Researchers Database

Jikumaru Yoshiki 

    Department of Information Networking for Innovation and Design Assistant Professor
Last Updated :2025/04/19

Researcher Information

Research funding number

  • 80881565

ORCID ID

J-Global ID

Research Interests

  • Discrete differential geometry   Geometric variational problems   

Research Areas

  • Natural sciences / Geometry / Geometric Variational Problems
  • Natural sciences / Geometry / Discrete Differential Geometry
  • Natural sciences / Geometry / Differential Geometry

Academic & Professional Experience

  • 2023/04 - Today  Toyo UniversityInformation Networking for Innovation And Design助教
  • 2020/04 - 2023/03  Kyushu UniversityInstitute of Mathematics for IndustryPostdoctoral Fellow

Education

  • 2017/04 - 2020/03  Kyushu University  Graduate School of Mathematics  Department of Mathematics
  • 2015/04 - 2017/03  Kyushu University  Graduate School of Mathematics  Department of Mathematics
  • 2011/04 - 2015/03  Kyushu University  School of Sciences  Department of Mathematics

Association Memberships

  • 日本数学会   The Japan Society for Industrial and Applied Mathematics   

Published Papers

Books etc

Conference Activities & Talks

  • 膜O曲面とΩ曲面について
    軸丸芳揮
    日本応用数理学会 第21回研究部会連合発表会  2025/03
  • 薄肉シェルにおける曲面の微分幾何
    軸丸芳揮
    多様体上の微分方程式  2024/11
  • 薄肉シェルの変形理論を用いた変分公式の導出
    軸丸芳揮
    日本応用数理学会2024年度年会  2024/09  Oral presentation
  • 薄肉シェルの変形に現れる対称性
    軸丸芳揮
    日本応用数理学会2024年度年会  2024/09  Oral presentation
  • 薄肉シェルの変形に現れる対称性
    軸丸芳揮
    日本数学会2024年度秋季総合分科会  2024/09  Oral presentation
  • 純圧縮トラス構造と離散S-isothermic曲面
    軸丸 芳揮
    部分多様体と離散化の幾何学 (RIMS研究集会, 公開型)  2024/06
  • 力学的合理性および施工性を見据えた建築構造設計のための曲面の微分幾何  [Not invited]
    軸丸 芳揮
    千里山幾何学研究会  2024/06
  • 対数型美的曲線の空間曲線アナロジー:ヤコビの楕円函数を用いた明示公式
    軸丸芳揮; 梶原健司; Wolfgang; K. Schief
    日本応用数理学会第20回研究部会連合発表会  2024/03  Oral presentation
  • 構造設計に動機づけられた可積分離散正則函数における変分原理の構築
    軸丸芳揮; 横須賀洋平; 林和希; 早川健太郎; 梶原健司
    日本応用数理学会第20回研究部会連合発表会  2024/03  Oral presentation
  • Discrete isothermic surfaces and truss structures in architectural design
    Yoshiki Jikumaru
    The 4th International Conference on Surfaces, Analysis, and Numerics in Differential Geometry  2024/02  Oral presentation
  • Discrete isothermic surfaces in architectural surface design
    Yoshiki Jikumaru
    The 4th Taiwan-Japan Joint Conference on Differential Geometry  2023/11  Oral presentation
  • 曲面の幾何学における最近の展開
    軸丸芳揮
    2023年度 日本建築学会大会 構造部門 (シェル・空間構造) パネルディスカッション「新しい離散的な曲面の幾何学と空間構造」― 数学・諸分野と共に拓く  2023/09
  • Geometric shape generation of hanging membranes
    Yoshiki Jikumaru; Yohei Yokosuka
    ICIAM 2023  2023/08
  • On the applicability of discrete conformal maps to truss structures in architectural design
    Yoshiki Jikumaru
    ECMI2023  2023/06  Oral presentation
  • 力学的合理性や施工性を両立する構造設計のための曲面の微分幾何
    軸丸芳揮
    ワークショップ「幾何解析と離散幾何」(Workshop on Geometric Analysis and Discrete Geometry) 第1回「極小曲面・離散曲面への複素解析と数値計算の応用」  2023/05  Oral presentation
  • 可積分幾何に基づくMichellトラス型構造と離散対数型美的曲線
    軸丸芳揮; 早川健太郎; 林和希; 梶原健司; 横須賀洋平
    日本数学会2023年度年会  2023/03  Oral presentation
  • On the truss structures
    軸丸芳揮
    Session "Young Mathematicians' Challenge"  2023/03  Poster presentation
  • On the truss structures in architectural design based on discrete isothermic surfaces  [Invited]
    Yoshiki Jikumaru
    The 3rd Shot of The 13th MSJ-SI "Differential Geometry and Integrable Systems" ~ Celebrating Professor Yoshihiro Ohnita's retirement ~  2023/03
  • 可積分幾何に基づくトラス構造の生成と力学的特性について
    軸丸芳揮; 林和希; 早川健太郎; 横須賀洋平; 梶原健司
    日本応用数理学会第19回研究部会連合発表会  2023/03
  • On the Michell truss-like structures based on discrete isothermic surfaces  [Invited]
    Yoshiki Jikumaru
    The 3rd Conference on Surfaces, Analysis, and Numerics  2023/02  Oral presentation
  • 可積分幾何に基づく膜構造およびトラス構造の形状生成
    軸丸芳揮
    ミニワークショップ「微分幾何・可積分系・形状生成」  2023/02  Oral presentation
  • On the geometry of related to membrane O surfaces and geometric shape generation  [Invited]
    Yoshiki Jikumaru
    2022年度福岡大学微分幾何研究集会  2022/11
  • Geometry of discrete surfaces associated with pure shear in equilibrium  [Invited]
    Yoshiki Jikumaru
    広島幾何学研究集会2022  2022/10  Oral presentation
  • On the Michell truss-like structures recovered by discrete holomorphic functions  [Not invited]
    Kentaro Hayakawa; Kazuki Hayashi; Yoshiki Jikumaru; Kenji Kajiwara; Yohei Yokosuka
    JSIAM2022  2022/09  Oral presentation
  • On the surfaces generated by integrable deformation of constant similarity torsion space curves in similarity geometry  [Not invited]
    Yoshiki Jikumaru; Kenji Kajiwara; Wolfgang K. Schief
    JSIAM2022  2022/09  Oral presentation
  • Geometry of hanging membranes in architectural surface design
    Yoshiki Jikumaru
    Mini-Workshop on Integrable Geometry and Related Topics at Tokushima  2022/05
  • 吊り下げ曲面に関する数学と建築の連携研究紹介  [Invited]
    軸丸芳揮; 横須賀洋平
    数学ソフトウェアとフリードキュメント33  2022/03  Invited oral presentation
  • 吊り下げ曲面の幾何:膜理論と変分原理の観点から  [Not invited]
    軸丸芳揮; 横須賀洋平
    日本応用数理学会 第18回研究部会連合発表会  2022/03  Oral presentation
  • 吊り下げ曲面の微分幾何学的定式化  [Not invited]
    軸丸芳揮; 横須賀洋平
    第18回数学総合若手研究集会 〜数学の交叉点〜  2022/03  Oral presentation
  • Geometry of hanging membranes from shell membrane theory and variational principle  [Invited]
    Yoshiki Jikumaru; Yohei Yokosuka
    Symmetry and Stability in Differential Geometry of Surfaces (RIMS Research Project 2020, RIMS Review Seminar)  2022/02  Invited oral presentation
  • Differential Geometry Formulation of Hanging Membranes  [Not invited]
    Yoshiki Jikumaru; Yohei Yokosuka
    Forum Math for Industry 2021, Mathematics for Digital Economy  2021/12  Poster presentation
  • On the stability of discrete planar curves  [Not invited]
    Yoshiki Jikumaru
    日本数学会2021年度秋季総合分科会  2021/09
  • Geometry of equilibirum discrete surfaces for anisotropic energy  [Not invited]
    Yoshiki Jikumaru
    日本応用数理学会2021年度年会 研究部会OS 幾何学的形状生成  2021/09  Oral presentation
  • 相似幾何学における空間曲線の時間発展に現れるsine-Gordon方程式  [Not invited]
    軸丸芳揮; 梶原健司; Wolfgang Karl Schief
    日本応用数理学会2021年度年会 研究部会OS 幾何学的形状生成  2021/09  Oral presentation
  • The sine-Gordon equation appeared in the similarity geometry and some pseudospherical surface correspondence  [Invited]
    Yoshiki Jikumaru; Kenji Kajiwara; Wolfgang Karl Schief
    特異点論の未来  2021/06
  • On the generalization of log-aesthetic curves to space curves and surfaces and their pseudospherical surface correspondence  [Not invited]
    Yoshiki Jikumaru; Kenji Kajiwara; Wolfgang Karl Schief
    日本応用数理学会 第17回研究部会連合発表会  2021/03  Oral presentation
  • On a discretization of constant anisotropic mean curvature curves and surfaces  [Invited]
    Yoshiki Jikumaru
    多様体上の微分方程式  2020/10  Oral presentation
  • On the instability of piecewise smooth anisotropic mean curvature hypersurfaces  [Not invited]
    Yoshiki Jikumaru; Miyuki Koiso
    日本応用数理学会2020年度年会 研究部会OS 幾何学的形状形成  2020/09  Oral presentation
  • Stability problem of equilibrium discrete planar curves
    Yoshiki Jikumaru
    Geometric shape generation, closing workshop  2020/02  Oral presentation
  • Stability problem of equilibrium discrete planar curves  [Invited]
    Yoshiki Jikumaru
    Workshop and School on Geometric Analysis and Discrete Geometry  2020/02  Oral presentation
  • Variational problem for anisotropic energy and its discretization  [Invited]
    Yoshiki Jikumaru
    凸幾何学セミナー(福岡大学)  2020/01
  • Stability problem of equilibrium discrete curves and surfaces modelled by Wulff energy
    Yoshiki Jikumaru
    Doc-Course in Geometric Analysis, Final workshop  2019/12  Oral presentation
  • Variational problem for anisotropic energy and its discretization  [Invited]
    Yoshiki Jikumaru
    Workshop on Submanifold theory in the wider sense  2019/08  Oral presentation
  • Variational problem for anisotropic surface energy and its discretization  [Not invited]
    Yoshiki Jikumaru; Miyuki Koiso
    新学術領域「次世代物質探索のための離散幾何学」研究成果報告会  2019/08  Oral presentation
  • Geometry of anisotropic surface energy  [Invited]
    Yoshiki Jikumaru
    9th International Congress on Industrial and Applied Mathematics, Geometric shape generation: integrability, variational analysis and applications  2019/07
  • Variational problem of anisotropic energy and its discretization  [Invited]
    Yoshiki Jikumaru
    Mini-Workshop on Differential Geometry and its Discretizations  2019/07  Oral presentation
  • Geometry of anisotropic surface energy and its discretization  [Invited]
    Yoshiki Jikumaru
    The 2nd International Conference ``Geometry of Submanifolds and Integrable Systems''  2019/03  Oral presentation
  • Geometry of anisotropic energy and their visualization  [Not invited]
    Yoshiki Jikumaru
    直観幾何学2019  2019/03  Oral presentation
  • On the embedded equilibrium surfaces for the anisotropic energy  [Not invited]
    Yoshiki Jikumaru
    PNU Math Forum 2017  2017/12  Oral presentation
  • D'Angelo type and Newton polyhedra  [Invited]
    Yoshiki Jikumaru
    GAIA Workshop on Complex Analysis  2017/02  Oral presentation
  • D'Angelo type and Newton polyhedra  [Not invited]
    Yoshiki Jikumaru
    多変数函数論冬セミナー  2016/12  Oral presentation
  • Newton polyhedra and D'Angelo types  [Not invited]
    Yoshiki Jikumaru
    第51回函数論サマーセミナー  2016/09  Oral presentation
  • dbar-Neumann operators and Levi problem  [Not invited]
    Yoshiki Jikumaru
    第50回函数論サマーセミナー  2015/09  Oral presentation

MISC

Awards & Honors

  • 2022/02 Japan Science and Technology Agency, AIP Network Lab. AIP challenge program
     On the unification of hanging membranes and membrane O surfaces based on the anisotropic curvatures 
    受賞者: Yoshiki Jikumaru
  • 2021/12 Forum "Math-for-Industry" 2021 "Excellent Poster Award"
     Differential geometry formulation of hanging membranes 
    受賞者: Yoshiki Jikumaru;Yohei Yokosuka

Research Grants & Projects

  • TBA
    Japan Society for the Promotion of Science:KAKENHI
    Date (from‐to) : 2024/04 -2029/03
  • Development of discrete surface theory for the shape generation in architectural surface design based on graphic statics
    Toyo University:2023年度井上円了記念助成
    Date (from‐to) : 2023/04 -2024/03
  • Analysis of hanging membranes based on geometric variational problem and integrable geometry
    Kyushu University:研究スタートプログラム
    Date (from‐to) : 2022/04 -2023/03
  • Discrete membrane O surface theory and graphic statics for a development of architectural surface design method
    Institute of Mathematics for Industry, Kyushu University:Joint Research Center for Advanced and Fundamental Mathematics-for -Industry
    Date (from‐to) : 2022/05 -2022/07 
    Author : Yohei Yokosuka; Kazuki Hayashi; Kentaro Hayakawa; Takanori Yagi; Shono Suzuki; Yusuke Sakai; Keisuke Mizutani
  • On the unification of hanging membranes and membrane O surfaces based on the anisotropic curvatures
    Japan Science and Technology Agency AIP Network Lab:AIP Challenge Program
    Date (from‐to) : 2021/06 -2022/03

Teaching Experience

  • Mathematics for INIAD 1A, 2B
    Toyo University
  • Probabilities and statistics for INIAD 1A, 2B
    Toyo University
  • Geometric Information Mathematics
    Fukuoka Institute of Technology
  • Matrices and determinants II
    Fukuoka University
  • Linear Algebra III
    Fukuoka Institute of Technology
  • Analysis III
    Fukuoka Institute of Technology
  • Matrices and determinants I
    Fukuoka University
  • Analysis II
    Fukuoka University
  • Analysis I
    Fukuoka University