collaborators

11 papers

math.NT2026

Some results on naive transcendence in the ring of integers modulo infinitely large primes

Toshiki Matsusaka, Shin-ichiro Seki

This paper presents various transcendence results in the ring of integers modulo infinitely large primes . In the ring , one can consider two notions of t…

math.NT2026

On finite analogues of Dobiński's formula and of Euler's constant via Gregory polynomials

Toshiki Matsusaka, Taichi Miyazaki, Shunta Yara

We study a finite analogue of Dobiński's formula, which is related to the Napier constant , and its Bessel-type generalizations. Furthermore, using Gregory polynomials, we exte…

math.NT2026

Poly-Bernoulli numbers from shifted log-sine integrals

Toshiki Matsusaka

In 1999, Arakawa and Kaneko introduced a zeta function whose special values at negative integers yield the poly-Bernoulli numbers and investigated its relation to multiple zeta val…

math.GT2025

On the Alexander polynomials of modular knots

Soon-Yi Kang, Toshiki Matsusaka, Kyungbae Park

Closed geodesics associated with indefinite binary quadratic forms, or equivalently with real quadratic irrationals, have long been studied as geometric

math.NT2025

The Fourier coefficients and singular moduli of the elliptic modular function , revisited

Toshiki Matsusaka

Kaneko's formula expresses the Fourier coefficients of the elliptic modular -function as finite sums of singular moduli. First published as a short article in 1996, it was prese…

math.NT2025

Denominator identity for the affine Lie superalgebra and indefinite theta functions

Toshiki Matsusaka, Miyu Suzuki

In 1994, Kac and Wakimoto found the denominator identity for classical affine Lie superalgebras, generalizing that for affine Lie algebras. As an application, they obtained power s…