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Yamato Kosuke
山戸　康祐
Yamato Kosuke
山戸　康祐
Graduate School of Engineering Science　Department of Systems Innovation, Assistant Professor

keyword Markov processes，Branching processes，Yaglom limit，Quasi-stationary distributions，Limit theorems，Lévy processes，Diffusion processes，Stochastic processes，Probability theory

Research History 3

  1. 2024/04 - Present
    Osaka University　Graduate School of Engineering Science Department of Systems Innovation Division of Mathematical Science for Social Systems　Assistant professor

  2. 2023/04 - 2024/03
    University of Tsukuba　Faculty of Pure and Applied Sciences　Postdoctoral Fellowship of Japan Society for the Promotion of Science

  3. 2022/04 - 2023/03
    Kyoto University　Graduate School of Science　Postdoctoral Fellowship of Japan Society for the Promotion of Science

Education 3

  1. Kyoto University　Graduate School of Science　Department of Mathematics

    2019/04 - 2022/03

  2. Kyoto University　Graduate School of Science　Department of Mathematics

    2017/04 - 2019/03

  3. Kyoto University　Faculty of Science

    2013/04 - 2017/03

Professional Memberships 1

  1. 日本数学会

Research Areas 1

  1. Natural sciences / Basic analysis / Probability theory

Papers 7

  1. Existence of quasi-stationary distributions for downward skip-free Markov chains

    Kosuke Yamato

    Stochastic Processes and their Applications　2025/05　Research paper (scientific journal)

  2. Reproduction of initial distributions from the first hitting time distribution for birth-and-death processes

    Kosuke Yamato, Kouji Yano

    Bernoulli　Vol. 30　No. 2　p. 936-960　2024/05/01　Research paper (scientific journal)

    Publisher: Bernoulli Society for Mathematical Statistics and Probability

  3. Renewal Dynamical Approach for Non-Minimal Quasi-Stationary Distributions of One-Dimensional Diffusions

    Kosuke Yamato

    Journal of Theoretical Probability　Vol. 37　No. 1　p. 533-548　2023/05/04　Research paper (scientific journal)

    Publisher: Springer Science and Business Media LLC

  4. Existence of quasi-stationary distributions for spectrally positive Lévy processes on the half-line

    Kosuke Yamato

    Latin American Journal of Probability and Mathematical Statistics　Vol. 20　p. 629-643　2023/03　Research paper (scientific journal)

  5. A UNIFYING APPROACH TO NON-MINIMAL QUASI-STATIONARY DISTRIBUTIONS FOR ONE-DIMENSIONAL DIFFUSIONS

    Yamato, K.

    Journal of Applied Probability　Vol. 59　No. 4　p. 1106-1128　2022/12　Research paper (scientific journal)

    Publisher: Cambridge University Press (CUP)

  6. Fluctuation scaling limits for positive recurrent jumping-in diffusions with small jumps

    Yamato, K., Yano, K.

    Journal of Functional Analysis　Vol. 279　No. 7　p. 108655-108655　2020/10　Research paper (scientific journal)

    Publisher: Elsevier {BV}

  7. Aging arcsine law in Brownian motion and its generalization

    Akimoto, T., Sera, T., Yamato, K., Yano, K.

    Physical Review E　Vol. 102　No. 3　2020/09/02　Research paper (scientific journal)

    Publisher: American Physical Society ({APS})