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2014 Fiscal Year Annual Research Report

整環の表現論の新展開

Research Project

Project/Area Number 24340004
Research InstitutionNagoya University

Principal Investigator

伊山 修  名古屋大学, 多元数理科学研究科, 教授 (70347532)

Co-Investigator(Kenkyū-buntansha) 高橋 亮  名古屋大学, 多元数理科学研究科, 准教授 (40447719)
毛利 出  静岡大学, 理学(系)研究科(研究院), 教授 (50436903)
源 泰幸  大阪府立大学, 理学(系)研究科(研究院), 准教授 (50527885)
DEMONET Laurent  名古屋大学, 多元数理科学研究科, 特任准教授 (70646124)
Project Period (FY) 2012-04-01 – 2016-03-31
Keywords三角圏 / 傾対象 / 準傾退化 / Calabi-Yau退化 / 団圏 / τ rigid有限多元環 / 台τ傾加群 / Geigle-Lenzing完全交叉環
Outline of Annual Research Achievements

傾対象(tilting object)は三角圏を環の導来圏として実現する際に基本的であり、準傾対象(silting object)は傾対象を変異の観点から補完する。D. Yangとの共同研究(arXiv:1408.2678)で、準傾退化(silting reduction)を導入して基本的な性質を調べた。準傾退化は、三角圏Tとその前準傾対象(presilting object) Pからイデアル商として構成される新しい三角圏Uのことである。Calabi-Yau三角圏とそのrigid対象から新しい三角圏(Calabi-Yau退化)が構成されるが、準傾退化はその類似である。重要な性質として、UはVerdier商T/thick Pと一致すること、さらにUの準傾対象とPを直和因子に持つようなTの準傾対象が一対一に対応することが挙げられる。団理論で重要なAmiot-Guo-Kellerによる団圏(cluster category) CはCalabi-Yau三角圏の一例だが、これはGinzburg dg algebraの導来圏Tの特別なVerdier商であった。我々はTの準傾退化とCのCalabi-Yau退化が互換性を有することを、より自然な状況のもとで証明することに成功した。

L. Demonet, G. Jassoとの共同研究(arXiv:1503.00285)で、τ rigid加群を有限個しか持たないτ rigid有限多元環を調べた。τ rigid有限多元環は、任意のねじれ類が関手的有限であることで特徴づけられることを示した。さらに台τ傾加群のなす単体的複体が球面と同相であることを示した。
M. Herschend, H. Minamoto, S. OppermannとのGeigle-Lenzing完全交叉環に関する共同研究を継続し、成果をarXiv:1409.0668にて公開した。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

Geigle-Lenzing完全交叉環に関する論文が完成した。準傾退化に関する論文、およびτ rigid有限多元環に関する論文も完成した。

Strategy for Future Research Activity

前射影多元環上の表現論と、対応するCoxeter群の組み合わせ論に関する研究を深化させる予定。同時に、部分前射影多元環を応用して、3次元超局面特異点を研究する予定。

Causes of Carryover

少額であり、誤差の範囲内である。

Expenditure Plan for Carryover Budget

旅費の一部として使用する予定である。

  • Research Products

    (33 results)

All 2016 2015 2014 Other

All Journal Article (13 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 13 results,  Acknowledgement Compliant: 11 results) Presentation (19 results) (of which Invited: 15 results) Remarks (1 results)

  • [Journal Article] Reduction of triangulated categories and maximal modification algebras for cA_n singularities2016

    • Author(s)
      Osamu Iyama, Michael Wemyss
    • Journal Title

      J. Reine Angew. Math.

      Volume: 未定 Pages: 未定

    • DOI

      10.1515/crelle-2015-0031

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Frobenius categories, Gorenstein algebras and rational surface singularities2015

    • Author(s)
      Martin Kalck, Osamu Iyama, M. Wemyss, D. Yang
    • Journal Title

      Compos. Math.

      Volume: 151 Pages: 502--534

    • DOI

      10.1112/S0010437X14007647

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Non-commutative resolutions and Grothendieck groups2015

    • Author(s)
      Hailong Dao, Osamu Iyama, Ryo Takahashi, Charles Vial
    • Journal Title

      J. Noncommut. Geom.

      Volume: 9 Pages: 21--34

    • DOI

      10.4171/JNCG/186

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Lattice structure of torsion classes for path algebras2015

    • Author(s)
      Osamu Iyama, Idun Reiten, Gordana Todorov, Hugh Thomas
    • Journal Title

      Bull. Lond. Math. Soc.

      Volume: 47 Pages: 639--650

    • DOI

      10.1112/blms/bdv041

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Stable categories of Cohen-Macaulay modules and cluster categories2015

    • Author(s)
      Claire Amiot, Osamu Iyama, Idun Reiten
    • Journal Title

      Amer. J. Math.

      Volume: 137 Pages: 未定

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Tilting bundles on orders on $P^d$2015

    • Author(s)
      Osamu Iyama, Boris Lerner
    • Journal Title

      Israel J. Math.

      Volume: 未定 Pages: 未定

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Dimension of triangulated categories with respect to subcategories2014

    • Author(s)
      Takuma Aihara, Tokuji Araya, Osamu Iyama, Ryo Takahashi, Michio Yoshiwaki
    • Journal Title

      J. Algebra

      Volume: 399 Pages: 205--219

    • DOI

      doi:10.1016/j.jalgebra.2013.09.035

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] n-representation infinite algebras2014

    • Author(s)
      Martin Herschend, Osamu Iyama, Steffen Oppermann
    • Journal Title

      Adv. Math.

      Volume: 252 Pages: 292--342

    • DOI

      doi:10.1016/j.aim.2013.09.023

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] $\tau$-tilting theory2014

    • Author(s)
      Takahide Adachi, Osamu Iyama, Idun Reiten
    • Journal Title

      Compos. Math.

      Volume: 150 Pages: 415--452

    • DOI

      http://dx.doi.org/10.1112/S0010437X13007422

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Singular Derived Categories of Q-factorial terminalizations and Maximal Modification Algebras2014

    • Author(s)
      Osamu Iyama, Michael Wemyss
    • Journal Title

      Adv. Math.

      Volume: 261 Pages: 85--121

    • DOI

      doi:10.1016/j.aim.2014.04.001

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Introduction to $\tau$-tilting theory2014

    • Author(s)
      Osamu Iyama, Idun Reiten
    • Journal Title

      Proc. Natl. Acad. Sci. USA

      Volume: 111 Pages: 9704--9711

    • DOI

      doi: 10.1073/pnas.1313075111

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Maximal modifications and Auslander-Reiten duality for non-isolated singularities2014

    • Author(s)
      Osamu Iyama, Michael Wemyss
    • Journal Title

      Invent. Math.

      Volume: 197 Pages: 521--586

    • DOI

      10.1007/s00222-013-0491-y

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Intermediate co-t-structures, two-term silting objects, tau-tilting modules, and torsion classes2014

    • Author(s)
      Osamu Iyama, Peter Jorgensen, Dong Yang
    • Journal Title

      Algebra Number Theory

      Volume: 8 Pages: 2413--2431

    • DOI

      DOI: 10.2140/ant.2014.8.2413

    • Peer Reviewed
  • [Presentation] Higher preprojective algebrars and Cohen-Macaulay representations2015

    • Author(s)
      Osamu Iyama
    • Organizer
      Algebra and Geometry seminar
    • Place of Presentation
      Uppsala University, Sweden
    • Year and Date
      2015-03-24 – 2015-03-24
    • Invited
  • [Presentation] Tilting theory and Cohen-Macaulay representations2015

    • Author(s)
      Osamu Iyama
    • Organizer
      Representation Theory Seminar
    • Place of Presentation
      Mittag-Leffler Institute, Sweden
    • Year and Date
      2015-03-19 – 2015-03-19
    • Invited
  • [Presentation] Higher representation-finite algebras2015

    • Author(s)
      Osamu Iyama
    • Organizer
      Higher seminars in the subject Mathematics/Applied Mathematics
    • Place of Presentation
      Malardalens hogskola, Vasteras, Sweden
    • Year and Date
      2015-03-18 – 2015-03-18
    • Invited
  • [Presentation] Silting reduction and Calabi-Yau reduction of triangulated categories2015

    • Author(s)
      Osamu Iyama
    • Organizer
      Homological bonds between Commutative Algebra and Representation Theory​
    • Place of Presentation
      CRM, Barcelona, Spain
    • Year and Date
      2015-02-19 – 2015-02-19
    • Invited
  • [Presentation] Tilting theory and Cohen-Macaulay representations(4回連続講演)2015

    • Author(s)
      Osamu Iyama
    • Organizer
      (Re)emerging methods in Commutative Algebra and Representation Theory
    • Place of Presentation
      CRM, Barcelona, Spain
    • Year and Date
      2015-02-09 – 2015-02-13
    • Invited
  • [Presentation] Preprojective algebras and Cohen-Macaulay representations II: Cluster theory2015

    • Author(s)
      Osamu Iyama
    • Organizer
      第27回可換環論セミナー
    • Place of Presentation
      静岡大学
    • Year and Date
      2015-01-25 – 2015-01-25
  • [Presentation] Calabi-Yau reduction of cluster categories2015

    • Author(s)
      Osamu Iyama
    • Organizer
      Workshop Rikkyo MathPhys 2015
    • Place of Presentation
      Rikkyo University, Japan
    • Year and Date
      2015-01-11 – 2015-01-11
    • Invited
  • [Presentation] Orlov’s theorem and Geigle-Lenzing complete intersections2014

    • Author(s)
      Osamu Iyama
    • Organizer
      Workshop on Homological Interactions between Representation Theory and Singularity Theory
    • Place of Presentation
      Edinburgh, Scotland, U.K.
    • Year and Date
      2014-12-16 – 2014-12-16
    • Invited
  • [Presentation] Silting reduction and Calabi-Yau reduction of triangulated categories2014

    • Author(s)
      Osamu Iyama
    • Organizer
      第5回岡山可換代数表現セミナー
    • Place of Presentation
      岡山大学
    • Year and Date
      2014-12-08 – 2014-12-08
    • Invited
  • [Presentation] Preprojective algebras and Cohen-Macaulay representations2014

    • Author(s)
      Osamu Iyama
    • Organizer
      36th symposium on Commutative Algebra
    • Place of Presentation
      International Productivity Center, Kanagawa, Japan
    • Year and Date
      2014-11-22 – 2014-11-22
  • [Presentation] Higher Auslander correspondence and d-Cohen-Macaulay finiteness2014

    • Author(s)
      Osamu Iyama
    • Organizer
      Maurice Auslander Memorial Workshop
    • Place of Presentation
      University Bielefeld, Germany
    • Year and Date
      2014-11-13 – 2014-11-13
    • Invited
  • [Presentation] $\tau$-tilting theory I, II(2回講演)2014

    • Author(s)
      Osamu Iyama
    • Organizer
      Cluster algebras and Representation theory
    • Place of Presentation
      Center for Mathematical Challenges (CMC), KIAS, Seoul, Korea
    • Year and Date
      2014-11-03 – 2014-11-05
    • Invited
  • [Presentation] Cohen-Macaulay representations of Geigle-Lenzing complete intersections2014

    • Author(s)
      Osamu Iyama
    • Organizer
      可換環論と表現論
    • Place of Presentation
      岡山大学
    • Year and Date
      2014-10-13 – 2014-10-13
    • Invited
  • [Presentation] Silting reduction of triangulated categories2014

    • Author(s)
      Osamu Iyama
    • Organizer
      47th symposium on Ring Theory and Representation Theory
    • Place of Presentation
      Osaka City University, Japan
    • Year and Date
      2014-09-13 – 2014-09-13
  • [Presentation] Cohen-Macaulay representations of Geigle-Lenzing complete intersections2014

    • Author(s)
      Osamu Iyama
    • Organizer
      XVI International Conference on Representations of Algebras (ICRA 2014)
    • Place of Presentation
      Sanya, Hainan Province, China
    • Year and Date
      2014-08-29 – 2014-08-29
    • Invited
  • [Presentation] Cohen-Macaulay representations of Geigle-Lenzing complete intersections2014

    • Author(s)
      Osamu Iyama
    • Organizer
      Commutative Algebra and Singularity Theory
    • Place of Presentation
      Tateyama Kokusai Hotel, Japan
    • Year and Date
      2014-07-30 – 2014-07-30
    • Invited
  • [Presentation] Cohen-Macaulay representations of Geigle-Lenzing complete intersections2014

    • Author(s)
      Osamu Iyama
    • Organizer
      Advances in Representation Theory of Algebras (ARTA)
    • Place of Presentation
      Universite du Quebec a Montreal, Quebec, Canada
    • Year and Date
      2014-06-19 – 2014-06-19
    • Invited
  • [Presentation] Cohen-Macaulay representations of Geigle-Lenzing complete intersections2014

    • Author(s)
      Osamu Iyama
    • Organizer
      Colloquium in honour of the 75th birthday of Helmut Lenzing
    • Place of Presentation
      Bielefeld University, Germany
    • Year and Date
      2014-05-16 – 2014-05-16
    • Invited
  • [Presentation] Cohen-Macaulay representations of Geigle-Lenzing complete intersections2014

    • Author(s)
      Osamu Iyama
    • Organizer
      特異点セミナー
    • Place of Presentation
      日本大学
    • Year and Date
      2014-04-21 – 2014-04-21
  • [Remarks] Osamu Iyama's Home Page

    • URL

      http://www.math.nagoya-u.ac.jp/~iyama/

URL: 

Published: 2016-06-01  

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