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We introduce the Leavitt path algebras of ultragraphs and we characterize their ideal structures. We then use this notion to introduce and study the algebraic analogous of Exel-Laca algebras.

Rings and Algebras · Mathematics 2021-06-24 M. Imanfar , A. Pourabbas , H. Larki

We determine the structure of Leavitt path algebras of polynomial growth and discuss their automorphisms and involutions.

Rings and Algebras · Mathematics 2014-01-10 Adel Alahmedi , Hamed Alsulami , Surender Jain , Efim I. Zelmanov

When the theory of Leavitt path algebras was already quite advanced, it was discovered that some of the more difficult questions were susceptible to a new approach using topological groupoids. The main result that makes this possible is…

Rings and Algebras · Mathematics 2019-05-16 Simon W. Rigby

This introduction to graphs and graph algebras provides the optimal bound for the number of all paths of length $k$ in a graph with $N\geq k$ edges and no loops. Our proof relies on a construction of a number of terminating algorithms that…

Rings and Algebras · Mathematics 2019-12-12 Piotr M. Hajac , Mariusz Tobolski

The purpose of this paper is to provide a common framework for studying various generalizations of Leavitt algebras and Leavitt path algebras. This paper consists of two parts. In part I we define Cohn-Leavitt path algebras of a new class…

Rings and Algebras · Mathematics 2020-01-01 Mohan. R , B. N. Suhas

We introduce an object that has obvious similarity to the classical one - the algebra of supersymmetric polynomials. Despite the similarity, the known structure theorems on supersymmetric polynomials do not help in the study of the new…

Commutative Algebra · Mathematics 2024-07-29 Grigory Chelnokov , Maxim Turevskii

In addition to extending some facts from field coefficients to commutative ring coefficients for Leavitt path algebras with new shorter proofs, we also prove some results that are new even for field coefficients. In particular, we show that…

Rings and Algebras · Mathematics 2023-09-26 Ayten Koç , Murad Özaydın

Article explicitly expresses Subgraph Isomorphism by a polynomial size asymmetric linear system.

Discrete Mathematics · Computer Science 2008-11-10 Sergey Gubin

We give a new characterization of the peak subalgebra of the algebra of quasisymmetric functions and use this to construct a new basis for this subalgebra. As an application of these results we obtain a combinatorial formula for the…

Combinatorics · Mathematics 2014-07-01 Francesco Brenti , Fabrizio Caselli

The main aim of the paper is to give a socle theory for Leavitt path algebras of arbitrary graphs. We use both the desingularization process and combinatorial methods to study Morita invariant properties concerning the socle and to…

For any row-finite graph $E$ and any field $K$ we construct the {\its Leavitt path algebra} $L(E)$ having coefficients in $K$. When $K$ is the field of complex numbers, then $L(E)$ is the algebraic analog of the Cuntz Krieger algebra…

Rings and Algebras · Mathematics 2007-05-23 G. Abrams , G. Aranda Pino

We investigate polynomial endomorphisms of graph $C^*$-algebras and Leavitt path algebras. To this end, we define and analyze the coding graph corresponding to each such an endomorphism. We find an if and only if condition for the…

Operator Algebras · Mathematics 2018-10-15 Rune Johansen , Adam P. W. Sørensen , Wojciech Szymański

The aim of this work is the description of the isomorphism classes of all Leavitt path algebras coming from graphs satisfying Condition (Sing) with up to three vertices. In particular, this classification recovers the one achieved by Abrams…

Leavitt path algebras are shown to be algebras of right quotients of their corresponding path algebras. Using this fact we obtain maximal algebras of right quotients from those (Leavitt) path algebras whose associated graph satisfies that…

Rings and Algebras · Mathematics 2007-09-20 Mercedes Siles Molina

A class of associative (super) algebras is presented, which naturally generalize both the symmetric algebra $Sym(V)$ and the wedge algebra $\wedge (V)$, where $V$ is a vector-space. These algebras are in a bijection with those subsets of…

Combinatorics · Mathematics 2007-05-23 A. Regev

In this paper, we introduce the solvabilizer and the solvable graph for a Lie superalgebra and establish their basic properties. Then we define a category which links Lie superalgebras to their solvable substructures. Afterwards, we prove…

Rings and Algebras · Mathematics 2026-02-27 Baojin Zhang , Liming Tang

We complete the derived equivalence classification of all symmetric algebras of polynomial growth, by solving the subtle problem of distinguishing the standard and nonstandard nondomestic symmetric algebras of polynomial growth up to…

Representation Theory · Mathematics 2010-09-08 Thorsten Holm , Andrzej Skowronski

Any finite dimensional semisimple algebra A over a field K is isomorphic to a direct sum of finite dimensional full matrix rings over suitable division rings. In this paper we will consider the special case where all division rings are…

Rings and Algebras · Mathematics 2020-12-29 Ayten Koç , Songül Esin , Ismail Güloğlu , Müge Kanuni , Ayten Koc , Songul Esin , Ismail Guloglu , Muge Kanuni

Given a graph E we define E-algebraic branching systems, show their existence and how they induce representations of the associated Leavitt path algebra. We also give sufficient conditions to guarantee faithfulness of the representations…

Rings and Algebras · Mathematics 2013-10-09 D. Gonçalves , D. Royer

In this paper we show that Leavitt path algebras of weighted graphs and Leavitt path algebras of separated graphs are intimately related. We prove that any Leavitt path algebra $L(E,\omega)$ of a row-finite vertex weighted graph…

Rings and Algebras · Mathematics 2022-05-12 Pere Ara
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