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Croydon, David

Research Institute for Mathematical Sciences (RIMS) Associate Professor

Croydon, David
list
    Last Updated :2025/01/21

    Basic Information

    Affiliated programs (koza)

    • Graduate School of Science, 数学・数理解析専攻 解析数理講座, 准教授

    Academic Degree

    • Mathematics

    Research History

    • From Apr. 2019, To Present
      Kyoto University, Research Institute for Mathematical Sciences, Associate Professor
    • From Apr. 2018, To Mar. 2019
      Kyoto University, Department of Advanced Mathematical Sciences, Graduate School of Informatics, Associate Professor
    • From Jun. 2017, To Mar. 2018
      University of Warwick, Department of Statistics, Reader
    • From Sep. 2012, To May 2017
      University of Warwick, Department of Statistics, Associate Professor
    • From Sep. 2008, To Aug. 2012
      University of Warwick, Department of Statistics, Assistant Professor
    • From Sep. 2006, To Aug. 2008
      University of Warwick, Department of Statistics, Postdoctoral Research Fellow

    ID,URL

    Website(s) (URL(s))

    researchmap URL

    list
      Last Updated :2025/01/21

      Research

      Research Topics, Overview of the research

      • Research Topics

        Probability theory
      • Overview of the research

        David Croydon works in probability theory, with his main research interest being in diffusions on random fractals and how such processes can be constructed as scaling limits of related random walks on random graphs. He also has a growing interest in the behaviour of discrete integrable systems started from random initial conditions.

      Research Interests

      • discrete integrable systems
      • fractals
      • random walk
      • probability theory

      Research Areas

      • Natural sciences, Mathematical analysis

      Papers

      • Heat Kernel Fluctuations for Stochastic Processes on Fractals and Random Media
        Sebastian Andres; David Croydon; Takashi Kumagai
        Applied and Numerical Harmonic Analysis, 26 Jun. 2023, Peer-reviewed, Invited
      • Extremal regime for one-dimensional Mott variable-range hopping
        D. A. Croydon; R. Fukushima; S. Junk
        2023
      • Aging and sub-aging for one-dimensional random walks amongst random conductances
        D. A. Croydon; D. Kious; C. Scali
        2023
      • Heat kernel fluctuations and quantitative homogenization for the one-dimensional Bouchaud trap model
        S. Andres; D. A. Croydon; T. Kumagai
        2023
      • Scaling limit of critical percolation clusters on hyperbolic random half-planar triangulations and the associated random walks
        D. A. Croydon; E. Archer
        2023
      • Annealed transition density of simple random walk on a high-dimensional loop-erased random walk
        D. A. Croydon; D. Shiraishi; S. Watanabe
        2023
      • Correction to: Exact value of the resistance exponent for four dimensional random walk trace
        D. A. Croydon; D. Shiraishi
        Probability Theory and Related Fields, 05 Nov. 2022, Peer-reviewed
      • Biased random walk on supercritical percolation: anomalous fluctuations in the ballistic regime
        Adam M. Bowditch; David A. Croydon
        Electronic Journal of Probability, 01 Jan. 2022, Peer-reviewed
      • Spectral dimension of simple random walk on a long-range percolation cluster
        V. H. Can; D. A. Croydon; T. Kumagai
        Electronic Journal of Probability, 01 Jan. 2022, Peer-reviewed
      • Scaling limit for random walk on the range of random walk in four dimensions
        D. A. Croydon; D. Shiraishi
        Annales de l'Institut Henri Poincaré, Probabilités et Statistiques, 01 Feb. 2023, Peer-reviewed
      • On the Stationary Solutions of Random Polymer Models and Their Zero-Temperature Limits
        David A. Croydon; Makiko Sasada
        Journal of Statistical Physics, 25 Jun. 2022, Peer-reviewed
      • Quenched and averaged tails of the heat kernel of the two-dimensional uniform spanning tree
        M. T. Barlow; D. A. Croydon; T. Kumagai
        Probability Theory and Related Fields, Nov. 2021, Peer-reviewed
      • Generalized Hydrodynamic Limit for the Box–Ball System
        David A. Croydon; Makiko Sasada
        Communications in Mathematical Physics, Apr. 2021, Peer-reviewed
      • The Random Conductance Model with Heavy Tails on Nested Fractal Graphs
        David A. Croydon
        Fractal Geometry and Stochastics VI, 2021, Peer-reviewed
      • Bi-infinite Solutions for KdV- and Toda-Type Discrete Integrable Systems Based on Path Encodings
        David A. Croydon; Makiko Sasada; Satoshi Tsujimoto
        Mathematical Physics, Analysis and Geometry, 22 Oct. 2022, Peer-reviewed
      • Anomalous scaling regime for one-dimensional Mott variable-range hopping
        David A. Croydon; Ryoki Fukushima; Stefan Junk
        The Annals of Applied Probability, 01 Oct. 2023, Peer-reviewed
      • Detailed balance and invariant measures for discrete KdV- and Toda-type systems
        D. A. Croydon; M. Sasada
        Jul. 2020
      • Biased Random Walk on the Trace of Biased Random Walk on the Trace of …
        David Croydon; Mark Holmes
        Communications in Mathematical Physics, Apr. 2020, Peer-reviewed
      • Scaling limits of the three-dimensional uniform spanning tree and associated random walk
        O. Angel; D. A. Croydon; S. Hernandez-Torres; D. Shiraishi
        The Annals of Probability, 01 Nov. 2021, Peer-reviewed
      • The number of spanning clusters of the uniform spanning tree in three dimensions
        Omer Angel; David A. Croydon; Sarai Hernandez-Torres; Daisuke Shiraishi
        Proceeding of "The 12th Mathematical Society of Japan, Seasonal Institute (MSJ-SI) Stochastic Analysis, Random Fields and Integrable Probability.", Jan. 2021, Peer-reviewed, Invited
      • Discrete integrable systems and Pitman's transformation
        David A. Croydon; Makiko Sasada
        Proceeding of "The 12th Mathematical Society of Japan, Seasonal Institute (MSJ-SI) Stochastic Analysis, Random Fields and Integrable Probability.", Jan. 2021, Peer-reviewed, Invited
      • Dynamics of the ultra-discrete Toda lattice via Pitman's transformation
        David A. Croydon; Makiko Sasada; Satoshi Tsujimoto
        RIMS Kôkyûroku Bessatsu, 2020, Peer-reviewed, Invited
      • Duality between box-ball systems of finite box and/or carrier capacity
        David A. Croydon; Makiko Sasada
        RIMS Kôkyûroku Bessatsu, 2020, Peer-reviewed, Invited
      • Invariant measures for the box-ball system based on stationary Markov chains and periodic Gibbs measures
        David Croydon; Makiko Sasada
        Journal of Mathematical Physics, 2019, Peer-reviewed
      • An introduction to the trapping experienced by biased random walk on the trace of biased random walk
        David Croydon
        RIMS Kokyuroku, 2019
      • Dynamics of the Box-Ball System with Random Initial Conditions via Pitman’s Transformation
        David Croydon; Tsuyoshi Kato; Makiko Sasada; Satoshi Tsujimoto
        Memoirs of the American Mathematical Society, Mar. 2023, Peer-reviewed
      • Scaling limits of stochastic processes associated with resistance forms
        D. A. Croydon
        Ann. Inst. H. Poincare Probab. Statist., 2018, Peer-reviewed
      • CENTRAL LIMIT THEOREMS FOR THE SPECTRA OF CLASSES OF RANDOM FRACTALS
        Philippe H. A. Charmoy; David A. Croydon; Ben M. Hambly
        TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY, Dec. 2017, Peer-reviewed
      • Heat kernel estimates for FIN processes associated with resistance forms
        D.A. Croydon; B.M. Hambly; T. Kumagai
        Stochastic Processes and their Applications, Sep. 2019, Peer-reviewed
      • Quenched localisation in the Bouchaud trap model with slowly varying traps
        David A. Croydon; Stephen Muirhead
        PROBABILITY THEORY AND RELATED FIELDS, Jun. 2017, Peer-reviewed
      • An introduction to stochastic processes associated with resistance forms and their scaling limits
        David A. Croydon
        RIMS Kokyuroku, 2017
      • SUBSEQUENTIAL SCALING LIMITS OF SIMPLE RANDOM WALK ON THE TWO-DIMENSIONAL UNIFORM SPANNING TREE
        M. T. Barlow; D. A. Croydon; T. Kumagai
        ANNALS OF PROBABILITY, Jan. 2017, Peer-reviewed
      • Time-changes of stochastic processes associated with resistance forms
        David Croydon; Ben Hambly; Takashi Kumagai
        ELECTRONIC JOURNAL OF PROBABILITY, 2017, Peer-reviewed
      • Quenched localisation in the Bouchaud trap model with regularly varying traps
        David Croydon; Stephen Muirhead
        RIMS Kokyuroku Bessatsu, 2016, Peer-reviewed
      • QUENCHED INVARIANCE PRINCIPLES FOR RANDOM WALKS AND ELLIPTIC DIFFUSIONS IN RANDOM MEDIA WITH BOUNDARY
        Zhen-Qing Chen; David A. Croydon; Takashi Kumagai
        ANNALS OF PROBABILITY, Jul. 2015, Peer-reviewed
      • Functional limit theorems for the Bouchaud trap model with slowly varying traps
        David Croydon; Stephen Muirhead
        STOCHASTIC PROCESSES AND THEIR APPLICATIONS, May 2015, Peer-reviewed
      • Moduli of continuity of local times of random walks on graphs in terms of the resistance metric
        David A. Croydon
        Trans. Lond. Math. Soc., 2015, Peer-reviewed
      • Slow movement of a random walk on the range of a random walk in the presence of an external field
        David A. Croydon
        PROBABILITY THEORY AND RELATED FIELDS, Dec. 2013, Peer-reviewed
      • Biased random walk on critical Galton-Watson trees conditioned to survive
        D. A. Croydon; A. Fribergh; T. Kumagai
        PROBABILITY THEORY AND RELATED FIELDS, Oct. 2013, Peer-reviewed
      • Scaling Limit for the Random Walk on the Largest Connected Component of the Critical Random Graph
        David A. Croydon
        PUBLICATIONS OF THE RESEARCH INSTITUTE FOR MATHEMATICAL SCIENCES, Jun. 2012, Peer-reviewed
      • Convergence of mixing times for sequences of random walks on finite graphs
        D. A. Croydon; B. M. Hambly; T. Kumagai
        ELECTRONIC JOURNAL OF PROBABILITY, Jan. 2012, Peer-reviewed
      • Spectral asymptotics for stable trees
        David Croydon; Ben Hambly
        ELECTRONIC JOURNAL OF PROBABILITY, Nov. 2010, Peer-reviewed
      • SCALING LIMITS FOR SIMPLE RANDOM WALKS ON RANDOM ORDERED GRAPH TREES
        D. A. Croydon
        ADVANCES IN APPLIED PROBABILITY, Jun. 2010, Peer-reviewed
      • Random Walk on the Range of Random Walk
        David A. Croydon
        JOURNAL OF STATISTICAL PHYSICS, Jul. 2009, Peer-reviewed
      • HAUSDORFF MEASURE OF ARCS AND BROWNIAN MOTION ON BROWNIAN SPATIAL TREES
        David A. Croydon
        ANNALS OF PROBABILITY, May 2009, Peer-reviewed
      • Convergence of simple random walks on random discrete trees to Brownian motion on the continuum random tree
        David Croydon
        ANNALES DE L INSTITUT HENRI POINCARE-PROBABILITES ET STATISTIQUES, Dec. 2008, Peer-reviewed
      • Local Limit Theorems for Sequences of Simple Random Walks on Graphs
        D. A. Croydon; B. M. Hambly
        POTENTIAL ANALYSIS, Dec. 2008, Peer-reviewed
      • Random walks on Galton-Watson trees with infinite variance offspring distribution conditioned to survive
        David Croydon; Takashi Kumagai
        ELECTRONIC JOURNAL OF PROBABILITY, Aug. 2008, Peer-reviewed
      • Self-similarity and spectral asymptotics for the continuum random tree
        David Croydon; Ben Hambly
        STOCHASTIC PROCESSES AND THEIR APPLICATIONS, May 2008, Peer-reviewed
      • Volume growth and heat kernel estimates for the continuum random tree
        David A. Croydon
        PROBABILITY THEORY AND RELATED FIELDS, Jan. 2008, Peer-reviewed
      • The Hausdorff dimension of a class of random self-similar fractal trees
        D. A. Croydon
        ADVANCES IN APPLIED PROBABILITY, Sep. 2007, Peer-reviewed
      • Heat kernel fluctuations for a resistance form with non-uniform volume growth
        D. A. Croydon
        PROCEEDINGS OF THE LONDON MATHEMATICAL SOCIETY, May 2007, Peer-reviewed

      Awards

      • Dec. 2018
        International Consortium of Chinese Mathematicians, Distinguished Paper Award

      External funds: Kakenhi

      • Stochastic processes associated with resistance forms
        Grant-in-Aid for Scientific Research (C)
        Basic Section 12010:Basic analysis-related
        Kyoto University
        Croydon David
        From 01 Apr. 2019, To 31 Mar. 2024, Granted
        Mott hopping;Extremal process;Random walk;Localization;Random environment;random walk;percolation;subdiffusion;trapping;hear kernel estimates;uniform spanning tree;critical dimension;Mott random walk;heat kernel estimates;scaling limits;scaling limit;random walks;random graphs;fractals
      • Analysis of discrete Integrable systems by probability theory based on Pitman's transformation
        Grant-in-Aid for Scientific Research (B)
        Basic Section 12010:Basic analysis-related
        Kyoto University
        辻本 諭
        From 01 Apr. 2019, To 31 Mar. 2024, Granted
        離散可積分系;確率論;Pitman変換;箱玉系
      • Research on stochastic processes in random media
        Grant-in-Aid for JSPS Fellows
        Basic Section 12010:Basic analysis-related
        University of Tsukuba;Kyoto University
        From 08 Nov. 2019, To 31 Mar. 2022, Granted
        高分子模型;大偏差原理;自由エネルギー;パーコレーション;零温度極限
      • Random walks on random graphs in critical regimes
        Grant-in-Aid for Research Activity Start-up
        0201:Algebra, geometry, analysis, applied mathematics,and related fields
        Kyoto University
        Croydon David
        From 24 Aug. 2018, To 31 Mar. 2020, Project Closed
        random walks;random graphs;fractals;random walk;uniform spanning tree;percolation;scaling limit;fractal
      • Anomalous diffusions on disordered media
        Grant-in-Aid for Scientific Research (A)
        Waseda University;Kyoto University
        Takashi Kumagai
        From 01 Apr. 2017, To 31 Mar. 2022, Project Closed
        確率論;複雑系;数理物理;解析学;ポテンシャル論;統計力学
      • Analysis, geometry and their interplays on fractals and stochastic processes on them
        Grant-in-Aid for Scientific Research (B)
        Basic Section 12010:Basic analysis-related
        Kyoto University
        梶野 直孝
        From 01 Apr. 2022, To 31 Mar. 2027, Granted
        劣ガウス型熱核評価;フラクタル上のポテンシャル論;ランダムフラクタル;自己等角フラクタル;フラクタル上の確率熱方程式;2次元一般化Sierpinski carpet;(劣)ガウス型熱核評価;ランダム媒質中の確率過程;スケール極限;離散群上のランダムウォーク;調和測度;フラクタル上の確率過程
      • Stochastic Processes and Stochastic Analysis on Disordered Media
        Grant-in-Aid for Scientific Research (A)
        Medium-sized Section 12:Analysis, applied mathematics, and related fields
        Waseda University
        熊谷 隆
        From 01 Apr. 2022, To 31 Mar. 2027, Granted
        確率論;複雑系;数理物理;解析学;ポテンシャル論
      • Stochastic processes in random environments with inhomogeneous scaling limits
        Grant-in-Aid for Scientific Research (C)
        Basic Section 12010:Basic analysis-related
        Kyoto University
        Croydon David
        From 01 Apr. 2024, To 31 Mar. 2028, Granted
        random walks;random graphs;fractals;scaling limits;random fields
      • Analysis, geometry and their interplays on fractals and stochastic processes on them
        Grant-in-Aid for Scientific Research (B)
        Basic Section 12010:Basic analysis-related
        Kyoto University
        梶野 直孝
        From 01 Apr. 2022, To 31 Mar. 2027, Granted
        劣ガウス型熱核評価;フラクタル上のポテンシャル論;ランダムフラクタル;フラクタル上の確率過程;自己等角フラクタル;フラクタル上の確率熱方程式;2次元一般化Sierpinski carpet;(劣)ガウス型熱核評価;ランダム媒質中の確率過程;スケール極限;離散群上のランダムウォーク;調和測度

      External funds: others

      • Analysis of ultra-discrete systems based on Pitman’s transformation by probability theory
        Grant-in-Aid for Scientific Research (B)
        From 01 Apr. 2019, To 31 Mar. 2024
        Satoshi Tsujimoto
      • Anomalous diffusions on disordered media
        Grant-in-Aid for Scientific Research (A)
        From 01 Apr. 2017, To 31 Mar. 2022
        Takashi Kumagai
      • Stochastic processes in random media
        Grant-in-Aid for JSPS Fellows
        From 08 Nov. 2019, To 31 Mar. 2022
        Stefan Junk
      list
        Last Updated :2025/01/21

        Education

        Teaching subject(s)

        • From 01 Apr. 2024, To 31 Mar. 2025
          ILAS Seminar-E2
          Z002, Spring, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2024, To 31 Mar. 2025
          Second Course in Statistics-E2
          N816, Fall, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2024, To 31 Mar. 2025
          Mathematical Statistics-E2
          N815, Spring, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2024, To 31 Mar. 2025
          Mathematical Statistics-E2
          N815, Fall, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2024, To 31 Mar. 2025
          Seminar on Probability Theory b
          1308, Fall, Graduate School of Science, 3
        • From 01 Apr. 2024, To 31 Mar. 2025
          Seminar on Probability Theory a
          1307, Spring, Graduate School of Science, 3
        • From 01 Apr. 2024, To 31 Mar. 2025
          Seminar on Probability Theory c
          1309, Spring, Graduate School of Science, 3
        • From 01 Apr. 2024, To 31 Mar. 2025
          Seminar on Probability Theory d
          1310, Fall, Graduate School of Science, 3
        • From 01 Apr. 2023, To 31 Mar. 2024
          ILAS Seminar-E2
          Z002, Spring, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2023, To 31 Mar. 2024
          Second Course in Statistics-E2
          N816, Fall, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2023, To 31 Mar. 2024
          Mathematical Statistics-E2
          N815, Spring, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2023, To 31 Mar. 2024
          Mathematical Statistics-E2
          N815, Fall, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2023, To 31 Mar. 2024
          Seminar on Probability Theory a
          1307, Spring, Graduate School of Science, 3
        • From 01 Apr. 2023, To 31 Mar. 2024
          Seminar on Probability Theory b
          1308, Fall, Graduate School of Science, 3
        • From 01 Apr. 2023, To 31 Mar. 2024
          Seminar on Probability Theory d
          1310, Fall, Graduate School of Science, 3
        • From 01 Apr. 2023, To 31 Mar. 2024
          Seminar on Probability Theory c
          1309, Spring, Graduate School of Science, 3
        • From 01 Apr. 2022, To 31 Mar. 2023
          Mathematical Statistics-E2
          N815, Spring, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2022, To 31 Mar. 2023
          Seminar on Probability Theory d
          1310, Fall, Graduate School of Science, 3
        • From 01 Apr. 2022, To 31 Mar. 2023
          Seminar on Probability Theory b
          1308, Fall, Graduate School of Science, 3
        • From 01 Apr. 2022, To 31 Mar. 2023
          ILAS Seminar-E2
          Z002, Spring, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2022, To 31 Mar. 2023
          Second Course in Statistics-E2
          N816, Spring, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2022, To 31 Mar. 2023
          Seminar on Probability Theory a
          1307, Spring, Graduate School of Science, 3
        • From 01 Apr. 2022, To 31 Mar. 2023
          Seminar on Probability Theory c
          1309, Spring, Graduate School of Science, 3
        • From Apr. 2019, To Mar. 2020
          Function Theory of a Complex Variable-E2
          Spring, 全学共通科目
        • From Apr. 2019, To Mar. 2020
          ILAS Seminar-E2
          Spring, 全学共通科目
        • From Apr. 2019, To Mar. 2020
          Mathematical Statistics-E2
          Spring, 全学共通科目
        • From Apr. 2019, To Mar. 2020
          Mathematical Statistics-E2
          Fall, 全学共通科目
        • From Apr. 2019, To Mar. 2020
          Quest for Mathematics I-E2
          Spring, 全学共通科目
        • From Apr. 2019, To Mar. 2020
          Second Course in Statistics-E2
          Fall, 全学共通科目
        • From Apr. 2019, To Mar. 2020
          Seminar on Applied Analysis 1
          Year-long, 情報学研究科
        • From Apr. 2019, To Mar. 2020
          Topics in Applied Analysis I
          Fall, 情報学研究科
        • From Apr. 2019, To Mar. 2020
          Topics in Nonlinear Analysis A
          Fall, 情報学研究科
        • From Apr. 2020, To Mar. 2021
          ILAS Seminar-E2 :Introduction to Probability
          Spring, 全学共通科目
        • From Apr. 2020, To Mar. 2021
          Mathematical Statistics-E2
          Spring, 全学共通科目
        • From Apr. 2020, To Mar. 2021
          Mathematical Statistics-E2
          Fall, 全学共通科目
        • From Apr. 2020, To Mar. 2021
          Second Course in Statistics-E2
          Fall, 全学共通科目
        • From Apr. 2020, To Mar. 2021
          Topics in Applied Analysis I
          Fall, 情報学研究科
        • From Apr. 2020, To Mar. 2021
          Seminar on Probability Theory a
          Spring, 理学研究科
        • From Apr. 2020, To Mar. 2021
          Seminar on Probability Theory b
          Fall, 理学研究科
        • From Apr. 2020, To Mar. 2021
          Seminar on Probability Theory c
          Spring, 理学研究科
        • From Apr. 2020, To Mar. 2021
          Seminar on Probability Theory d
          Fall, 理学研究科
        • From Apr. 2021, To Mar. 2022
          ILAS Seminar-E2 :Introduction to Probability
          Spring, 全学共通科目
        • From Apr. 2021, To Mar. 2022
          Mathematical Statistics-E2
          Spring, 全学共通科目
        • From Apr. 2021, To Mar. 2022
          Mathematical Statistics-E2
          Fall, 全学共通科目
        • From Apr. 2021, To Mar. 2022
          Second Course in Statistics-E2
          Fall, 全学共通科目
        • From Apr. 2021, To Mar. 2022
          Seminar on Probability Theory a
          Spring, 理学研究科
        • From Apr. 2021, To Mar. 2022
          Seminar on Probability Theory b
          Fall, 理学研究科
        • From Apr. 2021, To Mar. 2022
          Seminar on Probability Theory c
          Spring, 理学研究科
        • From Apr. 2021, To Mar. 2022
          Seminar on Probability Theory d
          Fall, 理学研究科

        Participation in PhD Defense

        • Convergence of processes time-changed by Gaussian multiplicative chaos
          OOI TAKUMU, Graduate School of Science, Chief Examiner
          25 Mar. 2024
        • Some inequalities between Ahlfors regular conformal dimension and spectral dimensions for resistance forms
          SASAYA KOHEI, Graduate School of Science, Sub-chief Examiner
          23 Mar. 2023

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