Welcome to Kôhei Sasaya's Homepage.

I am a postdoctral researcher at the University of Tokyo (JSPS PD). I specialize in analysis and related geometry on Fractals.
Keywords: fractal, quasisymmetry, Ahlfors regular conformal dimension, spectral dimension, p-energy form, energy measure, resistance form, Dirichlet form.

Preprints
1. K. Sasaya, Construction of p-energy measures associated with strongly local p-energy forms, 2025.
2. K. Sasaya, Some relation between spectral dimension and Ahlfors regular conformal dimension on infinite graphs, 2021.

Refereed papers
1. K. Sasaya, Some inequalities between Ahlfors regular conformal dimension and spectral dimensions for resistance forms. Potential Anal. 61 (2024), 347--377.
2. K. Sasaya, Systems of dyadic cubes of complete, doubling, uniformly perfect metric spaces without detours. Colloq. Math. 172 (2023), no.1, 49--64.
3. K. Sasaya, Ahlfors regular conformal dimension of metrics on infinite graphs and spectral dimension of the associated random walks. J. Fractal. Geom. 9 (2022), no.1--2, 89--128.

CV
Research experience
2024.4--present Project Researcher, the University of Tokyo (JSPS research fellow PD)
2023.4--2024.3 RIMS project fellow (for "Stochastic Processes and Related Fields"), Kyoto University
2020.4--2023.3 JSPS research fellow (DC1)

Education
2023.3 Ph.D. of Science, Kyoto University
2020.3 M.Sc., Kyoto University
2018.3 B.Sc., Kyoto University

Kôhei Sasaya
Project Researcher (Postdoc.)
E-mail: sasaya(at)g.ecc.u-tokyo.ac.jp
ORCID: 0000-0002-8874-0243
Tel.: (+81) 3-5465-7001 (main number of the department).
Address: Graduate School of Mathematical Sciences, The University of Tokyo, Tokyo, 153-8914, Japan
Office: Room 204, Graduate School of Mathematical Sciences Bldg. (Bldg. No. 53 in this map ), but mainly remote-working at home/cafes.