Recent Advances in Generalized Inverses and Matrix Theory

A special issue of Mathematics (ISSN 2227-7390). This special issue belongs to the section "C: Mathematical Analysis".

Deadline for manuscript submissions: 30 April 2026 | Viewed by 361

Special Issue Editor


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Guest Editor
Faculty of Sciences and Mathematics, University of Niš, 18000 Niš, Serbia
Interests: operator theory; linear algebra; general algebra; generalized inverses

Special Issue Information

Dear Colleagues,

Generalized inverses are defined in cases when ordinary inverses do not exist, providing solutions to equations, systems of equations, and minimization problems. They play an important role in theoretical and numerical methods of linear algebra and have numerous applications in statistics, econometrics, logistics, electrical network theory, theory of differential and difference equations. Generalized inverses are studied for matrices, quaternion matrices, tensors, dual real matrices, operators on Banach and Hilbert spaces, elements of Banach and C*-algebras, or more generally in rings with or without involution. Partial orders of matrices from generalized inverses also have applications in the theory of linear statistical models.

This Special Issue aims to highlight recent advances in generalized inverses and their applications, including solving matrix and operator equations, systems of equations, minimization problems, and defining partial orders.

We welcome original research articles and reviews. Research areas may include, but are not limited to, the following: generalized inverses with applications; matrix and operator equations; systems of equations and inequalities; matrix and operator decompositions; special types of matrices and operators; minimization problems; quaternion matrix and tensor equations; equations in algebras and rings; partial orders and pre-orders; perturbations; and dual real matrices.

I look forward to receiving your contributions.

Prof. Dr. Dijana Mosić
Guest Editor

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Keywords

  • generalized inverses
  • matrix and operator equations
  • matrix and operator decompositions
  • minimization problems
  • partial orders
  • perturbations

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Published Papers (1 paper)

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Research

18 pages, 255 KB  
Article
New Characterizations of SEP Elements in a Ring with Involution
by Xiaoming Li and Junchao Wei
Mathematics 2025, 13(21), 3565; https://doi.org/10.3390/math13213565 - 6 Nov 2025
Viewed by 240
Abstract
The characterization of SEP elements is a classical problem in generalized inverse theory. Most existing characterizations are formulated in terms of specific algebraic identities. This paper proposes a new approach based on polynomial equations with parameters to characterize SEP elements. This framework provides [...] Read more.
The characterization of SEP elements is a classical problem in generalized inverse theory. Most existing characterizations are formulated in terms of specific algebraic identities. This paper proposes a new approach based on polynomial equations with parameters to characterize SEP elements. This framework provides an alternative characterization and, more importantly, naturally clarifies the structural relationships between SEP elements and three other types of elements: square rootable elements, invertible elements, and involutional projection elements. Full article
(This article belongs to the Special Issue Recent Advances in Generalized Inverses and Matrix Theory)
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