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In this paper we extend notions of the core inverse, core EP inverse, DMP inverse, and CMP inverse over the quaternion skew-field ${\mathbb{H}}$ and get their determinantal representations within the framework of the theory of column-row…

Rings and Algebras · Mathematics 2019-03-26 Ivan I. Kyrchei

Weighted singular value decomposition (WSVD) and a representation of the weighted Moore-Penrose inverse of a quaternion matrix by WSVD have been derived. Using this representation, limit and determinantal representations of the weighted…

Rings and Algebras · Mathematics 2016-04-04 Ivan Kyrchei

In this paper, we investigate the weighted core-EP inverse introduced by Ferreyra, Levis and Thome. Several computational representations of the weighted core-EP inverse are obtained in terms of singular-value decomposition, full-rank…

Rings and Algebras · Mathematics 2019-05-22 Yuefeng Gao , Jianlong Chen , Pedro Patricio

The main objective of this paper is to introduce unique representations and characterizations for the weighted core inverse of matrices. We also investigate various properties of these inverses and their relationships with other generalized…

Numerical Analysis · Mathematics 2023-12-15 Bibekananda Sitha , Ratikanta Behera , Jajati Keshari Sahoo , R. N. Mohapatra , Predrag Stanimirovic

In this paper, we introduce the notation of $E$-weighted core-EP and $F$-weighted dual core-EP inverse of matrices. We then obtain a few explicit expressions for the weighted core-EP inverse of matrices through other generalized inverses.…

Numerical Analysis · Mathematics 2021-09-21 Ratikanta Behera , Gayatri Maharana , Jajati Keshari Sahoo

In this paper, various properties of core-EP matrices are investigated. We introduce the MPDMP matrix associated with $A$ and by means of it, some properties and equivalent conditions of core-EP matrices can be obtained. Also, properties of…

Numerical Analysis · Mathematics 2024-07-09 Ehsan Kheirandish , Abbas Salemi , Néstor Thome

Specific definitions of the core and core-EP inverses of complex tensors are introduced. Some characterizations, representations and properties of the core and core-EP inverses are investigated. The results are verified using specific…

In this paper, we introduce new representation and characterization of the weighted core inverse of matrices. Several properties of these inverses and their interconnections with other generalized inverses are also explored. Through…

Numerical Analysis · Mathematics 2023-09-27 Ratikanta Behera , Jajati Keshari Sahoo , Ram N. Mohapatra

Weighted singular value decomposition (WSVD) of a quaternion matrix and with its help determinantal representations of the quaternion weighted Moore-Penrose inverse have been derived recently by the author. In this paper, using these…

Rings and Algebras · Mathematics 2017-08-07 Ivan Kyrchei

By using determinantal representations of the W-weighted Drazin inverse previously obtained by the author within the framework of the theory of the column-row determinants, we get explicit formulas for determinantal representations of the…

Rings and Algebras · Mathematics 2016-02-24 Ivan Kyrchei

In this paper we introduce the generalized inverse of complex square matrix with respect to other matrix having same size. Some of its representations, properties and characterizations are obtained. Also some new representation matrices of…

Rings and Algebras · Mathematics 2025-01-22 Abdessalam Kara , Néstor Thome , Dragan S. Djordjevi'c

Recently, Malik and Ferreyra introduced the $m$-weak core inverse for complex square matrices which generalizes the core-EP inverse, the WC inverse, and therefore the core inverse. The main aim of this paper is to extend the concept of…

Rings and Algebras · Mathematics 2024-03-22 D. E. Ferreyra , D. Mosic

Within the framework of the theory of the column and row determinants, we obtain new determinantal representations of the W-weighted Drazin inverse over the quaternion skew field. We give determinantal representations of the W-weighted…

Rings and Algebras · Mathematics 2016-01-15 Ivan Kyrchei

The core-EP and BT inverses for rectangular matrices were studied recently in the literature. The main aim of this paper is to unify both concepts by means of a new kind of generalized inverse called $W$-weighted $q$-BT inverse. We analyze…

Rings and Algebras · Mathematics 2024-03-22 D. E. Ferreyra , N. Thome , C. Torigino

This paper introduces notions of the Drazin and the core-EP inverses on tensors via M-product. We propose a few properties of the Drazin and core-EP inverses of tensors, as well as effective tensor-based algorithms for calculating these…

Numerical Analysis · Mathematics 2024-08-27 Jajati Keshari Sahoo , Saroja Kumar Panda , Ratikanta Behera , Predrag S. Stanimirović

We develop quaternion--native iterative methods for computing the Moore--Penrose (MP) pseudoinverse of quaternion matrices and analyze their convergence. Our starting point is a damped Newton--Schulz (NS) iteration tailored to…

Numerical Analysis · Mathematics 2025-10-10 Valentin Leplat , Salman Ahmadi-Asl , JunJun Pan , Ning Zheng

In this paper, we consider the problem of representing a multivariate polynomial as the determinant of a definite (monic) symmetric/Hermitian linear matrix polynomial (LMP). Such a polynomial is known as determinantal polynomial.…

Optimization and Control · Mathematics 2018-11-28 Papri Dey

Within the framework of the theory of quaternion column-row determinants and using determinantal representations of the Moore-Penrose inverse previously obtained by the author, we get explicit determinantal representation formulas of…

Rings and Algebras · Mathematics 2018-09-25 Ivan Kyrchei

Within the framework of the theory of the column and row determinants, we obtain determinantal representations of the Drazin inverse for Hermitian matrix over the quaternion skew field. Using the obtained determinantal representations of…

Rings and Algebras · Mathematics 2016-01-15 Ivan Kyrchei

For the unitary ensembles of $N\times N$ Hermitian matrices associated with a weight function $w$ there is a kernel, expressible in terms of the polynomials orthogonal with respect to the weight function, which plays an important role. For…

solv-int · Physics 2015-06-26 Harold Widom
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