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整環の表現論

Research Project

Project/Area Number 15740022
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Algebra
Research InstitutionNagoya University (2005)
University of Hyogo (2004)
Himeji Institute of Technology (2003)

Principal Investigator

伊山 修  名古屋大学, 大学院・多元数理科学研究科, 助教授 (70347532)

Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2005: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2004: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2003: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywords高次Auslander-Reiten理論 / 非可換クレパント解消 / 極大直交部分圏 / 傾斜加群 / mutation / クラスター代数 / McKay対応 / Seidel-Thomastwist / Auslander-Reiten理論 / 概分裂完全列 / Auslander対応 / Fomin-Zelenvinsky mutation / Bondal-Orlov予想 / 非可換crepant解消 / 表現次元 / 行列問題 / tame表現型 / special biserial代数 / 関手的有限部分圏 / Rejective部分圏 / Rejective鎖 / 分解次元
Research Abstract

本年度はAuslander-Reiten理論の高次元版の研究を昨年に引き続き続行した。
I.Reitenとの共同研究において、Calabi-Yau代数の概念を導入し、それを特徴付けることに成功した。またCalabi-Yau代数上の傾斜加群を研究し、2次元および3次元の場合に、多くの興味深い成果を得た。これは現在も続行中であり、2次元の場合はMcKay対応を介してSeidel-Thomasのtwist関手と対応するが、以下は3次元の場合のみ述べる。d次元特殊線形群の有限部分群$G$に付随した捩れ群環$S*G$($S$はd変数べき級数環)上の傾斜加群と、商特異点$S^G$の非可換クレパント解消の間の一対一対応を発見した。これはより一般の3次元正規Gorenstein特異点上の(加群として)有限生成非可換代数においても成立する。特にこの対応を用いることにより、Van den Berghの提唱した、Bondal-Orlov予想の非可換版を3次元の場合に完全に解決することに成功した。昨年の結果では、Cohen-Macaulay孤立特異点という強い制限が必要であったため、大きな前進といえる。また上記の対応の応用として、$S^G$上のrigid reflexive群を、非可換クレパント解消の直和因子として特徴付けることに成功した。とくに$S^G$上のrigid reflexive加群は、直和因子が高々g(=Gの規約表現の個数)であり、また必ずg個まで拡張でき、そのときは非可換クレパント解消となることが従う。
また吉野雄二氏との共同研究で、三角圏における極大直行部分圏の概念を導入し、そこでもやはりAuslander-Reiten理論の高次元版とみなされる現象が存在することを観察した。特に高次Auslander-Reiten列の存在を示し、それを用いた極大直行部分圏にたいするmutationと呼ばれる操作が可能であることを示した。これはReitenとの共同研究とも深くかかわっており、現在も進展中である。

Report

(3 results)
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (28 results)

All 2005 2004 Other

All Journal Article (15 results) Publications (13 results)

  • [Journal Article] The relationship between homological properties and representation theoretic realization of artin algebras2005

    • Author(s)
      Osamu Iyama
    • Journal Title

      Trans.Amer.Math.Soc. 357, no 2

      Pages: 709-734

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Quadratic bimodules and quadratic orders2005

    • Author(s)
      Osamu Iyama
    • Journal Title

      J.Algebra 286, no 2

      Pages: 247-306

    • Related Report
      2005 Annual Research Report
  • [Journal Article] $tau$-categories I : Ladders2005

    • Author(s)
      Osamu Iyama
    • Journal Title

      Algebr.Represent.Theory 8, no 3

      Pages: 297-321

    • Related Report
      2005 Annual Research Report
  • [Journal Article] $tau$-categories II : Nakayama pairs and Rejective subcategories2005

    • Author(s)
      Osamu Iyama
    • Journal Title

      Algebr.Represent.Theory 8, no 4

      Pages: 449-477

    • Related Report
      2005 Annual Research Report
  • [Journal Article] $tau$-categories III : Auslander orders and Auslander-Reiten quivers2005

    • Author(s)
      Osamu Iyama
    • Journal Title

      Algebr.Represent.Theory 8, no 5

      Pages: 601-619

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The relationship between homological properties and representation theoretic realization of actin algebras2005

    • Author(s)
      Osamu Iyama
    • Journal Title

      Transactions in American Mathematical Society 357・2

      Pages: 709-734

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Quadratic bimodules and Quadratic orders2005

    • Author(s)
      Osamu Iyama
    • Journal Title

      Journal of Algebra 286・2

      Pages: 247-306

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Higher dimensional Auslander-Reiten theory on maximal orthogonal subcategories2005

    • Author(s)
      Osamu Iyama
    • Journal Title

      Proceedings of the 37th Symposium on Ring Theory and Representation Theory

      Pages: 24-30

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Higher dimensional Auslander-Reiten theory on maximal orthogonal subcategories2005

    • Author(s)
      Osamu Iyama
    • Journal Title

      Proceedings of the 26th Symposium on Commutative Ring Theory

      Pages: 158-167

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Radical embeddings and representation dimension2004

    • Author(s)
      Osamu Iyama, K.Erdmann, T.Holm, J.Schroer
    • Journal Title

      Advances in Mathematics 185・1

      Pages: 159-177

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Representation dimension and Solomon zeta function2004

    • Author(s)
      Osamu Iyama
    • Journal Title

      Representations of finite dimensional algebras and related topics in Lie theory and geometry 40

      Pages: 45-64

    • Related Report
      2004 Annual Research Report
  • [Journal Article] On Hall algebras of hereditary orders2004

    • Author(s)
      Osamu Iyama
    • Journal Title

      Communications in Algebra 32・4

      Pages: 1571-1579

    • Related Report
      2004 Annual Research Report
  • [Journal Article] τ-Categories I : Ladders

    • Author(s)
      Osamu Iyama
    • Journal Title

      Algebras and Representation theory

      Pages: 1-25

    • Related Report
      2004 Annual Research Report
  • [Journal Article] τ-Categories II : Nakayama pairs and Rejective subcategories

    • Author(s)
      Osamu Iyama
    • Journal Title

      Algebras and Representation theory

      Pages: 1-28

    • Related Report
      2004 Annual Research Report
  • [Journal Article] τ-categories III : Auslander orders and Auslander-Reiten quivers

    • Author(s)
      Osamu Iyama
    • Journal Title

      Algebras and Representation theory

      Pages: 1-18

    • Related Report
      2004 Annual Research Report
  • [Publications] Osamu Iyama: "Finiteness of Representation dimension"Proceedings of American Mathematical Society. 131・4. 1011-1014 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama: "A proof of Solomon's second conjecture on local zeta function of orders"Journal of Algebra. 259・1. 119-126 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama: "Symmetry and duality on η-Governstein rings"Journal of Algebra. 269・2. 528-535 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama: "Representation dimension and Solomon zeta function"Representation of Finite dimensional Algebras and Related topics in Lie theory and Geometry. 45-64 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama: "τ-categories I : Ladders"Algebras and Representation theory. 1-25

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama: "τ-categories II : Nakayama pairs and Rejective subcategories"Algebras and Representation theory. 1-28

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama: "τ-categories III : Auslander orders and Auslander-Reiten quivers"Algebras and Representation theory. 1-18

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama: "On Hall algebras of hereditary orders"Communications in Algebra. 32・4. 1571-1579 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama, Thorsten Holm, Karin Erdmann, Jan Schroer: "Radical embeddings and representation dimension"Advances in Mathematics. 1-18

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama: "The relationship between homological properties and representation theoretic realization of artin algebras"Transactions of the American Mathematical Society. 1-28

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama: "Quadratic bimodules and quadratic orders"Journal of Algebra. 1-56

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama: "整理のRingel-Hall代数"第6回代数群と量子群の表現論研究集会報告集. 57-61 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Osamu Iyama: "Representation dimension of artin algebras"Proceedings of the 36th Symposium on Ring theory and Representation theory. 1-14

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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