Main convergence theorems for the improved sor method with orderings. - Emiko Ishiwata; Yoshiaki Muroya (Int. J. Comput. Math., 1998)

New criteria for generalized diagonally dominant matrices. - Emiko Ishiwata; Yoshiaki Muroya; Masunori Harada; Hiroshi Niki (Int. J. Comput. Math., 1998)

On the Attainable Order of Collocation Methods for the Neutral Functional-Differential Equations with Proportional Delays. - Emiko Ishiwata (Computing, 2000)

Basic LUL Factorization and Improved Iterative Method with Orderings. - Yoshiaki Muroya; Emiko Ishiwata (Int. J. Comput. Math., 2003)

Rational approximation method for delay differential equations with proportional delay. - Emiko Ishiwata; Yoshiaki Muroya (Appl. Math. Comput., 2007)

A super-attainable order in collocation methods for differential equations with proportional delay. - Emiko Ishiwata; Yoshiaki Muroya; Hermann Brunner (Appl. Math. Comput., 2008)

On the qd-type discrete hungry Lotka-Volterra system and its application to the matrix eigenvalue algorithm. - Akiko Fukuda; Emiko Ishiwata; Masashi Iwasaki; Yoshimasa Nakamura (JSIAM Lett., 2009)

Development of Quadruple Precision Arithmetic Toolbox QuPAT on Scilab. - Tsubasa Saito; Emiko Ishiwata; Hidehiko Hasegawa (ICCSA (2), 2010)

A variable preconditioned GCR(m) method using the GSOR method for singular and rectangular linear systems. - Daisuke Aoto; Emiko Ishiwata; Kuniyoshi Abe (J. Comput. Appl. Math., 2010)

A strategy of reducing the inner iteration counts for the variable preconditioned GCR({$ vc{m}$}) method. - Kensuke Aihara; Emiko Ishiwata; Kuniyoshi Abe (JSIAM Lett., 2010)

Dynamics of a discretized SIR epidemic model with pulse vaccination and time delay. - Masaki Sekiguchi; Emiko Ishiwata (J. Comput. Appl. Math., 2011)

An alternative implementation of the IDRstab method saving vector updates. - Kensuke Aihara; Kuniyoshi Abe; Emiko Ishiwata (JSIAM Lett., 2011)

Analysis of the GCR method with mixed precision arithmetic using QuPAT. - Tsubasa Saito; Emiko Ishiwata; Hidehiko Hasegawa (J. Comput. Sci., 2012)

Error analysis for matrix eigenvalue algorithm based on the discrete hungry Toda equation. - Akiko Fukuda; Yusaku Yamamoto; Masashi Iwasaki; Emiko Ishiwata; Yoshimasa Nakamura (Numer. Algorithms, 2012)

Effectiveness of Sparse Data Structure for Double-Double and Quad-Double Arithmetics. - Tsubasa Saito; Satoko Kikkawa; Emiko Ishiwata; Hidehiko Hasegawa (PPAM (1), 2013)

Development and acceleration of multiple precision arithmetic toolbox MuPAT for Scilab. - Satoko Kikkawa; Tsubasa Saito; Emiko Ishiwata; Hidehiko Hasegawa (JSIAM Lett., 2013)

A quasi-minimal residual variant of IDRstab using the residual smoothing technique. - Kensuke Aihara; Kuniyoshi Abe; Emiko Ishiwata (Appl. Math. Comput., 2014)

A variant of IDRstab with reliable update strategies for solving sparse linear systems. - Kensuke Aihara; Kuniyoshi Abe; Emiko Ishiwata (J. Comput. Appl. Math., 2014)

Acceleration of Interactive Multiple Precision Arithmetic Toolbox MuPAT Using FMA, SIMD, and OpenMP. - Hotaka Yagi; Emiko Ishiwata; Hidehiko Hasegawa (PARCO, 2019)

Global GPBiCGstab(L) method for solving linear matrix equations. - Itsuki Horiuchi; Kensuke Aihara; Toshio Suzuki; Emiko Ishiwata (Numer. Algorithms, 2023)