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In this paper, for every one-dimensional formal group $F$ we formulate and study a notion of vertex $F$-algebra and a notion of $\phi$-coordinated module for a vertex $F$-algebra where $\phi$ is what we call an associate of $F$. In the case…

Quantum Algebra · Mathematics 2010-06-22 Haisheng Li

We develop a theory of $\phi$-coordinated (quasi) modules for a nonlocal vertex algebra and we establish a conceptual construction of nonlocal vertex algebras and their $\phi$-coordinated (quasi) modules, where $\phi$ is what we call an…

Quantum Algebra · Mathematics 2010-05-28 Haisheng Li

This paper is about $\phi$-coordinated modules for weak quantum vertex algebras. Among the main results, several canonical connections among $\phi$-coordinated modules for different $\phi$ are established. For vertex operator algebras, a…

Quantum Algebra · Mathematics 2016-08-15 Haisheng Li

To give a unified treatment on the association of Lie algebras and vertex algebras, we study $(G,\chi_\phi)$-equivariant $\phi$-coordinated quasi modules for vertex algebras, where $G$ is a group with $\chi_\phi$ a linear character of $G$…

Quantum Algebra · Mathematics 2021-03-19 Fulin Chen , Xiaoling Liao , Shaobin Tan , Qing Wang

We study $\N$-graded $\phi$-coordinated modules for a general quantum vertex algebra $V$ of a certain type in terms of an associative algebra $\widetilde{A}(V)$ introduced by Y.-Z. Huang. Among the main results, we establish a bijection…

Quantum Algebra · Mathematics 2016-07-05 Haisheng Li

In this paper, we study $(G,\chi_{\phi})$-equivariant $\phi$-coordinated quasi modules for nonlocal vertex algebras. Among the main results, we establish several conceptual results, including a generalized commutator formula and a general…

Quantum Algebra · Mathematics 2020-12-07 Naihuan Jing , Fei Kong , Haisheng Li , Shaobin Tan

This is a paper in a series to study quantum vertex algebras and their relations with various quantum algebras. In this paper, we introduce a notion of T-type quantum vertex algebra and a notion of $G$-covariant $\phi$-coordinated quasi…

Quantum Algebra · Mathematics 2015-06-12 Haisheng Li

We apply the theory of $\phi$-coordinated modules, developed by H.-S. Li, to the Etingof--Kazhdan quantum affine vertex algebra associated with the trigonometric $R$-matrix of type $A$. We prove, for a certain associate $\phi$ of the…

Quantum Algebra · Mathematics 2021-06-15 Slaven Kožić

We associate quantum vertex algebras and their $\phi$-coordinated quasi modules to certain deformed Heisenberg algebras.

Quantum Algebra · Mathematics 2011-06-17 Haisheng Li

We consider the Etingof-Kazhdan quantum vertex algebra $\mathcal{V}^c(\mathfrak{gl}_N)$ associated with the trigonometric $R$-matrix of type $A$. By combining Li's theory of $\phi$-coordinated modules and the ideas from our previous paper,…

Quantum Algebra · Mathematics 2026-01-05 Lucia Bagnoli , Slaven Kožić

In this paper, for every $\epsilon\in \mathbb{Z}$, we introduce an extension of the 2-toroidal Lie algebra by certain derivations. Based on the $\phi_\epsilon$-coordinated modules theory for vertex algebras, we give an explicit realization…

Quantum Algebra · Mathematics 2022-03-23 Fulin Chen , Huansheng Li , Nina Yu

In this paper, we associate quantum vertex algebras to a certain family of associative algebras $\widetilde{\A}(g)$ which are essentially Ding-Iohara algebras. To do this, we introduce another closely related family of associative algebras…

Quantum Algebra · Mathematics 2017-06-13 Haisheng Li , Shaobin Tan , Qing Wang

We first investigate the algebraic structure of vertex algebroids $B$ when $B$ are simple Leibniz algebras. Next, we use these vertex algebroids $B$ to construct indecomposable non-simple $C_2$-cofinite $\mathbb{N}$-graded vertex algebras…

Quantum Algebra · Mathematics 2020-11-25 Thuy Bui , Gaywalee Yamskulna

We introduce the $h$-adic quantum vertex algebras associated with the trigonometric $R$-matrices in types $B$, $C$ and $D$, thus generalizing the well-known Etingof-Kazhdan construction in type $A$. We show that restricted modules for…

Quantum Algebra · Mathematics 2021-11-12 Slaven Kožić

We study the family of vertex algebras associated with vertex algebroids, constructed by Gorbounov, Malikov, and Schechtman. As the main result, we classify all the (graded) simple modules for such vertex algebras and we show that the…

Quantum Algebra · Mathematics 2007-05-23 Haisheng Li , Gaywalee Yamskulna

This paper is about establishing a natural connection of quantum affine algebras with quantum vertex algebras. Among the main results, we establish $\hbar$-adic versions of the smash product construction of quantum vertex algebras and their…

Quantum Algebra · Mathematics 2026-04-07 Naihuan Jing , Fei Kong , Haisheng Li , Shaobin Tan

To a pair (X,f), X compact ANR and f a continuous angle valued map defined on X, a fixed field and a nonnegative integer one assigns a finite configuration of complex numbers with multiplicities located in the punctured complex plane and a…

Algebraic Topology · Mathematics 2015-12-29 Dan Burghelea

We give a new construction of functors from the category of modules for the associative algebras $A_n(V)$ and $A_g(V)$ associated with a vertex operator algebra $V$, defined by Dong, Li and Mason, to the category of admissible $V$-modules…

Quantum Algebra · Mathematics 2015-08-31 Jinwei Yang

Consider a complex projective space with its Fubini-Study metric. We study certain one parameter deformations of this metric on the complement of an arrangement (=a finite union of hyperplanes) whose Levi-Civita connection is of Dunkl…

Algebraic Geometry · Mathematics 2007-05-23 Wim Couwenberg , Gert Heckman , Eduard Looijenga

This paper is a continuation to understand Heisenberg vertex algebras in terms of moduli spaces of their conformal structures. We study the moduli space of the conformal structures on a Heisenberg vertex algebra that have the standard fixed…

Quantum Algebra · Mathematics 2019-01-01 Yanjun Chu , Zongzhu Lin
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