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Related papers: Graph-Based Models for Kirchberg Algebras

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We calculate the ordered K_0-group of a graph C*-algebra and mention applications of this result to AF-algebras, states on the K_0-group of a graph algebra, and tracial states of graph algebras.

Operator Algebras · Mathematics 2007-05-23 Mark Tomforde

This paper investigates some combinatorial and algebraic properties of a Witt type formula for graphs.

Combinatorics · Mathematics 2013-03-05 G. A. T. F. da Costa

We develop a random model for relation algebras. We prove some preliminary results and pose questions that lay out a new direction of research.

Combinatorics · Mathematics 2018-02-20 Jeremy F. Alm

We develop random graph models where graphs are generated by connecting not only pairs of vertices by edges but also larger subsets of vertices by copies of small atomic subgraphs of arbitrary topology. This allows the for the generation of…

Statistics Theory · Mathematics 2021-04-21 Anatol E. Wegner , Sofia Olhede

Algebro-geometric methods have proven to be very successful in the study of graphical models in statistics. In this paper we introduce the foundations to carry out a similar study of their quantum counterparts. These quantum graphical…

Algebraic Geometry · Mathematics 2023-08-23 Eliana Duarte , Dmitrii Pavlov , Maximilian Wiesmann

We obtain a presentation by generators and relations for generalized Schur algebras and their quantizations. This extends earlier results obtained in the type A case. The presentation is compatible with Lusztig's modified form of a…

Quantum Algebra · Mathematics 2007-05-23 Stephen Doty

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

It is proved that for a vector space W, any set of parafermion-like vertex operators on W in a certain canonical way generates a generalized vertex algebra in the sense of [DL2] with W as a natural module. This result generalizes a result…

Quantum Algebra · Mathematics 2007-05-23 Yongcun Gao , Haisheng Li

For special universal $C^*$-algebras associated to $k$-semigraphs we present the universal representations of these algebras, prove a Cuntz--Krieger uniqueness theorem, and compute the $K$-theory. These $C^*$-algebras seem to be the most…

Operator Algebras · Mathematics 2013-06-24 Bernhard Burgstaller

We prove that unital graph C*-algebras often admit a convenient decomposition into amalgamated free products. We use this to give a complete characterization of when a unital graph C*-algebra is residually finite-dimensional and when it is…

Operator Algebras · Mathematics 2026-03-05 Guillaume Bellier , Tatiana Shulman

Graph grammars extend the theory of formal languages in order to model distributed parallelism in theoretical computer science. We show here that to certain classes of context-free and context-sensitive graph grammars one can associate a…

Formal Languages and Automata Theory · Computer Science 2015-03-02 Matilde Marcolli , Alexander Port

In an earlier paper, the authors introduced partial translation algebras as a generalisation of group C*-algebras. Here we establish an extension of partial translation algebras, which may be viewed as an excision theorem in this context.…

Operator Algebras · Mathematics 2013-04-29 Jacek Brodzki , Graham A. Niblo , Nick Wright

A generalization of the term "generalized Clifford algebras" (as appears in papers on advances in applied Clifford algebras) is introduced. This algebra is studied by means of structure theory of central simple algebras. A graph theoretical…

Rings and Algebras · Mathematics 2011-12-09 Adam Chapman

We develop a graphical notation to introduce classical Lie algebras. Although this paper deals with well-known results, our pictorial point of view is slightly different to the traditional one. Our graphical notation is fairly elementary…

Representation Theory · Mathematics 2009-09-29 Rafael Diaz , Eddy Pariguan

We show that pseudovarieties of finitely generated algebras, i.e., classes $C$ of finitely generated algebras closed under finite products, homomorphic images, and subalgebras, can be described via a uniform structure $U$ on the free…

Logic · Mathematics 2020-12-09 Mai Gehrke , Michael Pinsker

We introduce and study elementary properties of graph homology of algebras. This new homology theory shares many features of cyclic and Hochschild homology. We also define a graph K-theory together with an analog of Chern character.

K-Theory and Homology · Mathematics 2007-05-23 M. V. Movshev

Using the Evans spectral sequence and its counter-part for real $K$-theory, we compute both the real and complex $K$-theory of several infinite families of $C^*$-algebras based on higher-rank graphs of rank $3$ and $4$. The higher-rank…

Operator Algebras · Mathematics 2025-02-26 Jeffrey L Boersema , Alina Vdovina

We construct large classes of maximal commutative subalgebras in prime Steinberg algebras, generalizing a known result for Leavitt path algebras.

Rings and Algebras · Mathematics 2025-08-07 Anna Cichocka , Zachary Mesyan , Michal Ziembowski

Given a directed graph, there exists a universal operator algebra and universal C*-algebra associated to the directed graph. In this paper we give intrinsic constructions of these objects. We provide an explicit construction for the maximal…

Operator Algebras · Mathematics 2007-05-23 Benton L. Duncan

In this paper, we construct the "2221" subfactor planar algebra by finding it as a subalgebra of the graph planar algebra of its principal graph. In particular, we give a presentation of the "2221" subfactor planar algebra consisting of…

Operator Algebras · Mathematics 2011-02-11 Richard Han