An automatic integration procedure for infinite range integrals involving oscillatory kernels. - Takemitsu Hasegawa; Avram Sidi (Numer. Algorithms, 1996)

Statistical filter for multiple test noise on fMRI. - Takahiro Takada; Takemitsu Hasegawa; Hisakazu Ogura; Masato Tanaka; Hiroki Yamada; Hiroyuki Komuro; Yasushi Ishii (Syst. Comput. Jpn., 2001)

An extended doubly-adaptive quadrature method based on the combination of the Ninomiya and the FLR schemes. - Takemitsu Hasegawa; Susumu Hibino; Yohsuke Hosoda; Ichizo Ninomiya (Numer. Algorithms, 2007)

A system on the Web for octuple-precision computation. - Takemitsu Hasegawa; Yohsuke Hosoda; Yuuichi Itaya; Ichizo Ninomiya (SMC, 2009)

A web system for the 3D display of bivariate mathematical functions. - Yohsuke Hosoda; Takemitsu Hasegawa (SMC, 2009)

Numerical evaluation of Goursat's infinite integral. - Yasuyo Hatano; Ichizo Ninomiya; Hiroshi Sugiura; Takemitsu Hasegawa (Numer. Algorithms, 2009)

An approximation method for high-order fractional derivatives of algebraically singular functions. - Takemitsu Hasegawa; Hiroshi Sugiura (Comput. Math. Appl., 2011)

Algorithms for approximating finite Hilbert transform with end-point singularities and its derivatives. - Takemitsu Hasegawa; Hiroshi Sugiura (J. Comput. Appl. Math., 2011)

A polynomial interpolation process at quasi-Chebyshev nodes with the FFT. - Hiroshi Sugiura; Takemitsu Hasegawa (Math. Comput., 2011)

A User-Friendly Computation System on the Web with Octuple-precision. - Yohsuke Hosoda; Takemitsu Hasegawa (SNPD, 2012)

Error estimate for a corrected Clenshaw-Curtis quadrature rule. - Takemitsu Hasegawa; Hiroshi Sugiura (Numerische Mathematik, 2015)

A user-friendly method for computing indefinite integrals of oscillatory functions. - Takemitsu Hasegawa; Hiroshi Sugiura (J. Comput. Appl. Math., 2017)

Uniform approximation to Cauchy principal value integrals with logarithmic singularity. - Takemitsu Hasegawa; Hiroshi Sugiura (J. Comput. Appl. Math., 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 finite Hilbert transform of oscillatory functions and its algorithm. - Takemitsu Hasegawa; Hiroshi Sugiura (J. Comput. Appl. Math., 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)

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)

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)

A truncated Clenshaw-Curtis formula approximates integrals over a semi-infinite interval. - Hiroshi Sugiura; Takemitsu Hasegawa (Numer. Algorithms, 2021)

Extensions of Clenshaw-Curtis-type rules to integrals over a semi-infinite interval. - Hiroshi Sugiura; Takemitsu Hasegawa (Numer. Algorithms, 2022)

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, 2023)

Error bounds for Gauss-Jacobi quadrature of analytic functions on an ellipse. - Hiroshi Sugiura; Takemitsu Hasegawa (Math. Comput., 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., 2024)

Error bounds for Gauss-Lobatto quadrature of analytic functions on an ellipse. - Hiroshi Sugiura; Takemitsu Hasegawa (J. Comput. Appl. Math., 2025)