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Related papers: Weighted Leavitt path algebras -- an overview

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Finite versions of W-algebras are introduced by considering (symplectic) reductions of finite dimensional simple Lie algebras. In particular a finite analogue of $W^{(2)}_3$ is introduced and studied in detail. Its unitary and non-unitary,…

High Energy Physics - Theory · Physics 2009-10-22 T. Tjin

In this paper, we describe the $K$-module $HH^1(L_K(\Gamma))$ of outer derivations of the Leavitt path algebra $L_K(\Gamma)$ of a row-finite graph $\Gamma$ with coefficients in an associative commutative ring $K$ with unit. We give an…

Algebraic Topology · Mathematics 2019-10-04 Viktor Lopatkin

Weighted projective space arises when we consider the usual geometric definition for projective space and allow for non-trivial weights. On its own, this extra freedom gives rise to more than enough interesting phenomena, but it is the fact…

Algebraic Geometry · Mathematics 2020-11-04 Timothy Hosgood

We introduce a twisted quantum affine algebra associated to each simply laced finite dimensional simple Lie algebra. This new algebra is a Hopf algebra with a Drinfeld-type comultiplication. We obtain this algebra by considering its vertex…

Quantum Algebra · Mathematics 2007-05-23 Naihuan Jing

We present a largely self contained account on the K-theory of a weighted smooth projective curve over an algebraically closed field. In particular, we discuss the weighted version of divisor theory, Euler form, and Riemann-Roch theorem.…

Algebraic Geometry · Mathematics 2017-02-14 Helmut Lenzing

We construct and study a class of algebras associated to generalized layered graphs, i.e. directed graphs with a ranking function on their vertices. Each finite directed acyclic graph admits countably many structures of a generalized…

Combinatorics · Mathematics 2008-06-11 Vladimir Retakh , Robert Lee Wilson

Groebner-Shirshov basis and Gelfand-Kirillov dimension of the Leavitt path algebra are derived.

Rings and Algebras · Mathematics 2012-04-25 A. Alahmadi , H. Alsulami , S. K. Jain , E. Zelmanov

Let $G$ be a group and $\ell$ a commutative unital $\ast$-ring with an element $\lambda \in \ell$ such that $\lambda + \lambda^\ast = 1$. We introduce variants of hermitian bivariant $K$-theory for $\ast$-algebras equipped with a $G$-action…

K-Theory and Homology · Mathematics 2022-02-01 Guido Arnone , Guillermo Cortiñas

Braided m-Lie algebras induced by multiplication are introduced, which generalize Lie algebras, Lie color algebras and quantum Lie algebras. The necessary and sufficient conditions for the braided m-Lie algebras to be strict Jacobi braided…

Rings and Algebras · Mathematics 2009-11-10 Shouchuan Zhang , Yao-Zhong Zhang

We introduce a generalization, called a skew Clifford algebra, of a Clifford algebra, and relate these new algebras to the notion of graded skew Clifford algebra that was defined in 2010. In particular, we examine homogenizations of skew…

Rings and Algebras · Mathematics 2018-08-24 Thomas Cassidy , Michaela Vancliff

In a paper by Michaelis a class of infinite-dimensional Lie bialgebras containing the Virasoro algebra was presented. This type of Lie bialgebras was classified by Ng and Taft. In this paper, all Lie bialgebra structures on the Lie algebras…

Quantum Algebra · Mathematics 2015-06-26 Guang'ai Song , Yucai Su

For a quiver with weighted arrows we define gauge-theory K-theoretic W-algebra generalizing the definition of Shiraishi et al., and Frenkel and Reshetikhin. In particular, we show that the qq-character construction of gauge theory presented…

High Energy Physics - Theory · Physics 2018-05-08 Taro Kimura , Vasily Pestun

We provide a complete answer to the question "When is a quotient of a Leavitt path algebra isomorphic to a Leavitt path algebra?" in terms of the interaction of the kernel of the quotient homomorphism with the cycles of the digraph. A key…

Rings and Algebras · Mathematics 2025-06-10 Ayten Koç , Murad Özaydın

Recently, a new generalized family of infinite-dimensional $ \widetilde{W} $ algebras, each associated with a particular element of a commutative subalgebra of the $ W_{1+\infty} $ algebra, was described. This paper provides a comprehensive…

High Energy Physics - Theory · Physics 2024-10-22 Yaroslav Drachov

Let E be an arbitrary directed graph and let K be any field. It is shown that the Leavitt path algebra A of the graph E over the field K is a Zorn ring if and only if the graph E satisfies the Condition (L), that is, every cycle in E has an…

Rings and Algebras · Mathematics 2013-02-20 Kulumani M Rangaswamy

Inspired by the commutator and anticommutator algebras derived from algebras graded by groups, we introduce noncommutatively graded algebras. We generalize various classical graded results to the noncommutatively graded situation concerning…

Rings and Algebras · Mathematics 2017-11-01 Patrik Nystedt

In this paper we introduce the notion of generalized Lie algebroid and we develop a new formalism necessary to obtain a new solution for the Weistein's Problem. Many applications emphasize the importance and the utility of this new…

Mathematical Physics · Physics 2010-08-11 Constantin M. Arcuş

In [8, 9] M. G. Corrales Garcia, D. M. Barquero, C. Martin Gonzalez, M. Siles Molina, J. F Solanilla Hernandez described the center of a Leavitt path algebra and characterized it in terms of the underlying graph. We offer a different…

Rings and Algebras · Mathematics 2015-11-05 Adel Alahmadi , Hamed Alsulami

In this article, we present a new method to study relative Cuntz-Krieger algebras for higher-rank graphs. We only work with edges rather than paths of arbitrary degrees. We then use this method to simplify the existing results about…

Operator Algebras · Mathematics 2018-04-19 Lisa Orloff Clark , Yosafat E. P. Pangalela

We characterize Leavitt path algebras which are Rickart, Baer, and Baer $*$-rings in terms of the properties of the underlying graph. In order to treat non-unital Leavitt path algebras as well, we generalize these annihilator-related…

Rings and Algebras · Mathematics 2025-05-23 Roozbeh Hazrat , Lia Vas