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Construction of path models for modules of critical level over affine Lie algebras

Research Project

Project/Area Number 23740003
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Algebra
Research InstitutionUniversity of Tsukuba

Principal Investigator

SAGAKI Daisuke  筑波大学, 数理物質系, 准教授 (40344866)

Project Period (FY) 2011-04-28 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords量子アフィン代数 / アフィン・リー代数 / 結晶基底 / クリスタル / パス模型 / 量子 Bruhat グラフ / 半無限 Bruhat グラフ / エクストリーマル・ウェイト加群 / Lakshmibai-Seshadri パス / Macdonald 多項式 / 半無限 Bruhat 順序 / Lakshmibai-Seshadriパス / Mirkovic-Vilonen多面体 / quantum Bruhat graph
Outline of Final Research Achievements

(1) We described level-zero Lakshmibai-Seshadri (LS) paths in terms of the (parabolic) quantum Bruhat graph. As an application, we described the degree function (= energy function) on the crystal of level-zero LS paths in terms of the weights of shortest directed paths in the quantum Bruhat graph.
(2) We introduced semi-infinite LS paths in terms of the semi-infinite Bruhat order (and semi-infinite Bruhat graph), which is closely related to irreducible highest weight representations of critical level, and then we proved that the crystal of semi-infinite LS paths is isomorphic, as a crystal, to the crystal basis of the extremal weight module.

Report

(5 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (20 results)

All 2015 2014 2013 2012 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (8 results) (of which Invited: 8 results) Remarks (2 results)

  • [Journal Article] Automorphisms of Niemeier lattices for Miyamoto's $\mathbb{Z}_3$-orbifold construction2015

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

      to appear in Mathematische Zeitschrift

      Volume: 印刷中

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Application of a $\mathbb{Z}_{3}$-orbifold construction to the lattice vertex operator algebras associated to Niemeier lattices2015

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

      to appear in Trans. Amer. Math. Soc.

      Volume: 印刷中

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Posets, tensor products and Schur positivity2014

    • Author(s)
      Vyjayanthi Chari, Ghislain Fourier, Daisuke Sagaki
    • Journal Title

      Algebra Number Theory

      Volume: 8

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A uniform model for Kirillov-Reshetikhin crystals I: Lifting the parabolic quantum Bruhat graph2014

    • Author(s)
      Cristian Lenart, Satoshi Naito, Daisuke Sagaki, Anne Schilling, Mark Shimozono
    • Journal Title

      International Mathematics Research Notices (to appear)

      Volume: 印刷中 Pages: 1848-1901

    • DOI

      10.1093/imrn/rnt263

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quantum Lakshmibai-Seshadri paths and root operators2014

    • Author(s)
      Cristian Lenart, Satoshi Naito, Daisuke Sagaki, Anne Schilling, Mark Shimozono
    • Journal Title

      Advanced Studies in Pure Mathematics (to appear)

      Volume: 印刷中

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Toward Berenstein-Zelevinsky data in affine type A, part III2013

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

      Proof of the connectedness, Springer Proceedings in Mathematics and Statistics

      Volume: Vol.40 Pages: 361-402

    • DOI

      10.1007/978-1-4471-4863-0_15

    • ISBN
      9781447148623, 9781447148630
    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Tensor product multiplicities for crystal bases of extremal weight modules over quantum infinite rank affine algebras of types B∞, C∞, and D∞2012

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

      Transactions of the American Mathematical Society

      Volume: 364

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Toward Berenstein-Zelevinsky data in affine type A, part II: Explicit description2012

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

      Contemporary Mathematics (Algebraic groups and quantum groups)

      Volume: 565

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Toward Berenstein-Zelevinsky data in affine type A, part I: Construction of the affine analogs2012

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

      Contemporary Mathematics (Algebraic groups and quantum groups)

      Volume: 565

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Tensor products and Minkowski sums of Mirkovic-Vilonen polytopes2012

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

      Transformation Groups

      Volume: 17

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Symmetric Macdonald polynomials and quantum Lakshmibai-Seshadri paths2014

    • Author(s)
      佐垣 大輔
    • Organizer
      Tsukuba Workshop on Infinite-dimensional Lie Theory and Related Topics
    • Place of Presentation
      筑波大学(茨城県)
    • Year and Date
      2014-10-20 – 2014-10-23
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Introduction to LS paths I & II2014

    • Author(s)
      佐垣 大輔
    • Organizer
      第3回 シューベルトカルキュラスとその周辺
    • Place of Presentation
      岡山理科大学(岡山県)
    • Year and Date
      2014-08-26 – 2014-08-29
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Semi-infinite Lakshmibai-Seshadri path model for level-zero extremal weight modules over quantum affine algebras2014

    • Author(s)
      佐垣 大輔
    • Organizer
      ICM 2014 Satellite Conference on Representation Theory and Related Topics
    • Place of Presentation
      EXCO, Daegu, South Korea
    • Year and Date
      2014-08-06 – 2014-08-09
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Demazure subcrystals of crystal bases of level-zero extremal weight modules over quantum affine algebras2014

    • Author(s)
      佐垣 大輔
    • Organizer
      第17回代数群と量子群の表現論 (RAQ2014)
    • Place of Presentation
      呉羽ハイツ(富山県)
    • Year and Date
      2014-06-01 – 2014-06-04
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Demazure subcrystals of crystal bases of level-zero extremal weight modules over quantum affine algebras2014

    • Author(s)
      佐垣 大輔
    • Organizer
      第17回代数群と量子群の表現論(RAQ2014)
    • Place of Presentation
      富山勤労総合福祉センター 呉羽ハイツ
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Maximal dimension of tensor products and Schur positivity for classical Lie algebras2012

    • Author(s)
      Daisuke Sagaki
    • Organizer
      Algebraic and Combinatorial approaches to representation theory
    • Place of Presentation
      University of California Riverside (アメリカ)
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] 量子 Bruhat グラフを用いたレベル・ゼロ LS パスの表示2012

    • Author(s)
      佐垣 大輔
    • Organizer
      組合せ論的表現論とその周辺
    • Place of Presentation
      京都大学数理解析研究所(京都)
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] Description of level-zero Lakshmibai-Seshadri paths in terms of the quantum Bruhat graph2012

    • Author(s)
      Daisuke Sagaki
    • Organizer
      Shanghai Workshop on Representation Theory -- Special Session at Osaka
    • Place of Presentation
      大阪大学(大阪)
    • Related Report
      2012 Research-status Report
    • Invited
  • [Remarks]

    • URL

      http://www.math.tsukuba.ac.jp/~sagaki/

    • Related Report
      2011 Research-status Report
  • [Remarks]

    • URL

      http://www.trios.tsukuba.ac.jp/Profiles/0003/0000330/profile.html

    • Related Report
      2011 Research-status Report

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Published: 2011-08-05   Modified: 2023-03-16  

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