Updated on 2025/10/08

写真a

 
ARAI ZIN
 
Organization
School of Computing Professor
Title
Professor
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Degree

  • Doctor of Science ( 2003.3   Kyoto University )

Research Interests

  • 複素力学系

  • 双曲性

  • トポロジー

  • カオス

  • 位相的方法

  • 分岐

  • コンレイ指数

  • モノドロミー

  • 反可積分極限

  • 計算ホモロジー理論

  • エノン写像

  • 力学系

  • ホモクリニック分岐

  • 計算機援用証明

Research Areas

  • Natural Science / Applied mathematics and statistics

  • Natural Science / Geometry

  • Natural Science / Mathematical analysis

Research History

  • Tokyo Institute of Technology   School of Computing   Professor

    2023.4

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  • Chubu University   Academy of Emerging Sciences   Professor

    2017.4 - 2023.3

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    Country:Japan

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  • Hokkaido University   Faculty of Science   Associate Professor

    2011.9 - 2017.3

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    Country:Japan

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  • Hokkaido University   Creative Research Institution   Tenure-track assistant professor

    2008.8 - 2011.8

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    Country:Japan

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  • Kyoto University   Faculty of Science   Assistant Professor

    2003.7 - 2008.7

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    Country:Japan

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Professional Memberships

  • Society for Industrial and Applied Mathematics

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  • The Mathematical Society of Japan

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Papers

  • Macaque progressions: passing order during single-file movements reflects the social structure of a wild stump-tailed macaque group Reviewed

    Aru Toyoda, Tamaki Maruhashi, Suchinda Malaivijitnond, Kazunari Matsudaira, Zin Arai, Ikki Matsuda, Hiroki Koda

    Primates   64 ( 3 )   351 - 359   2023.2

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s10329-023-01055-y

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    Other Link: https://link.springer.com/article/10.1007/s10329-023-01055-y/fulltext.html

  • Agent-based simulation for reconstructing social structure by observing collective movements with special reference to single-file movement Reviewed International journal

    Hiroki Koda, Zin Arai, Ikki Matsuda

    PLOS ONE   15 ( 12 )   2020.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1371/journal.pone.0243173

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  • Visualization of the Dynamics Effect: Projection of on-the-Fly Trajectories to the Subspace Spanned by the Static Reaction Path Network Reviewed International journal

    Takuro Tsutsumi, Yuriko Ono, Zin Arai, Tetsuya Taketsugu

    JOURNAL OF CHEMICAL THEORY AND COMPUTATION   16 ( 7 )   4029 - 4037   2020.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.jctc.0c00018

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  • Visualization of the Intrinsic Reaction Coordinate and Global Reaction Route Map by Classical Multidimensional Scaling Reviewed

    Takuro Tsutsumi, Yuriko Ono, Zin Arai, Tetsuya Taketsugu

    JOURNAL OF CHEMICAL THEORY AND COMPUTATION   14 ( 8 )   4263 - 4270   2018.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.jctc.8b00176

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  • On Parameter Loci of the H,non Family

    Zin Arai, Yutaka Ishii

    COMMUNICATIONS IN MATHEMATICAL PHYSICS   361 ( 2 )   343 - 414   2018.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00220-018-3174-0

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  • Boundary of the Horseshoe Locus for the Henon Family'

    Zin Arai, Yutaka Ishii, Hiroki Takahasi

    SIAM JOURNAL ON APPLIED DYNAMICAL SYSTEMS   17 ( 3 )   2234 - 2248   2018

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1137/18M1174684

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  • On loops in the hyperbolic locus of the complex Henon map and their monodromies

    Zin Arai

    PHYSICA D-NONLINEAR PHENOMENA   334   133 - 140   2016.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.physd.2016.02.006

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  • Computability and complexity of Julia sets: a review

    Kota Hiratsuka, Yuzuru Sato, Zin Arai

    IEICE NONLINEAR THEORY AND ITS APPLICATIONS   5 ( 4 )   410 - 423   2014

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/nolta.5.410

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  • On Computational Topology and its Applications

    Arai Zin

    Bulletin of the Japan Society for Industrial and Applied Mathematics   23 ( 1 )   39 - 42   2013

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    Language:Japanese   Publisher:The Japan Society for Industrial and Applied Mathematics  

    DOI: 10.11540/bjsiam.23.1_39

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  • Special section on recent progress in verified numerical computations

    Zin Arai, Takeshi Ogita, Yoshitaka Watanabe

    IEICE NONLINEAR THEORY AND ITS APPLICATIONS   4 ( 1 )   1 - 1   2013

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  • A rigorous numerical algorithm for computing the linking number of links

    Zin Arai

    IEICE NONLINEAR THEORY AND ITS APPLICATIONS   4 ( 1 )   104 - 110   2013

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/nolta.4.104

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  • Capturing the Global Behavior of Dynamical Systems with Conley-Morse Graphs Reviewed

    Zin Arai, Hiroshi Kokubu, Ippei Obayashi

    Advances in Cognitive Neurodynamics (III)   665   2013

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Springer Netherlands  

    DOI: 10.1007/978-94-007-4792-0_89

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  • Mayer-Vietoris sequences and coverage problems in sensor networks

    Zin Arai, Kazunori Hayashi, Yasuaki Hiraoka

    Japan Journal of Industrial and Applied Mathematics   28 ( 2 )   237 - 250   2011.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s13160-011-0039-8

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  • Recent Development in Rigorous Computational Methods in Dynamical Systems

    Zin Arai, Hiroshi Kokubu, Pawel Pilarczyk

    JAPAN JOURNAL OF INDUSTRIAL AND APPLIED MATHEMATICS   26 ( 2-3 )   393 - 417   2009.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/BF03186541

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  • A Database Schema for the Analysis of Global Dynamics

    Zin Arai, William Kalies, Hiroshi Kokubu, Konstantin Mischaikow, Hiroe Oka, Pawel Pilarczyk

    NUMERICAL ANALYSIS AND APPLIED MATHEMATICS, VOLS 1 AND 2   1168   918 - +   2009

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  • A Database Schema for the Analysis of Global Dynamics of Multiparameter Systems

    Zin Arai, William Kalies, Hiroshi Kokubu, Konstantin Mischaikow, Hiroe Oka, Pawel Pilarczyk

    SIAM JOURNAL ON APPLIED DYNAMICAL SYSTEMS   8 ( 3 )   757 - 789   2009

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1137/080734935

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  • On hyperbolic plateaus of the Henon map

    Zin Arai

    EXPERIMENTAL MATHEMATICS   16 ( 2 )   181 - 188   2007

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1080/10586458.2007.10128992

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  • Rigorous computations of homoclinic tangencies

    Zin Arai, Konstantin Mischaikow

    SIAM JOURNAL ON APPLIED DYNAMICAL SYSTEMS   5 ( 2 )   280 - 292   2006

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1137/050626429

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MISC

  • On topological mehtods[methods] for dynamical systems and fluid mechanics (Collective Dynamics in Dynamical Systems : Across the border of preserving and dissipative systems)

    ARAI Zin

    RIMS Kokyuroku   1827   18 - 23   2013.3

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    Language:Japanese   Publisher:Kyoto University  

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  • Monodromy and bifurcations of the Henon map (Research on Complex Dynamics and Related Fields)

    ARAI Zin

    RIMS Kokyuroku   1762   134 - 135   2011.9

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  • Chaos and structural stability: a computational approach

    ARAI Zin

    Systems, control and information   55 ( 3 )   82 - 87   2011.3

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    Language:Japanese   Publisher:Institute of Systems, Control and Information Engineers  

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  • 26pGT-8 Towards the Global Computational Theory of Dynamical Systems

    Arai Zin

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   392 - 392   2011.3

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  • Mayer-Vietoris完全系列のセンサーネットワーク被覆問題への応用 (数値解析における理論・手法・応用)

    平岡裕章, 荒井迅, 林和則

    数理解析研究所講究録   1638   118 - 129   2009.4

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    Language:Japanese   Publisher:京都大学  

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  • Algebraic topology and sensor networks

    HIRAOKA Yasuaki, ARAI Zin, HAYASHI Kazunori

    IEICE technical report   108 ( 473 )   51 - 56   2009.3

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    Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

    Wireless sensor network, which consists of a number of sensor nodes with signal processing and communication capabilities, has been drawing a lot of research interest. In recent years, R. Ghrist et al. have developed algebraic topological methods for the analysis of sensor networks. At first in this article, their pioneering works on homology groups and covering problems are explained in detail. Then, our approach in order to apply Ghrist's ideas to practical scenarios is presented.

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  • Algebraic topology and sensor networks

    HIRAOKA Yasuaki, ARAI Zin, HAYASHI Kazunori

    IEICE technical report   108 ( 474 )   51 - 56   2009.3

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    Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

    Wireless sensor network, which consists of a number of sensor nodes with signal processing and communication capabilities, has been drawing a lot of research interest. In recent years, R. Ghrist et al. have developed algebraic topological methods for the analysis of sensor networks. At first in this article, their pioneering works on homology groups and covering problems are explained in detail. Then, our approach in order to apply Ghrist's ideas to practical scenarios is presented.

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  • Algebraic topology and sensor networks

    HIRAOKA Yasuaki, ARAI Zin, HAYASHI Kazunori

    IEICE technical report   108 ( 472 )   51 - 56   2009.3

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    Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

    Wireless sensor network, which consists of a number of sensor nodes with signal processing and communication capabilities, has been drawing a lot of research interest. In recent years, R. Ghrist et al. have developed algebraic topological methods for the analysis of sensor networks. At first in this article, their pioneering works on homology groups and covering problems are explained in detail. Then, our approach in order to apply Ghrist's ideas to practical scenarios is presented.

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  • Mayer-Vietoris完全系列のセンサーネットワーク被覆問題への応用 (生命現象と関連した非線形問題の数理)

    荒井迅, 林和則, 平岡裕章

    数理解析研究所講究録   1616   41 - 58   2008.10

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  • Algebraic topology and sensor networks

    HIRAOKA Yasuaki, ARAI Zin, HAYASHI Kazunori

    IEICE technical report   108 ( 54 )   17 - 22   2008.5

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    Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

    Wireless sensor network, which consists of a number of sensor nodes with signal processing and communication capabilities, has been drawing a lot of research interest. In recent years, R. Ghrist et al. have developed algebraic topological methods for the analysis of sensor networks. At first in this article, their pioneering works on homology groups and covering problems are explained in detail. Then, our approach in order to apply Ghrist's ideas to practical scenarios is presented.

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  • On Applications of Computational Homology to Dynamical Systems

    Arai Zin

    Bulletin of the Japan Society for Industrial and Applied Mathematics   18 ( 1 )   34 - 40   2008.3

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    DOI: 10.11540/bjsiam.18.1_34

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  • Hyperbolic parameters and the monodromy of Henon maps(Complex Dynamics and its Related Topics)

    ARAI Zin

    RIMS Kokyuroku   1537   65 - 76   2007.2

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  • On Loops in the Hyperbolic Loci of the Complex Henon Maps(Complex Dynamics and its Related Fields)

    ARAI Zin

    RIMS Kokyuroku   1494   132 - 142   2006.5

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  • On Applications of Rigorous Computing to Dynamical Systems(New Development of Dynamical Systems with Topological and Computational Methods)

    ARAI Zin

    RIMS Kokyuroku   1485   1 - 13   2006.4

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  • 計算機支援による離散力学系の解析(<小特集>力学系の位相計算理論)

    荒井迅

    応用数理   15 ( 2 )   108 - 119   2005.6

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    Publisher:日本応用数理学会  

    This paper is a survey article on computer assisted analysis of discrete dynamical systems. The focus is on the application of the Conley index theory. We discuss the definition and some properties of the Conley index and how to perform rigorous computations of it on a computer. We sketch the steps of our algorithm for computing the Conley index, which is a combination of computational homology theory and interval arithmetic. Finally, we propose a rigorous computational method for detecting homoclinic tangencies in a discrete dynamical system as an example of our argument. The problem of fi...

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Research Projects

  • Development of a new method for data science via the fusion of dynamical systems and computational topology

    Grant number:19KK0068  2019.10 - 2025.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))  Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

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    Grant amount:\18330000 ( Direct Cost: \14100000 、 Indirect Cost:\4230000 )

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  • Towards new mathematical tools for understanding chemical reaction networks

    Grant number:18K18723  2018.6 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)  Grant-in-Aid for Challenging Research (Exploratory)

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    Grant amount:\6370000 ( Direct Cost: \4900000 、 Indirect Cost:\1470000 )

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  • On the creation of chaos in higher dimensions

    Grant number:18H01138  2018.4 - 2023.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

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    Grant amount:\17030000 ( Direct Cost: \13100000 、 Indirect Cost:\3930000 )

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  • Applications of entropy compression algorithms to dynamical systems and fluid mechanics

    Grant number:15K04986  2015.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    ARAI Zin

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    Grant amount:\4680000 ( Direct Cost: \3600000 、 Indirect Cost:\1080000 )

    Using recent information theoretic methods such as the succinct data structure, we have developed some algorithms for improving the computational capability of graph theoretical methods in dynamical systems and fluid mechanics. These algorithms enable us to use compressed and memory-efficient data structures for computing the structure of the invariant sets of dynamical systems so that we can handle more practical and higher dimensional problems.
    We also studied the relation between the information theoretic invariants and topological invariants of the system. In particular, we have shown that, for some dynamical systems, there is an explicit relation between the information theoretic entropy of the data required for the graph representation of the system and the topological entropy of the system.

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  • Toward a new approach to transient dynamics

    Grant number:23684002  2011.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (A)  Grant-in-Aid for Young Scientists (A)

    ARAI Zin

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    Grant amount:\18720000 ( Direct Cost: \14400000 、 Indirect Cost:\4320000 )

    For the study of transient behaviors of dynamical systems on non-invariant set such as transient chaos, we develop a numerical method based on graph clustering algorithms. We also develop an algorithm to construct pseudo-Lyapunov functions, an analog of Lyapunov function, based on optimization algorithms. This enables us to study a generalization of Conley-Morse decomposition to dynamical systems having no Lyapunov function. These algorithms are successfully applied to dynamical systems including non-linear Leslie model and also to numerical simulations of 2-dimensional fluid flows.

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  • 位相幾何学的手法と計算機を利用した力学系の解析

    Grant number:17740054  2005 - 2007

    日本学術振興会  科学研究費助成事業 若手研究(B)  若手研究(B)

    荒井 迅

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    Grant amount:\3500000 ( Direct Cost: \3500000 )

    本年度は、昨年までの研究をさらに押し進め、双曲性証明アリゴリズムの改良や、その応用、またモノドロミー理論の展開を行なった。双曲性証明アルゴリズムの改良では、グラフ理論的アルゴリズムの見直しを行なうことでより高速かつ安定した計算時間での証明が行なえるようになり、またメモリの使用量を減らすためにsuccinct data structureの実装も取り入れた。このアルゴリズムの応用としては、昨年までに引き続き非線形レスリーモデルの解析を進めるとともに、九州大学の石井豊氏と共同でエノン写像の最大エントロピー領域の境界の解析も始めた。これに関しては、双曲性証明アルゴリズムを用いる部分はほぼ完成しており、もう一つの鍵であるcrossed mapping conditionを検証する段階に達している。さらに、面積保存写像における周期倍分岐の極限点付近での一様双曲性についても研究を進め、まだ極限点の直後における双曲性の証明には至っていないものの、その近傍における非双曲性の強さに関する結果を得ている。モノドロミー理論の展開については、モノドロミーと分岐の関係を調べることで一種のforcing理論を構築することを目指し、とくに周期の低い周期点の場合に、分岐のタイプと、その分岐がモノドロミーに引き起す作用の関係を調べた。また、台湾Academia SinicaのYi-Chiuan Chen氏との共同研究では、従来直線的なパラメータでしか考えられていなかったanti-integrable limitの理論に対し、パラメータを曲線上に採る拡張を試みた。とくにエノン写像では、曲線上にパラメータを採ることで、従来の解析では見えてこなかった構造が得られることを見い出した。

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  • 位相幾何学的手法による力学系の代数的表現およびその応用

    Grant number:03J04572  2003 - 2005

    日本学術振興会  科学研究費助成事業 特別研究員奨励費  特別研究員奨励費

    荒井 迅

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    Grant amount:\1100000 ( Direct Cost: \1100000 )

    本研究は力学系の構造を位相幾何学的手法により代数化する方法と,それを用いた分岐現象の解析を目的として行なわれたが,とくにホモクリニック接触という重要な分岐について,それを解析する手法を確立することに成功した.また,この手法を応用して,Henon写像族におけるホモクリニック接触の発生を具体的なパラメータ値において示すことができた.
    本研究により確立された理論では,与えられて力学系での接触現象を,その力学系から導かれた射影バンドル上でのconnecting orbitの存在に結び付ける議論と,connecting orbitの存在を証明するために用いるConley指数という位相幾何学的な不変量を用いた議論が本質的である.一方,具体例においてConley指数を計算するために,区間演算による精度保証付き数値計算や,計算ホモロジー理論などもこの手法に導入された.
    また,この手法によって存在が証明された接触について,それが非退化であることも証明することができた.非退化なホモクリニック接触がNewhouse現象やストレンジアトラクターの存在を帰結することが既に知られていることから,この手法によってHenon写像族におけるそれらの現象の発生を結論することができた.
    さらなる応用として,偏微分方程式や生物学由来のKot-SchafferモデルなどにおけるNewhouse現象やストレンジアトラクターの存在も同様の議論で証明できると期待され,現在その研究が進行中である.

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