BAREKENG: Jurnal Ilmu Matematika dan Terapan
Vol 20 No 4 (2026): BAREKENG: Journal of Mathematics and Its Application

THE EIGENVECTORS OF REDUCIBLE MATRICES OVER MIN-PLUS ALGEBRA

Siswanto Siswanto (The Department of Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Indonesia)
Riko Fajarudin (The Department of Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Indonesia)



Article Info

Publish Date
24 Aug 2026

Abstract

The eigenvalues and the eigenvectors of a matrix are fundamental concepts in max-plus algebra, especially for square matrices. A communication graph is classified as strongly connected or not, corresponding to irreducible and reducible matrices, respectively. This study aims to develop methods for determining the eigenvectors of reducible matrices over min-plus algebra. Before determining the eigenvectors, we need to determine the eigenvalues. The methodology used is based on the Frobenius Normal Form and graph condensation to decompose the reducible matrix into spectral classes. The eigenvalues ​​can be found using the graphical method. Eigenvectors can be determined for each corresponding eigenvalue. Once the eigenvectors are known, we can find the set of eigenvectors as a map of a matrix. The main results include a characterization of eigenvector bases for each spectral class, criteria for the existence of finite eigenvectors, and an analysis of computational complexity. An isomorphic correspondence exists between min-plus algebra and max-plus algebra. Hence, the eigenvectors of reducible matrices over min-plus algebra are able to be evaluated according to a concept from eigenvectors of reducible matrices over max-plus algebra. This study is limited to min-plus algebra and does not extend to interval min-plus algebra.

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Journal Info

Abbrev

barekeng

Publisher

Subject

Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Energy Engineering Mathematics Mechanical Engineering Physics Transportation

Description

BAREKENG: Jurnal ilmu Matematika dan Terapan is one of the scientific publication media, which publish the article related to the result of research or study in the field of Pure Mathematics and Applied Mathematics. Focus and scope of BAREKENG: Jurnal ilmu Matematika dan Terapan, as follows: - Pure ...