The geometric mean of two matrices from a computational viewpoint

B Iannazzo - Numerical Linear Algebra with Applications, 2016 - Wiley Online Library
The geometric mean of two matrices is considered from a computational viewpoint. Several
numerical algorithms based on different properties and representations of the geometric …

[HTML][HTML] Numerically stable improved Chebyshev–Halley type schemes for matrix sign function

A Cordero, F Soleymani, JR Torregrosa… - Journal of Computational …, 2017 - Elsevier
A general family of iterative methods including a free parameter is derived and proved to be
convergent for computing matrix sign function under some restrictions on the parameter …

A Padé family of iterations for the matrix sign function and related problems

O Gomilko, F Greco, K Ziȩtak - Numerical Linear Algebra with …, 2012 - Wiley Online Library
In this paper we consider the Pad'e family of iterations for computing the matrix sign function
and the Padé family of iterations for computing the matrix p‐sector function. We prove that all …

[HTML][HTML] A fast convergent numerical method for matrix sign function with application in SDEs

AR Soheili, F Toutounian, F Soleymani - Journal of Computational and …, 2015 - Elsevier
In this article, a new matrix iterative method for computing the sign of a matrix is offered.
Convergence along with asymptotical stability of the presented method is studied. An …

Some matrix iterations for computing matrix sign function

F Soleymani, E Tohidi, S Shateyi… - Journal of Applied …, 2014 - Wiley Online Library
Some iterative methods are introduced and demonstrated for finding the matrix sign function.
It is analytically shown that the new schemes are asymptotically stable. Convergence …

A general approach for improving the Padé iterations for the matrix sign function

D Jung, C Chun - Journal of Computational and Applied Mathematics, 2024 - Elsevier
The Padé family of iterations is a well-known set of methods used to compute the matrix sign
function, which includes classical methods such as Newton's method, the Newton–Schultz …

Finding the geometric mean for two Hermitian matrices by an efficient iteration method

Y Song, F Soleymani, A Kumar - Mathematical Methods in the …, 2022 - Wiley Online Library
In this work, an iterative method is developed to find the matrix sign function. It is discussed
in detail that the method is novel in comparison to its competitors from the Padé family of …

An Efficient Iterative Approach for Hermitian Matrices Having a Fourth-Order Convergence Rate to Find the Geometric Mean

T Liu, T Li, MZ Ullah, AK Alzahrani, S Shateyi - Mathematics, 2024 - mdpi.com
The target of this work is to present a multiplication-based iterative method for two Hermitian
positive definite matrices to find the geometric mean. The method is constructed via the …

A globally convergent numerical method with fourth order for computing the matrix sign

S Salehi, T Lotfi - Mathematical Methods in the Applied …, 2023 - Wiley Online Library
The target of this article is to propose a novel numerical scheme that can compete its
corresponding solvers of the same type for computing the sign matrix. To do this, a three …

[HTML][HTML] The dual Padé families of iterations for the matrix pth root and the matrix p-sector function

K Ziȩtak - Journal of Computational and Applied Mathematics, 2014 - Elsevier
In this paper we consider the Padé family of iterations [B. Laszkiewicz, K. Ziȩtak, A Padé
family of iterations for the matrix sector function and the matrix p th root, Numer. Linear …