Research

Research summary

Publications

Spatial scale of agglomeration and dispersion: Number, spacing, and the spatial extent of cities.
Journal of Urban Economics, forthcoming. (2026)
(with T. Akamatsu, T. Mori, Y. Takayama) [paper] [Codes] [DP2017a] [DP2017b]
Equilibrium refinement for a model of non-monocentric internal structures of cities: A potential game approach.
Journal of Economic Theory (2020)
(with T. Akamatsu) [paper]
First-best dynamic assignment of commuters with endogenous heterogeneities in a corridor network.
Transportation Research Part B: Methodological (2018)
(with H. Fu, T. Akamatsu) [paper]
Harris and Wilson (1978) model revisited: The spatial period-doubling bifurcation in an urban retail model.
Journal of Regional Science (2016)
(with T. Akamatsu, Y. Takayama) [paper]

Other articles (5)

Time evolution of city distributions in Germany: Group-theoretic spectrum analysis.
Networks and Spatial Economics (2022)
(with K. Ikeda, Y. Takayama) [paper]
Perturbed cusp catastrophe in a population game: Spatial economics with locational asymmetries.
Journal of Regional Science (2022)
(with K. Ikeda, J. M. Gaspar, Y. Takayama) [paper]
Model-based analysis on social acceptability and feasibility of a focused protection strategy against the COVID-19 pandemic.
Scientific Reports (2021)
(with T. Akamatsu, T. Nagae, K. Satsukawa, T. Sakai, D. Mizutani) [paper]
Breaking and sustaining bifurcations in S_N-invariant equidistant economy.
International Journal of Bifurcation and Chaos (2021)
(with H. Aizawa, K. Ikeda, J. M. Gaspar) [paper]
Spatio-temporal analysis of gasoline shortages in the Tohoku region after the Great East Japan Earthquake.
Journal of JSCE (2013)
(with T. Akamatsu, T. Nagae, H. Yamaguchi) [paper]

Discussion Papers

Origin of power laws and their spatial fractal structure for city-size distributions (2024) [paper]
(with T. Mori, T. Akamatsu, and Y. Takayama)
Sampling logit equilibrium and endogenous payoff distortion (2026) [paper] [slides]
Most likely retail agglomeration patterns (2025) (with T. Akamatsu and Y. Kogure)
Innovation, spillovers and economic geography (2025) (with J. M. Gaspar)
Production externalities and dispersion process in a multi-region economy (2021) (with J. M. Gaspar)

Works in Progress

Understanding regional dynamics (2025) [draft] [slides]
Social interactions, technological externalities, and urban spatial structure (with H. Konishi)
Non-monocentric urban spatial structure in two dimensions (with T. Akamatsu, T. Sakai)

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