-09-27
    • Related Report
      2014 Research-status Report
  • [Presentation] A characterization of Harada rings and serial rings2014

    • Author(s)
      小池寿俊
    • Organizer
      第47回環論および表現論シンポジウム
    • Place of Presentation
      大阪市立大学、大阪市
    • Year and Date
      2014-09-15
    • Related Report
      2014 Research-status Report
  • [Presentation] Tilting theory for one dimensional hypersurfaces2014

    • Author(s)
      山浦浩太(連携研究者)
    • Organizer
      Advances in Representation Theory of Algebras
    • Place of Presentation
      Canada Montreal
    • Year and Date
      2014-06-20
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2022-02-07  

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