Publications

1. On the Rasmussen-Tamagawa conjecture for abelian fivefolds
   accepted for publication in Mathematical Research Letters, 2026. arXiv: 2510.14306
2. On the factorization of certain Kummer characters arising from once-punctured elliptic curves with complex multiplication (joint work with Yuki Goto)
   International Journal of Number Theory, Vol. 22, No. 01, pp. 1-24, 2026. arXiv: 2412.18846
3. On Kummer characters arising from Galois actions on the pro-p fundamental groups of once-punctured CM elliptic curves
   Research in Number Theory, Volume 11, article number 38, pp. 1-30, 2025. arXiv: 2312.04175
4. The 𝔭-primary Uniform Boundedness Conjecture for Drinfeld Modules
   International Journal of Number Theory, Vol. 20, No. 05, pp. 1233-1263, 2024. RIMS preprint: 1927
5. On isogeny characters of Drinfeld modules of rank two
   Mathematische Zeitschrift, Volume 301, pp. 455–470, 2022. RIMS preprint: 1947-revision

Preprints

1. A CM Elliptic Analogue of the Coleman-Ihara Formula (joint work with Yuki Goto)
   submitted, 2026.
2. A note on two-torsions in the outer automorphism groups of absolute Galois groups of mixed-characteristic local fields
   Note: the paper has been withdrawn due to a crucial error in a reference. See this note .
3. On graded Lie algebras associated to once-punctured elliptic curves with complex multiplication
   19 pages, in revision, 2026. arXiv: 2602.00615
4. On the kernels of the pro-p outer Galois representations associated to once-punctured CM elliptic curves
   30 pages, submitted, 2023. arXiv: 2312.04196

Proceedings

1. Drinfeld 加群の𝔭冪ねじれ点に対する普遍上界予想について
   数理解析研究所講究録別冊 に論文受理済(査読有).
2. 一点抜きCM楕円曲線に付随する副p外Galois表現の核について
   数理解析研究所講究録(代数的整数論とその周辺2023), No. 2295, 12 pages, 2024.

Others

1. Note on the last portion of Chapter 7 of Neukirch-Schmidt-Wingberg
   Also check the errata of NSW.
2. Note on Gross's factorization theorem for Katz's two-variable p-adic L-function
3. On certain bases of finite fields and their application to rational points on Drinfeld modular curves
   This note provides a partial solution to my old conjecture concerning Drinfeld modular curves.