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2020 Fiscal Year Annual Research Report

Study on Insertion/Deletion by Mathematical Method of Root Systems

Research Project

Project/Area Number 18H01435
Research InstitutionChiba University

Principal Investigator

萩原 学  千葉大学, 大学院理学研究院, 教授 (80415728)

Co-Investigator(Kenkyū-buntansha) 仲田 研登  岡山大学, 教育学研究科, 准教授 (70532555)
Project Period (FY) 2018-04-01 – 2021-03-31
Keywords削除符号 / 削除誤り / ルート系 / ディンキン図 / 符号理論
Outline of Annual Research Achievements

一般のルート系に付随する一般化ヤング図形がもつ二種類の順序構造について, 両者が一致する条件を研究した. 本研究は国際会議FpSAC2020にて発表された.また, B型ルート系に付随したワイル群の最高長ルートに対応する鏡映を用いて, Levenshtein符号L_a(n;2n)がある種のパリティ条件を満たす2ビット削除に関して完全であることを示した. 本研究は国際会議ISITA2020にて発表された.
また, ルート系をある種の不定型ルート系に置き替えて, 同様の研究を行った. その結果, ある種のパリティ条件を満たす任意個のビット削除に関して完全な符号の構成に成功した.本研究は国際会議ISIT2021および第18回組合せ論若手研究集会(国内会議)にて発表された.なお, 本研究で用いたルート系の組み合わせゲーム理論的側面を研究し, 対応するゲームの必勝戦略を与えるGrundy関数を決定した. 本研究は国際会議FpSAC2021にて発表された. また, それと関連して, ある種の分割恒等式を証明した. 本研究は2021年度「組合せ遷移」の学生シンポジウムにて, 仲田の指導学生である檜拓磨によって発表された.
今回の研究を通じて,削除誤り符号の構成や削除誤りの拡張に対するノウハウが得られた.一つの例として,Levenshtein符号を一般化したモノトーン符号とルート系の視点で拡張したAzinv符号に対する復号アルゴリズムの開発できた.この成果は専門誌Designs, Codes and Cryptographyに掲載された.他の例として,量子通信上の削除誤りに対する符号構成や復号アルゴリズムの構成に成功した.行列型の符号に対する削除誤り訂正符号の構成と復号アルゴリズムの構成も成功した.本研究での経験があっての賜物と考えている.

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

  • Research Products

    (27 results)

All 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (17 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 17 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 6 results)

  • [Int'l Joint Research] Colorado University(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      Colorado University
  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Country Name
      SINGAPORE
    • Counterpart Institution
      National University of Singapore
  • [Journal Article] Decoding algorithms of monotone codes and azinv codes and their unified view?2022

    • Author(s)
      Hokuto Takahashi, Manabu Hagiwara
    • Journal Title

      Designs, Codes and Cryptography

      Volume: - Pages: -

    • DOI

      10.1007/s10623-021-01004-0

    • Peer Reviewed
  • [Journal Article] Perfect binary codes capable of correcting equal multiple deletions?2021

    • Author(s)
      Kento NAKADA
    • Journal Title

      2021 IEEE International Symposium on Information Theory (ISIT)

      Volume: - Pages: 2661-2665

    • DOI

      10.1109/ISIT45174.2021.9517840

    • Peer Reviewed
  • [Journal Article] Inset games and strategies2021

    • Author(s)
      Kento NAKADA
    • Journal Title

      Seminaire Lotharingien de Combinatoire

      Volume: 85B Pages: Article#73

    • Peer Reviewed
  • [Journal Article] Two Dimensional Deletion Correcting Codes and their Applications2021

    • Author(s)
      Yeow Meng Chee, Manabu Hagiwara, Vu Van Khu
    • Journal Title

      Proceeding of 2021 IEEE International Symposium on Information Theory (ISIT)

      Volume: - Pages: 2792-2797

    • DOI

      10.1109/isit45174.2021.9517903

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Perfect Multi Deletion Codes Achieve the Asymptotic Optimality of Code Size2021

    • Author(s)
      Takehiko Mori, Manabu Hagiwara
    • Journal Title

      IEEE Transactions on Information Theory

      Volume: 67 Pages: 3315-3321

    • DOI

      10.1109/tit.2020.3016261

    • Peer Reviewed
  • [Journal Article] The four qubits deletion code is the first quantum insertion code2021

    • Author(s)
      Manabu Hagiwara
    • Journal Title

      IEICE Communications Express

      Volume: 10 Pages: 243-247

    • DOI

      10.1587/comex.2020xbl0191

    • Peer Reviewed
  • [Journal Article] Constructions of ?-Adic t-Deletion-Correcting Quantum Codes2021

    • Author(s)
      Ryutaroh MATSUMOTO, Manabu HAGIWARA
    • Journal Title

      IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

      Volume: E105-A Pages: 571-575

    • DOI

      10.1587/transfun.2021eap1034

    • Peer Reviewed / Open Access
  • [Journal Article] A Survey of Quantum Error Correction2021

    • Author(s)
      Ryutaroh MATSUMOTO, Manabu HAGIWARA
    • Journal Title

      IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

      Volume: E104-A Pages: 1654-1664

    • DOI

      10.1587/transfun.2021eai0001

    • Peer Reviewed / Open Access
  • [Journal Article] Permutation-Invariant Quantum Codes for Deletion Errors2021

    • Author(s)
      Taro Shibayama, Manabu Hagiwara
    • Journal Title

      Proceeding of 2021 IEEE International Symposium on Information Theory (ISIT)

      Volume: - Pages: 1493-1498

    • DOI

      10.1109/isit45174.2021.9517870

    • Peer Reviewed
  • [Journal Article] Order structure of shapes of predominant integral weights and cylindric Young diagrams,2020

    • Author(s)
      Kento NAKADA
    • Journal Title

      S?minaire Lotharingien de Combinatoire

      Volume: 84B Pages: Article#75

    • Peer Reviewed
  • [Journal Article] A family of perfectness of the Levenshtein codes?La(n;2n),?2020

    • Author(s)
      Kento NAKADA
    • Journal Title

      2020 International Symposium on Information Theory and Its Applications (ISITA)

      Volume: - Pages: 131-135

    • DOI

      10.34385/proc.65.B01-2

    • Peer Reviewed
  • [Journal Article] Formalization of VT Codes and Their Single-Deletion Correcting Property in Lean2020

    • Author(s)
      Yuki Kondo, Manabu Hagiwara, Midori Kudo
    • Journal Title

      IEICE Proceeding of ISITA2020

      Volume: - Pages: 597-601

    • DOI

      10.34385/proc.65.E03-1

    • Peer Reviewed
  • [Journal Article] Conversion Method from Erasure Codes to Multi-Deletion Error-Correcting Codes for Information in Array Design?2020

    • Author(s)
      Manabu Hagiwara
    • Journal Title

      IEICE Proceeding of ISITA2020

      Volume: - Pages: 274-278

    • DOI

      10.34385/proc.65.B06-1

    • Peer Reviewed
  • [Journal Article] Single Quantum Deletion Error-Correcting Codes2020

    • Author(s)
      Ayumu Nakayama, Manabu Hagiwara
    • Journal Title

      IEICE Proceeding of ISITA2020

      Volume: - Pages: 329-333

    • DOI

      10.34385/proc.65.B10-1

    • Peer Reviewed
  • [Journal Article] Applications of Gaussian Binomials to Coding Theory for Deletion Error Correction2020

    • Author(s)
      Manabu Hagiwara, Justin Kong
    • Journal Title

      Annals of Combinatorics

      Volume: 24 Pages: 379-393

    • DOI

      10.1007/s00026-020-00494-4

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Four-Qubits Code that is a Quantum Deletion Error-Correcting Code with the Optimal Length2020

    • Author(s)
      Manabu Hagiwara, Ayumu Nakayama
    • Journal Title

      Proceeding of 2020 IEEE International Symposium on Information Theory (ISIT)

      Volume: - Pages: 1870-1874

    • DOI

      10.1109/isit44484.2020.9174339

    • Peer Reviewed
  • [Journal Article] A Number Theoretic Formula and Asymptotic Optimality of Cardinalities of BAD Correcting Codes2020

    • Author(s)
      Takehiko Mori, Manabu Hagiwara
    • Journal Title

      Discrete Mathematics

      Volume: 343 Pages: -

    • DOI

      10.1016/j.disc.2020.111852

    • Peer Reviewed
  • [Presentation] Inset games and strategies?2022

    • Author(s)
      Kento NAKADA
    • Organizer
      Formal Power Series and Algebraic Combinatorics 2021
    • Int'l Joint Research
  • [Presentation] 削除誤り訂正符号へのワイル群の応用2022

    • Author(s)
      Kento NAKADA
    • Organizer
      第18 回組合せ論若手研究集会
  • [Presentation] グレイシャー対応の?般化について2022

    • Author(s)
      Takuma HINOKI;Kento NAKADA
    • Organizer
      2021年度「組合せ遷移」の学生シンポジウム
  • [Presentation] Perfect binary codes capable of correcting equal multiple deletions2021

    • Author(s)
      Kento NAKADA
    • Organizer
      IEEE International Symposium on Information Theory
    • Int'l Joint Research
  • [Presentation] Order structure of shapes of predominant integral weights and cylindric Young diagrams2020

    • Author(s)
      Kento NAKADA
    • Organizer
      Formal Power Series and Algebraic Combinatorics 2020
    • Int'l Joint Research
  • [Presentation] A family of perfectness of the Levenshtein codes L_a(n;2n)2020

    • Author(s)
      Kento NAKADA
    • Organizer
      2020 International Symposium on Information Theory and Its Applications
    • Int'l Joint Research
  • [Presentation] Conversion Method from Erasure Codes to Multi-Deletion Error-Correcting Codes for Information in Array Design2020

    • Author(s)
      Manabu Hagiwara
    • Organizer
      2020 International Symposium on Information Theory and Its Applications
    • Int'l Joint Research
  • [Presentation] A Four-Qubits Code that is a Quantum Deletion Error-Correcting Code with the Optimal Length2020

    • Author(s)
      Manabu Hagiwara, Ayumu Nakayama
    • Organizer
      2020 IEEE International Symposium on Information Theory (ISIT)
    • Int'l Joint Research

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Published: 2022-12-28  

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