Takemitsu Hasegawa

25 papers B 2C 1Journal 22
YearRankTypeTitle / Venue / Authors
2026 J jnl
On two Gauss-Radau quadrature formulae and their weighted averaged-rule: Is Gauss-Legendre always better than Radau?
Numer. Algorithms
Hiroshi Sugiura, Takemitsu Hasegawa
2025 J jnl
Error bounds for Gauss-Lobatto quadrature of analytic functions on an ellipse.
J. Comput. Appl. Math.
Hiroshi Sugiura, Takemitsu Hasegawa
2024 J jnl
An automatic quadrature method for semi-infinite integrals of exponentially decaying functions and its Matlab code.
J. Comput. Appl. Math.
Takemitsu Hasegawa, Hiroshi Sugiura
2024 J jnl
Error bounds for Gauss-Jacobi quadrature of analytic functions on an ellipse.
Math. Comput.
Hiroshi Sugiura, Takemitsu Hasegawa
2023 J jnl
Two formulae with nodes related to zeros of Bessel functions for semi-infinite integrals: extending Gauss-Jacobi-type rules.
Numer. Algorithms
Hiroshi Sugiura, Takemitsu Hasegawa
2022 J jnl
Extensions of Clenshaw-Curtis-type rules to integrals over a semi-infinite interval.
Numer. Algorithms
Hiroshi Sugiura, Takemitsu Hasegawa
2021 J jnl
A truncated Clenshaw-Curtis formula approximates integrals over a semi-infinite interval.
Numer. Algorithms
Hiroshi Sugiura, Takemitsu Hasegawa
2020 J jnl
Regions of convergence and dynamics of Schröder-like iteration formulae as applied to complex polynomial equations with multiple roots.
Numer. Algorithms
Tomohiro Suzuki, Hiroshi Sugiura, Takemitsu Hasegawa
2019 J jnl
Estimating convergence regions of Schröder's iteration formula: how the Julia set shrinks to the Voronoi boundary.
Numer. Algorithms
Tomohiro Suzuki, Hiroshi Sugiura, Takemitsu Hasegawa
2019 J jnl
On the global convergence of Schröder's iteration formula for real zeros of entire functions.
J. Comput. Appl. Math.
Hiroshi Sugiura, Takemitsu Hasegawa
2019 J jnl
Uniform approximation to finite Hilbert transform of oscillatory functions and its algorithm.
J. Comput. Appl. Math.
Takemitsu Hasegawa, Hiroshi Sugiura
2018 J jnl
On the global convergence of Schröder's iterative formulae for real roots of algebraic equations.
J. Comput. Appl. Math.
Hiroshi Sugiura, Takemitsu Hasegawa
2018 J jnl
Uniform approximation to Cauchy principal value integrals with logarithmic singularity.
J. Comput. Appl. Math.
Takemitsu Hasegawa, Hiroshi Sugiura
2017 J jnl
A user-friendly method for computing indefinite integrals of oscillatory functions.
J. Comput. Appl. Math.
Takemitsu Hasegawa, Hiroshi Sugiura
2015 J jnl
Error estimate for a corrected Clenshaw-Curtis quadrature rule.
Numerische Mathematik
Takemitsu Hasegawa, Hiroshi Sugiura
2012 C conf
A User-Friendly Computation System on the Web with Octuple-precision.
SNPD
Yohsuke Hosoda, Takemitsu Hasegawa
2011 J jnl
A polynomial interpolation process at quasi-Chebyshev nodes with the FFT.
Math. Comput.
Hiroshi Sugiura, Takemitsu Hasegawa
2011 J jnl
Algorithms for approximating finite Hilbert transform with end-point singularities and its derivatives.
J. Comput. Appl. Math.
Takemitsu Hasegawa, Hiroshi Sugiura
2011 J jnl
An approximation method for high-order fractional derivatives of algebraically singular functions.
Comput. Math. Appl.
Takemitsu Hasegawa, Hiroshi Sugiura
2009 B conf
A system on the Web for octuple-precision computation.
SMC
Takemitsu Hasegawa, Yohsuke Hosoda, Yuuichi Itaya, Ichizo Ninomiya
2009 B conf
A web system for the 3D display of bivariate mathematical functions.
SMC
Yohsuke Hosoda, Takemitsu Hasegawa
2009 J jnl
Numerical evaluation of Goursat's infinite integral.
Numer. Algorithms
Yasuyo Hatano, Ichizo Ninomiya, Hiroshi Sugiura, Takemitsu Hasegawa
2007 J jnl
An extended doubly-adaptive quadrature method based on the combination of the Ninomiya and the FLR schemes.
Numer. Algorithms
Takemitsu Hasegawa, Susumu Hibino, Yohsuke Hosoda, Ichizo Ninomiya
2001 J jnl
Statistical filter for multiple test noise on fMRI.
Syst. Comput. Jpn.
Takahiro Takada, Takemitsu Hasegawa, Hisakazu Ogura, Masato Tanaka, Hiroki Yamada, Hiroyuki Komuro, Yasushi Ishii
1996 J jnl
An automatic integration procedure for infinite range integrals involving oscillatory kernels.
Numer. Algorithms
Takemitsu Hasegawa, Avram Sidi