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Generalizing supertropical algebras, we present a "layered" structure, "sorted" by a semiring which permits varying ghost layers, and indicate how it is more amenable than the "standard" supertropical construction in factorizations of…

交换代数 · 数学 2011-08-16 Zur Izhakian , Manfred Knebusch , Louis Rowen

The category $\operatorname{STROP}$ of commutative semirings, whose morphisms are transmissions, is a full and reflective subcategory of the category $\operatorname{STROP}_m$ of supertropical monoids. Equivalence relations on supertropical…

交换代数 · 数学 2019-05-07 Zur Izhakian , Manfred Knebusch

We study matrix semigroups in which ring commutators have real spectra. We prove that irreducible semigroups with this property are simultaneously similar to semigroups of real-entried matrices. We also obtain a structure theorem for…

表示论 · 数学 2016-04-28 Mitja Mastnak , Heydar Radjavi

While every group is isomorphic to a transitive group of permutations, the analogous property fails for inverse semigroups: not all inverse semigroups are isomorphic to transitive inverse semigroups of one-to-one partial transformations of…

群论 · 数学 2014-07-09 Boris M. Schein

We investigate different notions of linear independence and of matrix rank that are relevant for max-plus or tropical semirings. The factor rank and tropical rank have already received attention, we compare them with the ranks defined in…

交换代数 · 数学 2009-12-13 Marianne Akian , Stephane Gaubert , Alexander Guterman

In this paper, we find an upper bound for the CP-rank of a matrix over a tropical semiring, according to the vertex clique cover of the graph prescribed by the pattern of the matrix. We study the graphs that beget the patterns of matrices…

环与代数 · 数学 2018-03-16 David Dolžan , Polona Oblak

We give an account on what is known on the subject of permutation matchings, which are bijections of a finite regular semigroup that map each element to one of its inverses. This includes partial solutions to some open questions, including…

组合数学 · 数学 2023-09-26 Peter M. Higgins

We define a formal framework for the study of algebras of type Max-plus, Min-Plus, tropical algebras, and more generally algebras over a commutative idempotent semi-field. This work is motivated by the increasingly diversified use of these…

交换代数 · 数学 2008-07-22 Dominique Castella

In 2010, Izhakian & Margolis proved that the bicyclic monoid admits a representation as a semigroup of upper triangular tropical matrices. We extend this result by classifying all one-relation monoids which admit such representations. We…

环与代数 · 数学 2022-09-27 Carl-Fredrik Nyberg-Brodda

The only invertible matrices in tropical algebra are diagonal matrices, permutation matrices and their products. However, the pseudo-inverse $A^\nabla$, defined as $\frac{adj(A)}{det(A)}$, with $det(A)$ being the tropical permanent (also…

交换代数 · 数学 2014-12-23 Adi Niv

We provide a complete classification of matrix semirings $\mathbf{M}_n(S)$ over two-element additively idempotent semirings $S$ with respect to the finite basis property.Our main theorem shows that for every integer $n \geq 2$,the semiring…

环与代数 · 数学 2026-02-10 Jun Jiao , Miaomiao Ren

The growth of tropical geometry has generated significant interest in the tropical semiring in the past decade. However, there are other semirings in tropical algebra that provide more information, such as the symmetrized (max, +),…

交换代数 · 数学 2018-10-09 Sara Kalisnik Verovsek , Davorin Lesnik

We study the multiplication operation of square matrices over lattices. If the underlying lattice is distributive, then matrices form a semigroup; we investigate idempotent and nilpotent elements and the maximal subgroups of this matrix…

环与代数 · 数学 2020-01-15 Kamilla Kátai-Urbán , Tamás Waldhauser

We study the class of rings $R$ with the property that for $x\in R$ at least one of the elements $x$ and $1+x$ are tripotent.

环与代数 · 数学 2017-04-06 Simion Breaz , Andrada Cî mpean

The m-weak group inverse was recently studied in the literature. The purpose of this paper is to investigate new properties of this generalized inverse for ring elements. We introduce the m-weak group decomposition for a ring element and…

环与代数 · 数学 2024-06-25 Huanyin Chen

In a unitary ring with involution, we prove that each element has at most one weak group inverse if and only if each idempotent element has a unique weak group inverse. Furthermore, we define the $m$-weak group inverse and show some…

环与代数 · 数学 2020-08-03 Yukun Zhou , Jianlong Chen , Mengmeng Zhou

In this note we study the relationship between ideals and congruences of the tropical polynomial and Laurent polynomial semirings. We show that the variety of a non-zero prime ideal of the tropical (Laurent) polynomial semiring consists of…

代数几何 · 数学 2025-12-22 Dániel Joó , Kalina Mincheva

Our main result states that a finite semiring of order >2 with zero which is not a ring is congruence-simple if and only if it is isomorphic to a `dense' subsemiring of the endomorphism semiring of a finite idempotent commutative monoid. We…

环与代数 · 数学 2007-05-23 Jens Zumbrägel

This is a survey paper on the connection of enriched category theory over a quantale and tropical mathematics. Quantales or complete idempotent semirings, as well as matrices with coefficients in them, are fundamental objects in both…

范畴论 · 数学 2020-05-19 Soichiro Fujii

We investigate multiplicative groups consisting entirely of singular alternating sign matrices (ASMs), and present several constructions of such groups. It is shown that every finite group is isomorphic to a group of singular ASMs, with a…

环与代数 · 数学 2024-05-24 Cian O'Brien , Rachel Quinlan