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Investigation of similarities in representation theory of quantum affine algebras of several different Dynkin types

Research Project

Project/Area Number 19K14515
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 11010:Algebra-related
Research InstitutionTokyo Institute of Technology (2022)
Shibaura Institute of Technology (2019-2021)

Principal Investigator

Oya Hironori  東京工業大学, 理学院, 准教授 (90835505)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2019: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Keywords量子ループ代数 / 有限次元表現論 / 量子Grothendieck環 / q-指標 / クラスター代数 / (q,t)-指標 / 団代数 / Newton-Okounkov凸体 / Schubert多様体 / 量子アフィン代数 / Langlands双対
Outline of Research at the Start

量子アフィン代数の有限次元表現論は,量子Yang-Baxter方程式と呼ばれる方程式の解を生み出す代数的枠組みであることに動機づけられ,様々な研究が行われている. 量子アフィン代数には,大きく分けて“対称型”と“非対称型”と呼ばれる2つの型があり,非対称型の場合,有限次元表現論の理解が対称型に比べて大きく遅れているという現状がある.
本課題では,近年認識されつつある対称型と非対称型の有限次元表現論の間の非自明な類似性を研究し,非対称型の表現論が対称型の表現論とある意味で対等であるという状況を確立することを目標としている.

Outline of Final Research Achievements

In my joint work with Ryo Fujita, David Hernandez, and Se-jin Oh, we constructed a collection of ring isomorphisms between the quantum Grothendieck rings of monoidal categories of finite-dimensional modules over the quantum loop algebras associated with complex simple Lie algebras g_1 and g_2 under the assumption that the complex simple Lie algebra defined as the unfolding of g_1 coincides with that of g_2. As its application, we deduced several new positivity properties of the simple (q,t)-characters of non-symmetric types, non-trivial birational relations among the simple (q,t)-characters of quantum loop algebras associated with g_1 and g_2, and the affirmative answer to Hernandez's conjecture for the quantum loop algebra of type B_n(1).

Academic Significance and Societal Importance of the Research Achievements

非対称型量子ループ代数の有限次元表現圏の量子Grothendieck環の構造の研究を,対称型量子ループ代数の有限次元表現圏の量子Grothendieck環と比較するという新しいアブローチから進めた.結果として,適切に対応する型のものを比較すると(q,t)-指標を保つ良い同型が存在することが示され,これまで非対称型の場合に知られていなかった(q,t)-指標の正値性や,B_n(1)型の量子ループ代数の既約表現のq-指標が代数的なアルゴリズムで計算されることが証明された.さらに,非対称型と対称型の量子ループ代数の有限次元表現の間の新たな関係を示唆する,(q,t)-指標の間の関係を導くことができた.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (32 results)

All 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (8 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results) Presentation (14 results) (of which Int'l Joint Research: 6 results,  Invited: 12 results) Remarks (7 results)

  • [Int'l Joint Research] Universite Paris Cite(フランス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Ewha Womans University(韓国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Michigan State University(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Universite de Paris(フランス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Ewha Womans University(韓国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Universite de Paris(フランス)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Ewha Womans University(韓国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Universite de Paris(フランス)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Isomorphisms among quantum Grothendieck rings and propagation of positivity2022

    • Author(s)
      Fujita Ryo、Hernandez David、Oh Se-jin、Oya Hironori
    • Journal Title

      Journal fur die reine und angewandte Mathematik (Crelles Journal)

      Volume: 2022 Issue: 785 Pages: 117-185

    • DOI

      10.1515/crelle-2021-0088

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cluster realizations of Weyl groups and higher Teichmuller theory2021

    • Author(s)
      Rei Inoue, Tsukasa Ishibashi, Hironori Oya
    • Journal Title

      Selecta Mathematica. New Series

      Volume: -

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quantum Grothendieck ring isomorphisms, cluster algebras and Kazhdan-Lusztig algorithm2019

    • Author(s)
      David Hernandez、Hironori Oya
    • Journal Title

      Advances in Mathematics

      Volume: 347 Pages: 192-272

    • DOI

      10.1016/j.aim.2019.02.024

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Isomorphisms among quantum Grothendieck rings and their applications2023

    • Author(s)
      大矢 浩徳
    • Organizer
      Representation theory and geometry of loop spaces
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 量子ループ代数の表現論におけるクラスター代数構造の応用について2023

    • Author(s)
      大矢 浩徳
    • Organizer
      第18回代数・解析・幾何学セミナー
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Relations among the q-characters of simple modules over quantum loop algebras of several Dynkin types2023

    • Author(s)
      大矢 浩徳
    • Organizer
      Integrable Systems and Quantum Groups -In Honor of Masato Okado's 60th Birthday-
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 様々な型の量子Grothendieck環の間の同型とその応用2022

    • Author(s)
      大矢 浩徳
    • Organizer
      第82回芝浦工大数理科学科談話会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 量子ループ代数の表現論におけるクラスター代数構造の応用について2022

    • Author(s)
      大矢 浩徳
    • Organizer
      大岡山談話会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Wilson lines on the moduli space of decorated twisted G-local systems on a marked surface2022

    • Author(s)
      大矢 浩徳
    • Organizer
      Conference on Algebraic Representation Theory 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Wilson lines on the moduli space of G-local systems on a marked surface2022

    • Author(s)
      大矢 浩徳
    • Organizer
      Geometry, Algebra and Physics Seminar at KIAS
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Isomorphisms among quantum Grothendieck rings and their applications2022

    • Author(s)
      大矢 浩徳
    • Organizer
      Quantum Groups and Cluster Algebras
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 捻り写像とその応用について2021

    • Author(s)
      大矢 浩徳
    • Organizer
      日本数学会2021年度秋季総合分科会・無限可積分系セッション特別講演
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Isomorphisms among quantum Grothendieck rings and their applications2021

    • Author(s)
      大矢 浩徳
    • Organizer
      Infinite Analysis 21 Workshop Around Cluster Algebras
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Systematic construction of isomorphisms among quantum Grothendieck rings2021

    • Author(s)
      大矢 浩徳
    • Organizer
      表現論セミナー
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Newton-Okounkov polytopes of Schubert varieties arising from cluster structures and representation-theoretic polytopes2020

    • Author(s)
      大矢 浩徳
    • Organizer
      Seminaire d'Algebre
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 非対称型量子ループ代数の既約表現のq-指標について2019

    • Author(s)
      大矢 浩徳
    • Organizer
      第64回 代数学シンポジウム
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Cluster algebras and calculation of q-characters of simple modules over quantum loop algebras of non-symmetric type2019

    • Author(s)
      大矢 浩徳
    • Organizer
      Representation Theory of Algebraic Groups and Quantum Groups -- in honor of Professor Ariki's 60th birthday --
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 東京工業大学STARサーチ

    • URL

      https://search.star.titech.ac.jp/titech-ss/pursuer.act?event=outside&key_t2r2Rid=CTT100881005&lang=jp

    • Related Report
      2022 Annual Research Report
  • [Remarks] 個人Webページ

    • URL

      https://www.math.titech.ac.jp/~hoya/

    • Related Report
      2022 Annual Research Report
  • [Remarks] N.Fujita and H.Oya, arXiv:2002.09912

    • URL

      https://arxiv.org/abs/2002.09912

    • Related Report
      2021 Research-status Report
  • [Remarks] T.Ishibashi and H.Oya, arXiv:2011.14260

    • URL

      https://arxiv.org/abs/2011.14260

    • Related Report
      2021 Research-status Report
  • [Remarks] T.Ishibashi, H.Oya, and L.Shen, arXiv:2202.03168

    • URL

      https://arxiv.org/abs/2202.03168

    • Related Report
      2021 Research-status Report
  • [Remarks] 個人Webページ

    • URL

      https://www.mathsci.shibaura-it.ac.jp/hoya

    • Related Report
      2021 Research-status Report
  • [Remarks] 個人Webページ

    • URL

      http://www.sic.shibaura-it.ac.jp/~hoya/

    • Related Report
      2020 Research-status Report 2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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