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Tomiyasu Ryoko  富安 亮子

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… Alternative Names

Ryoko Tomiyasu  富安 亮子

大石亮子

OISHI-TOMIYASU Ryoko  富安 亮子

大石 亮子

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Researcher Number 30518824
Other IDs
Affiliation (Current) 2025: 国立研究開発法人理化学研究所, 数理創造研究センター, チームディレクター
2025: 九州大学, マス・フォア・インダストリ研究所, 教授
Affiliation (based on the past Project Information) *help 2022 – 2024: 九州大学, マス・フォア・インダストリ研究所, 教授
2019 – 2021: 九州大学, マス・フォア・インダストリ研究所, 准教授
2010 – 2013: 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 特任助教
Review Section/Research Field
Principal Investigator
Basic Section 12040:Applied mathematics and statistics-related / General mathematics (including Probability theory/Statistical mathematics)
Keywords
Principal Investigator
応用数学 / 半正定値計画法 / 位相問題 / 手法開発 / 数値解析 / 調和解析 / 代数計算 / 格子基底簡約 / 高次連分数 / 格子基底簡約理論 … More / 連分数 / マルコフ数 / バーガース方程式 / 準結晶 / 自己相似 / Markov spectrum / 数論の応用 / 代数の応用 / 偏微分方程式 / メッシュ生成 / 非周期的パッキング / 格子 / Markoff理論 / パッキング / 応用代数 / 数の幾何 / マルコフ理論 / 点群生成 / パッキング生成 / 大域的最適化 / 多項式計画問題 / 平均テータ級数 / 粉末未知構造解析 / 簡約理論 / 二次形式 / ブラベー格子 / 粉末指数付け / 結晶構造解析 Less
  • Research Projects

    (3 results)
  • Research Products

    (62 results)
  •  Harmonic analysis for finitely many data points and its application to material structure analysisPrincipal Investigator

    • Principal Investigator
      富安 亮子
    • Project Period (FY)
      2024 – 2028
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 12040:Applied mathematics and statistics-related
    • Research Institution
      Kyushu University
  •  study on discrete point sets to produce new applications of lattice theory and algebraic computationPrincipal Investigator

    • Principal Investigator
      Ryoko Tomiyasu
    • Project Period (FY)
      2019 – 2023
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 12040:Applied mathematics and statistics-related
    • Research Institution
      Kyushu University
  •  New approach towards ab-initio powder crystal structure determination using global optimization methodPrincipal Investigator

    • Principal Investigator
      OISHI-TOMIYASU Ryoko
    • Project Period (FY)
      2010 – 2012
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      High Energy Accelerator Research Organization

All 2024 2023 2022 2021 2020 2019 2014 2013 2012 2011 2010 Other

All Journal Article Presentation Book Patent

  • [Book] 代数的・幾何的アプローチによる離散最適化入門2023

    • Author(s)
      Jesus A. De Loera 著・ Raymond Hemmecke 著・ Matthias Koppe 著・ 佐久間 雅 訳・ 富安 亮子 訳・ 八森 正泰 訳・ 脇 克志 訳
    • Total Pages
      458
    • Publisher
      共立出版
    • ISBN
      9784320114951
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Book] 数理科学 2019年11月号「最適化の数理」2019

    • Author(s)
      岩田覚, 高松瑞代, 小林佑輔, 寒野善博, 富安亮子, 中務佑治, 佐藤一宏, 山崎和俊, 山下真, S.Safarina, T.J.Mullin, 森口聡子, 丹下基生, 戸田正人
    • Total Pages
      80
    • Publisher
      サイエンス社
    • ISBN
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Journal Article] Ideas of lattice-basis reduction theory for error-stable Bravais lattice determination and ab-initio indexing2024

    • Author(s)
      R. Oishi-Tomiyasu
    • Journal Title

      arxiv (submitted to a special issue of Acta Cryst. A)

      Volume: - Pages: 1-29

    • Open Access
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Journal Article] An Ab-Initio Indexing Method Using Conway’ s Topograph and Mathematical Ideas Behind It2024

    • Author(s)
      富安(大石)亮子
    • Journal Title

      Nihon Kessho Gakkaishi

      Volume: 66 Issue: 1 Pages: 19-30

    • DOI

      10.5940/jcrsj.66.19

    • ISSN
      0369-4585, 1884-5576
    • Year and Date
      2024-02-29
    • Language
      Japanese
    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Journal Article] Universal sums of generalized heptagonal numbers2023

    • Author(s)
      Kamaraj, R., Kane, B. & Oishi-Tomiyasu, R.
    • Journal Title

      Journal of Number Theory

      Volume: 249 Pages: 500-536

    • DOI

      10.1016/j.jnt.2023.02.003

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Journal Article] Distribution rules of systematic absences and generalized de Wolff figures of merit applied to electron backscatter diffraction ab initio indexing2021

    • Author(s)
      Oishi-Tomiyasu, R., Tanaka, T. & Nakagawa
    • Journal Title

      Journal of Applied Crystallography

      Volume: 54 Issue: 2 Pages: 624-635

    • DOI

      10.1107/s1600576721002120

    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Journal Article] Mathematical Tools that Connect Different Indexing Analyses2020

    • Author(s)
      Ryoko Oishi-Tomiyasu
    • Journal Title

      Proceedings, IOCC 2020

      Volume: 62 Pages: 8-8

    • DOI

      10.3390/proceedings2020062008

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Journal Article] On positive-definite ternary quadratic forms with the same representations over Z2020

    • Author(s)
      R. Oishi-Tomiyasu
    • Journal Title

      Int. J. Number Theory

      Volume: - Issue: 07 Pages: 1493-1534

    • DOI

      10.1142/s1793042120500785

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Journal Article] Robust powder auto-indexing using many peaks2014

    • Author(s)
      R. O-Tomiyasu
    • Journal Title

      J. Appl. Cryst

      Volume: 47 Issue: 2 Pages: 593-598

    • DOI

      10.1107/s1600576714000922

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] Distribution rules of systematic absences on the Conway topograph and their application to powder auto-indexing2013

    • Author(s)
      R. O-Tomiyasu
    • Journal Title

      Acta Cryst

      Volume: A69 Issue: 6 Pages: 603-610

    • DOI

      10.1107/s0108767313021740

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] Reversed de Wolff figure of merit and its application to powder indexing solutions2013

    • Author(s)
      R. O-Tomiyasu
    • Journal Title

      J. Appl. Cryst

      Volume: 46 Issue: 5 Pages: 1277-1282

    • DOI

      10.1107/s0021889813018773

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] Rapid Bravais-lattice determination algorithm for lattice parameters containing large observation errors2012

    • Author(s)
      R. O-Tomiyasu
    • Journal Title

      Acta Cryst

      Volume: A68 Issue: 5 Pages: 525-535

    • DOI

      10.1107/s0108767312024579

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] Application of matrix decomposition algorithms for singular matrices to Pawley method in Z-Rietveld2012

    • Author(s)
      R. Oishi-Tomiyasu, M. Yonemura, T. Morishima, A. Hoshikawa, S. Torii, T. Ishigaki and T. Kamiyama
    • Journal Title

      J. Appl. Cryst

      Volume: 45 Issue: 2 Pages: 299-308

    • DOI

      10.1107/s0021889812003998

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] Application of matrix decomposition algorithms for singular matrices to Pawley method in Z-Rietveld2012

    • Author(s)
      R.Oishi-Tomiyasu, M.Yonemura, T.Morishima, A.Hoshikawa, S.Torii, T.Ishigaki, T.Kamiyama
    • Journal Title

      Journal of applied crystallography

      Volume: 45 Pages: 299-308

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] Application of matrix decomposition algorithms for singular matrices to Pawley method in Z-Rietveld2012

    • Author(s)
      R.Oishi-Tomiyasu, M.Yonemura, T.Morishima, A.Hoshikawa, S.Torii, T.Ishigaki, T.Kamiyama
    • Journal Title

      Journal of Applied Crystallography

      Volume: 45 Pages: 299-308

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] Algorithm and performance of a new powder indexing software Conograph2011

    • Author(s)
      R.Oishi-Tomiyasu, T.Kamiyama
    • Journal Title

      Acta Crystallographica section A

      Volume: A67

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] Super High Resolution Powder Diffractometer at J-PARC2011

    • Author(s)
      S. Torii, M. Yonemura, T. Y. Surya Panca Putra, J. Zhang, P. Miao, T. Muroya, R. Tomiyasu, T. Morishima, S. Sato, H. Sagehashi, Y. Noda, T. Kamiyama
    • Journal Title

      J. Phys. Soc. Jpn, Supplement B

      Volume: 80

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] Algorithm and performance of a new powder indexing software Conograph2011

    • Author(s)
      R. Oishi-Tomiyasu, T. Kamiyama
    • Journal Title

      Acta Cryst

      Volume: A67

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] 数学者の立場からの粉末構造解析(解の一意性に関わる問題を中心に)2010

    • Author(s)
      富安亮子
    • Journal Title

      日本中性子科学会学会誌「波紋」サイエンス記事

      Volume: Vol.20, No.4 Pages: 274-280

    • NAID

      130007516746

    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] On execution of Pawley method without requiring intensity constraints on overlapping reflections2010

    • Author(s)
      R. Oishi-Tomiyasu, M. Yonemura, A. Hoshikawa, S. Torii, T. Ishigaki & T. Kamiyama
    • Journal Title

      Acta Cryst

      Volume: A66

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Journal Article] Rapid Bravais-lattice determination algorithm for lattice constants containing large obeservation errors

    • Author(s)
      R.Oishi-Tomiyasu
    • Journal Title

      掲載確定(Acta crystallographica section A)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Patent] パターン生成方法、パターン生成装置、及びパターン生成プログラム2021

    • Inventor(s)
      富安亮子
    • Industrial Property Rights Holder
      富安亮子
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-103968
    • Filing Date
      2021
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Patent] 情報処理装置, 情報処理方法及びプログラム2014

    • Inventor(s)
      富安亮子
    • Industrial Property Rights Holder
      高エネルギー加速器研究機構
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2011-058571
    • Filing Date
      2014-02-28
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Patent] 情報処理装置、情報処理方法及びプログラム2014

    • Inventor(s)
      富安亮子
    • Industrial Property Rights Holder
      高エネルギー加速器研究機構
    • Industrial Property Rights Type
      特許
    • Filing Date
      2014-02-28
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Patent] 情報処理装置、情報処理方法及びプログラム2011

    • Inventor(s)
      富安亮子
    • Industrial Property Rights Holder
      高エネルギー加速器研究機構
    • Industrial Property Number
      2011-058571
    • Filing Date
      2011-03-16
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] 葉序と線形式の積に由来するパッキング理論2024

    • Author(s)
      富安 亮子
    • Organizer
      日本数学会年会
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] Packing theory derived from phyllotaxis and products of linear forms2024

    • Author(s)
      Ryoko Oishi-Tomiyasu
    • Organizer
      ANZIAM 2024
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] A role of semidefinite relaxation in mathematics of phase retrieval2023

    • Author(s)
      Ryoko Oishi-Tomiyasu
    • Organizer
      ICIAM 2023 Tokyo
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] 黄金角の方法の一般化による非周期的パッキング・メッシュ生成2023

    • Author(s)
      富安 亮子
    • Organizer
      離散数学とその応用研究集会 (JCCA-DMIA-2023)
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] Reduction theory for unit-cell parameters containing observation errors2022

    • Author(s)
      Ryoko Oishi-Tomiyasu
    • Organizer
      Satellite of the 33rd European Crystallographic Meeting
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] 黄金角の方法の一般化による多様体のメッシュ・パターン生成法2022

    • Author(s)
      富安亮子
    • Organizer
      日本応用数理学会年会
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] Global optimization of magnetic structure analysis by semidefinite relaxation method (SDR)2021

    • Author(s)
      R, Oishi-Tomiyasu, K. Tomiyasu, M. Hagihala
    • Organizer
      25th IUCr Congress
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] Packing theory derived from phyllotaxis and products of linear forms2021

    • Author(s)
      Ryoko Oishi-Tomiyasu
    • Organizer
      HKU Number Theory Days 2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] 数論の実社会への応用について2021

    • Author(s)
      富安 (大石) 亮子
    • Organizer
      九州代数的整数論2021春 (KANT2021)
    • Invited
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] 植物に由来する新しいパッキング・パターン生成法2021

    • Author(s)
      富安 亮子
    • Organizer
      第一部会シンポジウム
    • Invited
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] Mathematical Tools that Connect Different Indexing Analyses2020

    • Author(s)
      Ryoko Oishi-Tomiyasu
    • Organizer
      The 2nd International Online Conference on Crystals
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] 数理結晶学における格子の問題 Lattice2020

    • Author(s)
      富安 (大石) 亮子
    • Organizer
      日本数学会 2020年度秋季総合分科会
    • Invited
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] Conographを用いた指数付けの方法2020

    • Author(s)
      富安亮子
    • Organizer
      2019年度中級者向けZ-Code講習会
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] 数理結晶学における格子の問題2020

    • Author(s)
      富安 亮子
    • Organizer
      日本数学会
    • Invited
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] 2次形式論の数理結晶学への応用について2019

    • Author(s)
      富安亮子
    • Organizer
      代数セミナー
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] Conographを用いた指数付けの方法2019

    • Author(s)
      富安亮子
    • Organizer
      2019年度初級者向けZ-Code講習会
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] SDP 緩和に基づく厳密大域的最適化の磁気・結晶構造解析への適用2019

    • Author(s)
      富安亮子 & 富安啓輔
    • Organizer
      日本結晶学会年会
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] A class of semidefinite programs in crystal structure analysis2019

    • Author(s)
      R. Oishi-Tomiyasu
    • Organizer
      La trobe seminar
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] Rigorous global optimization for crystal/magnetic structure analysis2019

    • Author(s)
      R. Oishi-Tomiyasu
    • Organizer
      MaThCryst satellite meeting (ECM32)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] 同じZ上表現を持つ正定値3変数2次形式に関する Kaplansky 予想と関連する結果について2019

    • Author(s)
      富安亮子
    • Organizer
      整数論・保型形式セミナー
    • Invited
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] バラ曲線とフィボナッチ2019

    • Author(s)
      富安亮子
    • Organizer
      サイエンスカフェ
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] EBSD(電子線後方回折) 菊池パターンのab-initio indexing2019

    • Author(s)
      富安亮子
    • Organizer
      結晶の界面,転位,構造の先進数理解析
    • Data Source
      KAKENHI-PROJECT-19K03628
  • [Presentation] On the distribution of vanishing Fourier coefficients of average theta series on the Voronoi graph and its application to crystallography2011

    • Author(s)
      富安亮子
    • Organizer
      第14回整数論オータムワークショップ
    • Place of Presentation
      白馬ハイマウントホテル
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] Algorithm and performance of a new powder indexing software Conograph2011

    • Author(s)
      R.Oishi-Tomiyasu, T.Kamiyama
    • Organizer
      IUCr2011 XXII Congress and General Assembly
    • Place of Presentation
      Av.de la Capital de Espana Madrid(スペイン)
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] 新しい粉末指数づけアルゴリズムとその実行結果について2011

    • Author(s)
      富安亮子、神山崇
    • Organizer
      日本結晶学会
    • Place of Presentation
      北海道大学
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] On the distribution of vanishing Fourier coefficients of average theta series in the Conway topograph and its application to crystallography", Ryoko Tomiyasu, International conference2010

    • Author(s)
      Ryoko Tomiyasu
    • Organizer
      国際会議"Functions in Number Theory and Their Probabilistic Aspects"
    • Place of Presentation
      京都大学
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] Application of topographs to auto-indexing of powder diffraction patterns2010

    • Author(s)
      Ryoko Oishi-Tomiyasu
    • Organizer
      MathCryst Satellite Conference of ECM26
    • Place of Presentation
      Darmstadtium congress centre, Germany
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] CM体の相対イデアル類群とPfister formの対応について2010

    • Author(s)
      富安亮子
    • Organizer
      研究集会「代数的整数論とその周辺」
    • Place of Presentation
      京都大学
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] On execution of Pawley method without intensity constraints on overlapping reflections2010

    • Author(s)
      R.Oishi-Tomiyasu, M.Yonemura, A.Hoshikawa, S.Torii, T.Ishigaki, T.Kamiyama
    • Organizer
      ECM26
    • Place of Presentation
      Darmstadtium congress centre, Germany
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] On the distribution of vanishing Fourier coefficients of average theta series in the Conway topograph and its application to crystallography

    • Author(s)
      R. O-Tomiyasu
    • Organizer
      International conference "Functions in Number Theory and Their Probabilistic Aspects"
    • Place of Presentation
      京都大学
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] 新しい粉末指数づけアルゴリズムとその実行結果について

    • Author(s)
      富安亮子, 神山崇
    • Organizer
      日本結晶学会年会
    • Place of Presentation
      北海道大学
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] Application of topographs to auto-indexing of powder diffraction patterns

    • Author(s)
      R. O-Tomiyasu
    • Organizer
      MathCryst Satellite Conference of ECM26
    • Place of Presentation
      Darmstadtium congress centre, Germany
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] On the distribution of vanishing Fourier coefficients of average theta series on the Voronoi graph and its application to crystallography

    • Author(s)
      R. O-Tomiyasu
    • Organizer
      第14回整数論オータムワークショップ「簡約理論とその応用」
    • Place of Presentation
      白馬ハイマウントホテル
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] CM 体の相対イデアル類群とPfister form の対応について

    • Author(s)
      富安亮子
    • Organizer
      研究集会「代数的整数論とその周辺」
    • Place of Presentation
      京都大学
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] Algorithm and performance of a new powder indexing software Conograph

    • Author(s)
      R. O-Tomiyasu, T. Kamiyama
    • Organizer
      IUCr2011
    • Place of Presentation
      Municipal Conference Centre, Spain
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] On execution of Pawley method without intensity constraints on overlapping reflections

    • Author(s)
      R. O-Tomiyasu, M. Yonemura, A. Hoshikawa, S. Torii, T. Ishigaki, T. Kamiyama
    • Organizer
      ECM26
    • Place of Presentation
      Darmstadtium congress centre, Germany
    • Data Source
      KAKENHI-PROJECT-22740077
  • [Presentation] 結晶学の格子決定問題(粉末指数づけ)への格子簡約理論の応用

    • Author(s)
      富安亮子
    • Organizer
      日本応用数理学会2012年会
    • Place of Presentation
      稚内全日空ホテル
    • Data Source
      KAKENHI-PROJECT-22740077

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