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2008 Fiscal Year Final Research Report

Detection of hidden symmetries in sporadic simple groups and vertex operator algebras

Research Project

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Project/Area Number 17340001
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Algebra
Research InstitutionUniversity of Tsukuba

Principal Investigator

MIYAMOTO Masahiko  University of Tsukuba, 大学院・数理物質科学研究科, 教授 (30125356)

Co-Investigator(Kenkyū-buntansha) MORITA Jun  筑波大学, 大学院・数理物質科学研究科, 教授 (20166416)
KITAZUME Masaaki  千葉大学, 大学院・理学研究科, 教授 (60204898)
NAITO Satoshi  筑波大学, 大学院・数理物質科学研究科, 准教授 (60252160)
KIMURA Tatsuo  筑波大学, 大学院・数理物質科学研究科, 教授 (30022726)
SUGIYAMA Kazunari  千葉工業大学, 情報科学部, 助教 (90375395)
TANABE Kenichiro  北海道大学, 大学院・理学研究科, 助教授 (10334038)
WAJIMA Masayuki  北海道工業大学, 工学部, 教授 (20201163)
SUZUKI Hiroshi  国際基督教大学, 教養学部, 教授 (10135767)
Project Period (FY) 2005 – 2008
Keywords散在型有限単純群 / 頂点作用素代数 / モンスター単純群 / ムーンシャイン予想 / semi-ridigity / 表現
Research Abstract

頂点作用素代数の研究は、有理型の条件の下で行われることが多かったが、研究代表者の研究により、C2有限条件の方が重要であることが認識された。ここでは、C2-有限型の条件の下に、非有理型頂点作用素代数を扱い、semi-rigidity という概念を導入して、その仮定の下で平坦性を証明した。
ある種の頂点作用素代数のウエイト2の空間はグライス代数と呼ばれる可換代数である。可換代数として有名なジョルダン代数がグライス代数となるかどうかは良く分かっていなかった。ここでは、対称行列全体がなすジョルダン代数に対してそれをグライス代数として持つような任意の中心電荷を持つ頂点作用素代数を構成した

  • Research Products

    (20 results)

All 2009 2008 2007 2006 2005

All Journal Article (16 results) (of which Peer Reviewed: 16 results) Presentation (2 results) Book (2 results)

  • [Journal Article] Deformation of central charges, vertex operator algebras whose Griess algebras are Jordan algebras2009

    • Author(s)
      T. Ashihara, M. Miyamoto
    • Journal Title

      J. Algebra 321 no.6

      Pages: 1593-1599

    • Peer Reviewed
  • [Journal Article] Hiroyuki The Hall-Janko graph and the Witt system W\sb {10}2008

    • Author(s)
      N. Horiguchi, M. Kitazume, H. Nakasora
    • Journal Title

      European J. Combin 29no.1

      Pages: 1-8

    • Peer Reviewed
  • [Journal Article] Lakshmibai-Seshadri paths of level-zero shape and one-dimensional sums assocaited to level-zero2008

    • Author(s)
      S. Naito, D. Sagaki
    • Journal Title

      fundamental representations. Compos. Math 144no.6

      Pages: 1525-1556

    • Peer Reviewed
  • [Journal Article] A modification of the Anderson-Mirkovic conjecture for Mirkovic-Vilonen polytopes in types B and C2008

    • Author(s)
      S. Naito, D. Sagaki
    • Journal Title

      J. Algebra 320 no.1

      Pages: 387-416

    • Peer Reviewed
  • [Journal Article] Crystal structure on the set of Lakshmibai-Seshadri paths of an arbitrary level-zero shape2008

    • Author(s)
      S. Naito, D. Sagaki
    • Journal Title

      Proc. Lond. Math. Soc (3)96 no.3

      Pages: 582-622

    • Peer Reviewed
  • [Journal Article] On the order of a group of even order2007

    • Author(s)
      K. Harada, M. Miyamoto
    • Journal Title

      J. Algebra 310, no.2

      Pages: 793-800

    • Peer Reviewed
  • [Journal Article] Some self-dual codes invariant under the Hall-Janko group2007

    • Author(s)
      N. Chigira, M. Harada, M. Kitazume
    • Journal Title

      J. Algebra 316, no.2

      Pages: 578-590

    • Peer Reviewed
  • [Journal Article] Permutation groups and binary self-orthogonal codes2007

    • Author(s)
      N. Chigira, M. Harada, M. Kitazume
    • Journal Title

      Algebra 309, no. 2

      Pages: 610-621

    • Peer Reviewed
  • [Journal Article] Extremal self-dual codes of length 64 through neighbors and covering radii2007

    • Author(s)
      N. Chigira, M. Harada, M. Kitazume
    • Journal Title

      Des. Codes Cryptogr 42, no. 1

      Pages: 93-101

    • Peer Reviewed
  • [Journal Article] Niemeier lattices, Coxeter elements and McKay's E 8-observation on the Monster simple group2006

    • Author(s)
      C. H. Lam, M. Miyamoto
    • Journal Title

      group. Int. Math. Res. Not Art. ID 35967

      Pages: 27

    • Peer Reviewed
  • [Journal Article] Path model for a level-zero extremal weight module over a quantum affine algebra2006

    • Author(s)
      S. Naito, D. Sagaki
    • Journal Title

      II. Adv. Math 200, no. 1

      Pages: 102-124

    • Peer Reviewed
  • [Journal Article] Construction of perfect crystals conjecturally corresponding to Kirillov-Reshetikhin modules over twisted quantum affine algebras2006

    • Author(s)
      S. Naito, D. Sagaki
    • Journal Title

      Comm. Math. Phys 263, no. 3

      Pages: 749-787

    • Peer Reviewed
  • [Journal Article] Crystal base elements of an extremal weight module fixed by a diagram automorphism2005

    • Author(s)
      S. Naito, D. Sagaki
    • Journal Title

      Algebr. Represent. Theory 8, no. 5

      Pages: 689-707

    • Peer Reviewed
  • [Journal Article] Crystal of Lakshmibai-Seshadri paths associated to an integral weight of level zero for an affine Lie algebra2005

    • Author(s)
      S. Naito, D. Sagaki
    • Journal Title

      Int. Math. Res. Not no. 14

      Pages: 815-840

    • Peer Reviewed
  • [Journal Article] An approach to the branching rule from {\germ{sl}}\sb {2n}(\Bbb C) to {\germ{sp}}\sb {2n}(\Bbb C) via Littelmann's path model2005

    • Author(s)
      S. Naito, D. Sagaki
    • Journal Title

      J. Algebra 286, no. 1

      Pages: 187-212

    • Peer Reviewed
  • [Journal Article] On some self-dual codes and unimodular lattices in dimension 482005

    • Author(s)
      M. Harada, M. Kitazume, A. Munemasa, B. Venkov
    • Journal Title

      European J. Combin 6, no. 5

      Pages: 543-557

    • Peer Reviewed
  • [Presentation] Nonvanishing elements2009

    • Author(s)
      M. Miyamoto
    • Organizer
      日本数学会
    • Place of Presentation
      東京大学
    • Year and Date
      2009-03-28
  • [Presentation] Semirigidity and flatness2008

    • Author(s)
      M. Miyamoto
    • Organizer
      Symposium on Lie algebras and VOAs
    • Place of Presentation
      Academica Sinica(台湾)
    • Year and Date
      2008-12-28
  • [Book] シンメトリーとモンスタ2008

    • Author(s)
      宮本雅彦・宮本恭子
    • Total Pages
      250
    • Publisher
      岩波書店
  • [Book] 有限群村の冒険2007

    • Author(s)
      宮本雅彦
    • Total Pages
      200
    • Publisher
      日本評論社

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Published: 2010-06-10   Modified: 2016-04-21  

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