activity
20142025
most citedModular hierarchical and power-law small-world networks bear structural optima for minimal first passage times and cover time

8 citations · 35 across the 37 of their papers we have counts for

collaborators

43 papers

math.NT2025

On the uniform distribution modulo of zeros and -points of zeta functions

Hideki Murahara, Tomokazu Onozuka

Fujii gave five sufficient conditions for the uniform distribution modulo of the sequence , where runs over the imaginary parts of the non-trivial zeros of th…

math.NT2025

A note on order estimates of the -analogue of the Riemann zeta function

Hideki Murahara, Tomokazu Onozuka

At the first step of studying order estimates for the -analogue of the Riemann zeta function, we estimate bounds for it on vertical lines for a fixed parameter .

math.NT2025

On the mean values of the Barnes multiple zeta function

Takashi Miyagawa, Hideki Murahara

The asymptotic behavior of the mean values of multiple zeta functions is of significant interest due to its close connection with the Riemann zeta function. In this paper, we estab…

math.NT2024

Ohno relation for regularized refined symmetric multiple zeta values

Minoru Hirose, Hideki Murahara, Shingo Saito

The Ohno relation is one of the most celebrated results in the theory of multiple zeta values, which are iterated integrals from to . In a previous paper, the authors genera…

math.NT2023

Asymptotic coefficients of multiple zeta functions at the origin and generalized Gregory coefficients

Toshiki Matsusaka, Hideki Murahara, Tomokazu Onozuka

Due to their singularities, multiple zeta functions behave sensitively at non-positive integer points. In this article, we focus on the asymptotic behavior at the origin $(0,\dots,…

math.NT2023

Multiple zeta-star values for indices of infinite length

Minoru Hirose, Hideki Murahara, Tomokazu Onozuka

In this paper, we consider infinite-length versions of multiple zeta-star values. We give several explicit formulas for the infinite-length versions of multiple zeta-star values. W…

math.NT2023

On the asymptotic behavior of the double zeta function for large negative indices

Minoru Hirose, Hideki Murahara, Tomokazu Onozuka

In this paper, we investigate an asymptotic behavior of the double zeta function of Euler-Zagier type for indices with large negative real parts.

math.NT2022

Interpolated polynomial multiple zeta values of fixed weight, depth, and height

Minoru Hirose, Hideki Murahara, Shingo Saito

We define the interpolated polynomial multiple zeta values as a generalization of all of multiple zeta values, multiple zeta-star values, interpolated multiple zeta values, symmetr…

math.NT2022

Rooted tree maps for multiple -values from a perspective of harmonic algebras

Hideki Murahara, Tatsushi Tanaka, Noriko Wakabayashi

In this paper, we show the image of rooted tree maps themselves forms a subspace of the kernel of the evaluation map of multiple -values. For its proof, we define the diamond pr…

math.NT2022

Integral expressions for Schur multiple zeta values

Minoru Hirose, Hideki Murahara, Tomokazu Onozuka

Nakasuji, Phuksuwan, and Yamasaki defined the Schur multiple zeta values and gave iterated integral expressions of the Schur multiple zeta values of the ribbon type. This paper gen…

math.NT2022

-adic symmetric multiple zeta values for indices in which and appear alternately

Minoru Hirose, Hideki Murahara, Shingo Saito

We consider the symmetric multiple zeta values in without modulo reduction for indices in which and appear alternately. We investigate those values th…

math.NT2021

Asymptotic behavior of the Hurwitz-Lerch multiple zeta function at non-positive integer points

Hideki Murahara, Tomokazu Onozuka

We give a result on the asymptotic behavior of the Hurwitz-Lerch multiple zeta functions near non-positive integer points by using the Apostol-Bernoulli polynomials. From this resu…

math.NT2021

On the linear relations among parametrized multiple series

Minoru Hirose, Hideki Murahara, Tomokazu Onozuka

Parametrized multiple series are generalizations of the multiple zeta values introduced by Igarashi. In this work, we completely determine all the linear relations among these para…

math.NT2021

Ohno relation for regularized multiple zeta values

Minoru Hirose, Hideki Murahara, Shingo Saito

The Ohno relation for multiple zeta values can be formulated as saying that a certain operator, defined for indices, is invariant under taking duals. In this paper, we generalize t…

math.NT2021

Ohno-type relation for interpolated multiple zeta values

Minoru Hirose, Hideki Murahara, Masataka Ono

We prove the Ohno-type relation for the interpolated multiple zeta values, which was introduced first by Yamamoto. Same type results for finite multiple zeta values are also given.…

math.NT2021

A note on Ohno sums for multiple zeta values

Hideki Murahara

The Ohno relation is a well-known relation among multiple zeta values. Hirose, Onozuka, Sato, and the author investigated the sum related to the Ohno relation and presented two typ…

math.NT2020

Connectors of the Ohno relation for parametrized multiple zeta series

Hideki Murahara, Tomokazu Onozuka

The Ohno relation is a well known relation in the theory of multiple zeta values. Recently, Seki and Yamamoto introduced a connector method and gave its succinct proof. On the othe…

math.NT2020

Generating functions for sums of polynomial multiple zeta values

Minoru Hirose, Hideki Murahara, Shingo Saito

The sum formulas for multiple zeta(-star) values and symmetric multiple zeta(-star) values bear a striking resemblance. We explain the resemblance in a rather straightforward manne…

math.NT2020

Algebraic aspects of rooted tree maps

Hideki Murahara, Tatsushi Tanaka

Based on the Connes--Kreimer Hopf algebra of rooted trees, the rooted tree maps are defined as linear maps on noncommutative polynomial algebra in two indeterminates. It is known t…

math.NT2020

On a basis for Euler-Zagier double zeta functions with non-positive components

Hideki Murahara, Takashi Nakamura

For a non-negative integer , let , where the right-hand side is the vector space spanned by the Euler-Zagier double z…

math.NT2020

On a generalization of the cyclic sum formula for finite multiple zeta and zeta-star values

Hideki Murahara

The cyclic sum formulas for multiple zeta and zeta-star values were respectively proved by Hoffman and Ohno, and Ohno and Wakabayashi. Kawasaki and Oyama obtained an analogous form…

math.NT2020

Cyclic relation for multiple zeta functions

Hideki Murahara, Tomokazu Onozuka

The cyclic relation obtained in a study by Hirose, Murakami, and the first-named author, is a wide class of relations, which includes the well-known cyclic sum formula for multiple…

math.NT2020★ 6 cited

On variants of symmetric multiple zeta-star values and the cyclic sum formula

Minoru Hirose, Hideki Murahara, Masataka Ono

The -adic symmetric multiple zeta values were defined Jarossay, which have been studied as a real analogue of -adic finite multiple zeta values. In this paper, w…

math.NT2020

On the -points of symmetric sum of multiple zeta function

Hideki Murahara, Tomokazu Onozuka

In this paper, we present some results on the -points of the symmetric sum of the Euler-Zagier multiple zeta function. Our first three results are for the -points free region…