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Geometry of semi-infinite flag varieties and level-zero representation theory of quantum affine algebras

Research Project

Project/Area Number 26887002
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Algebra
Research InstitutionTokyo Denki University (2015)
Tohoku University (2014)

Principal Investigator

Ishii Motohiro  東京電機大学, 情報環境学部, 助教 (00732463)

Project Period (FY) 2014-08-29 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords量子アフィン展開環 / 半無限Bruhatグラフ / 結晶基底 / 二重アフィンWeyl群 / アフィンLie環 / アフィンWeyl群 / 半無限旗多様体
Outline of Final Research Achievements

1. A gallery model for level-zero representations: We introduce a gallery model for crystal bases of level-zero extremal weight modules over quantum affine algebras.
2. Construction and classification of holomorphic VOA of central charge 24: We classify holomorphic VOAs of central charge 24 obtained by applying Miyamoto's $\mathbb{Z}_3$-orbifold construction.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Annual Research Report
  • Research Products

    (9 results)

All 2016 2015 2014

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

  • [Journal Article] Semi-infinite Lakshmibai-Seshadri path model for level-zero extremal weight modules over quantum affine algebras2016

    • Author(s)
      Motohiro Ishii, Satoshi Naito and Daisuke Sagaki
    • Journal Title

      Advances in Mathematics

      Volume: 290 Pages: 967-1009

    • DOI

      10.1016/j.aim.2015.11.037

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Automorphisms of Niemeier lattices for Miyamoto's Z_3-orbifold construction2015

    • Author(s)
      Motohiro Ishii, Daisuke Sagaki, and Hiroki Shimakura
    • Journal Title

      Mathematische Zeitschrift

      Volume: 印刷中 Issue: 1-2 Pages: 55-83

    • DOI

      10.1007/s00209-015-1413-z

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 量子ループ代数の組合せ論的表現論2016

    • Author(s)
      石井基裕
    • Organizer
      数理科学談話会
    • Place of Presentation
      室蘭工業大学(北海道室蘭市)
    • Year and Date
      2016-01-20
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] アフィングラスマン多様体入門2015

    • Author(s)
      石井基裕
    • Organizer
      アフィングラスマン多様体とその周辺
    • Place of Presentation
      東京大学玉原国際セミナーハウス(群馬県沼田市)
    • Year and Date
      2015-08-18
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] A combinatorial realization of Weyl modules over quantum affine algebras2015

    • Author(s)
      M. Ishii
    • Organizer
      RIMS Camp-style seminar "Diagram algebras and topology"
    • Place of Presentation
      沖縄県糸満市
    • Year and Date
      2015-08-03
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 量子アフィン展開環のレベル・ゼロ表現に対するギャラリー模型2015

    • Author(s)
      石井基裕
    • Organizer
      Reresentation Theory Seminar
    • Place of Presentation
      京都大学
    • Year and Date
      2015-01-09
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Path and gallery models for level-zero representations of quantum affine algebras2014

    • Author(s)
      石井基裕
    • Organizer
      RIMS研究集会「有限群とその表現、頂点作用素代数、代数的組合せ論の研究」
    • Place of Presentation
      京都大学
    • Year and Date
      2014-12-17
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] A gallery model for level-zero representations of quantum affine algebras2014

    • Author(s)
      Motohiro Ishii
    • Organizer
      Shanghai Workshop on Representation Theory
    • Place of Presentation
      Tongji University, China
    • Year and Date
      2014-12-08
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] A gallery model for level-zero representations of quantum affine algebras2014

    • Author(s)
      石井基裕
    • Organizer
      RIMS研究集会「組合せ論的表現論と表現論的組合せ論」
    • Place of Presentation
      京都大学
    • Year and Date
      2014-10-29
    • Related Report
      2014 Annual Research Report

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Published: 2014-09-09   Modified: 2017-05-10  

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