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Study on BV-structure of Hochschild cohomology of finite dimensional algebras

Research Project

Project/Area Number 17K14175
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Algebra
Research InstitutionTakasaki City University of Economics (2020-2021)
Tokyo University of Science (2017-2019)

Principal Investigator

Tomohiro Itagaki  高崎経済大学, 経済学部, 准教授 (80756487)

Project Period (FY) 2017-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsホッホシルトコホモロジー / BV structure / 多元環の表現論 / BV-構造 / 多元環 / ホッホシルトホモロジー / Batalin-Vilkovisky構造 / フロベニウス多元環 / 代数学
Outline of Final Research Achievements

In this research, we calculate Batalin-Vilkovisky algebra structure of Hochschild cohomology of selfinjective Nakayama algebras with a Nakayama automorphism diagonalizable. Moreover, we give a sufficient condition, related to 2-cocycles, for Hochschild extension algebras to be symmetric. Furthermore, we obtain several results for Batalin-Vilkovisky algebra structure and Hochschild extension algebras as collaborations.

Academic Significance and Societal Importance of the Research Achievements

ホッホシルトコホモロジーは導来同値の不変量であり、豊富な代数的な構造をもっている。Gerstenhaberブラケットに関するBatalin-Vilkovisky代数構造はその一つであるが、具体計算例は多くはない。本研究では、具体計算例として中山自己同型が対角化可能な自己入射的中山多元環についての結果を得ることで、これに貢献したと考える。また、いくつかの共同研究による結果についてはBatalin-Vilkovisky代数構造の存在性やフロベニウス多元環の研究に貢献したと考える。

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (19 results)

All 2022 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (1 results) Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (15 results) (of which Int'l Joint Research: 5 results,  Invited: 4 results)

  • [Int'l Joint Research] 華東師範大学(中国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] A Batalin-Vilkovisky structure on the complete cohomology ring of a Frobenius algebra2021

    • Author(s)
      Itagaki Tomohiro、Sanada Katsunori、Usui Satoshi
    • Journal Title

      Journal of Algebra

      Volume: 581 Pages: 226-277

    • DOI

      10.1016/j.jalgebra.2021.04.016

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Symmetric Hochschild extension algebras and normalized 2-cocycles2018

    • Author(s)
      Itagaki Tomohiro
    • Journal Title

      Archiv der Mathematik

      Volume: 112 Issue: 3 Pages: 249-259

    • DOI

      10.1007/s00013-018-1249-y

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] On presentations of Hochschild extension algebras for a class of self-injective Nakayama algebras2018

    • Author(s)
      Koie Hideyuki、Itagaki Tomohiro、Sanada Katsunori
    • Journal Title

      SUT Journal of Mathematics

      Volume: 53 Pages: 135-148

    • NAID

      120006732558

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Hochschild cohomology of Nm2022

    • Author(s)
      板垣智洋、鳥居猛、中本和典
    • Organizer
      日本数学会2022年度年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Hochschild cohomology of Nm2021

    • Author(s)
      板垣智洋、鳥居猛、中本和典
    • Organizer
      第53回環論及び表現論シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 有限次元自己入射的多元環のホッホシルトコホモロジー上のBV構造について2020

    • Author(s)
      板垣智洋
    • Organizer
      第9回(非)可換代数とトポロジー
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] The Hochschild cohomology of a class of exceptional periodic selfinjective algebras of polynomial growth2019

    • Author(s)
      Tomohiro Itagaki, Hideyuki Koie
    • Organizer
      第8回日中韓環論国際シンポジウム
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] BV algebra structures on Hochschild cohomology of self-injective Nakayama algebras2019

    • Author(s)
      板垣智洋
    • Organizer
      第65回代数学シンポジウム
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Batalin-Vilkovisky algebra structures on the Hochschild cohomology of self-injective Nakayama algebras2018

    • Author(s)
      Tomohiro Itagaki
    • Organizer
      環論及び表現論シンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] Symmetric Hochschild extension algebras and normalized 2-cocycles2018

    • Author(s)
      Tomohiro Itagaki
    • Organizer
      The Mini-Workshop on Hochschild Cohomology and Related Topics III
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Batalin-Vilkovisky algebra structures on the Hochschild cohomology of self-injective Nakayama algebras2018

    • Author(s)
      板垣智洋
    • Organizer
      日本数学会2018年度年会
    • Related Report
      2017 Research-status Report
  • [Presentation] On presentations of Hochschild extension algebras for a class of self-injective Nakayama algebras2018

    • Author(s)
      鯉江秀行(登壇者)、板垣智洋、眞田克典
    • Organizer
      日本数学会2018年度年会
    • Related Report
      2017 Research-status Report
  • [Presentation] A Batalin-Vilkovisky algebra structure on the Hochschild cohomology of self-injective Nakayama algebras2017

    • Author(s)
      Tomohiro Itagaki
    • Organizer
      シュトゥットガルト大学表現論セミナー
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Batalin-Vilkovisky algebra structures on the Hochschild cohomology of self-injective Nakayama algebras2017

    • Author(s)
      Tomohiro Itagaki
    • Organizer
      華東師範大学数学科セミナー
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Symmetric Hochschild extension algebras and the normalization of 2-cocycles.2017

    • Author(s)
      Tomohiro Itagaki
    • Organizer
      シュトゥットガルト大学表現論セミナー
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Symmetric Hochschild extension algebras and normalized 2-cocycles2017

    • Author(s)
      板垣智洋
    • Organizer
      日本数学会秋季総合分科会
    • Related Report
      2017 Research-status Report
  • [Presentation] Symmetric Hochschild extension algebras and normalized 2-cocycles2017

    • Author(s)
      板垣智洋
    • Organizer
      環論及び表現論シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] The ordinary quivers of Hochschild extension algebras for self-injective Nakayama algebras2017

    • Author(s)
      鯉江秀行(登壇者)、板垣智洋、眞田克典
    • Organizer
      環論及び表現論シンポジウム
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2023-01-30  

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