Hiroshi Sugiura

According to our database, Hiroshi Sugiura authored at least 22 papers between 1991 and 2025.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2025

Error bounds for Gauss-Lobatto quadrature of analytic functions on an ellipse.

Hiroshi Sugiura, Takemitsu Hasegawa

J. Comput. Appl. Math., 2025

2024

An automatic quadrature method for semi-infinite integrals of exponentially decaying functions and its Matlab code.

Takemitsu Hasegawa, Hiroshi Sugiura

J. Comput. Appl. Math., February, 2024

Error bounds for Gauss-Jacobi quadrature of analytic functions on an ellipse.

Hiroshi Sugiura, Takemitsu Hasegawa

Math. Comput., 2024

2023

Two formulae with nodes related to zeros of Bessel functions for semi-infinite integrals: extending Gauss-Jacobi-type rules.

Hiroshi Sugiura, Takemitsu Hasegawa

Numer. Algorithms, December, 2023

2022

Extensions of Clenshaw-Curtis-type rules to integrals over a semi-infinite interval.

Hiroshi Sugiura, Takemitsu Hasegawa

Numer. Algorithms, 2022

2021

A truncated Clenshaw-Curtis formula approximates integrals over a semi-infinite interval.

Hiroshi Sugiura, Takemitsu Hasegawa

Numer. Algorithms, 2021

2020

Regions of convergence and dynamics of Schröder-like iteration formulae as applied to complex polynomial equations with multiple roots.

Tomohiro Suzuki, Hiroshi Sugiura, Takemitsu Hasegawa

Numer. Algorithms, 2020

2019

Estimating convergence regions of Schröder's iteration formula: how the Julia set shrinks to the Voronoi boundary.

Tomohiro Suzuki, Hiroshi Sugiura, Takemitsu Hasegawa

Numer. Algorithms, 2019

On the global convergence of Schröder's iteration formula for real zeros of entire functions.

Hiroshi Sugiura, Takemitsu Hasegawa

J. Comput. Appl. Math., 2019

Uniform approximation to finite Hilbert transform of oscillatory functions and its algorithm.

Takemitsu Hasegawa, Hiroshi Sugiura

J. Comput. Appl. Math., 2019

2018

On the global convergence of Schröder's iterative formulae for real roots of algebraic equations.

Hiroshi Sugiura, Takemitsu Hasegawa

J. Comput. Appl. Math., 2018

Uniform approximation to Cauchy principal value integrals with logarithmic singularity.

Takemitsu Hasegawa, Hiroshi Sugiura

J. Comput. Appl. Math., 2018

2017

A user-friendly method for computing indefinite integrals of oscillatory functions.

Takemitsu Hasegawa, Hiroshi Sugiura

J. Comput. Appl. Math., 2017

2015

Error estimate for a corrected Clenshaw-Curtis quadrature rule.

Takemitsu Hasegawa, Hiroshi Sugiura

Numerische Mathematik, 2015

2011

A polynomial interpolation process at quasi-Chebyshev nodes with the FFT.

Hiroshi Sugiura, Takemitsu Hasegawa

Math. Comput., 2011

Algorithms for approximating finite Hilbert transform with end-point singularities and its derivatives.

Takemitsu Hasegawa, Hiroshi Sugiura

J. Comput. Appl. Math., 2011

An approximation method for high-order fractional derivatives of algebraically singular functions.

Takemitsu Hasegawa, Hiroshi Sugiura

Comput. Math. Appl., 2011

2009

Numerical evaluation of Goursat's infinite integral.

Yasuyo Hatano, Ichizo Ninomiya, Hiroshi Sugiura, Takemitsu Hasegawa

Numer. Algorithms, 2009

2000

On Factorization of Analytic Functions and Its Verification.

Tetsuya Sakurai, Hiroshi Sugiura

Reliab. Comput., 2000

1996

A Methodology of Parsing Mathematical Notation for Mathematical Computation.

Yanjie Zhao, Tetsuya Sakurai, Hiroshi Sugiura, Tatsuo Torii

Proceedings of the 1996 International Symposium on Symbolic and Algebraic Computation, 1996

1992

Numerical factorization of a polynomial by rational Hermite interpolation.

Tetsuya Sakurai, Hiroshi Sugiura, Tatsuo Torii

Numer. Algorithms, 1992

1991

An iterative method for algebraic equation by Padé approximation.

Tetsuya Sakurai, Tatsuo Torii, Hiroshi Sugiura

Computing, 1991