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We construct an irreducible representation for the extended affine algebra of type $sl_2$ with coordinates in a quantum torus. We explicitly give formulas using vertex operators similar to those found in the theory of the infinite rank…

High Energy Physics - Theory · Physics 2007-05-23 Stephen Berman , Jacek Szmigielski

Affine structures on a Lie groupoid, including affine $k$-vector fields, $k$-forms and $(p,q)$-tensors are studied. We show that the space of affine structures is a 2-vector space over the space of multiplicative structures. Moreover, the…

Differential Geometry · Mathematics 2021-02-09 Honglei Lang , Zhangju Liu , Yunhe Sheng

These lecture notes cover 13 sessions and are presented as an e-print, intended to evolve over time. Quantum invariants do more than distinguish topological objects; they build bridges between topology, algebra, number theory and quantum…

Quantum Algebra · Mathematics 2025-06-25 Daniel Tubbenhauer

We consider a class of linear ODEs of second order with variable coefficients and construct its Lie algebra of Lie group of equivalence transformations. Further we find invariants and differential invariants of this Lie algebra and by using…

Classical Analysis and ODEs · Mathematics 2010-01-19 Ivan Tsyfra , Tomasz Czyzycki

Quantum N-toroidal algebras are generalizations of quantum affine algebras and quantum toroidal algebras. In this paper we construct a level-one vertex representation of the quantum N-toroidal algebra for type C. In particular, we also…

Quantum Algebra · Mathematics 2022-01-25 Naihuan Jing , Zhucheng Xu , Honglian Zhang

Automorphisms of finite order and real forms of "smooth" affine Kac-Moody algebras are studied, i.e. of 2-dimensional extensions of the algebra of smooth loops in a simple Lie algebra. It is shown that they can be parametrized by certain…

Rings and Algebras · Mathematics 2009-04-01 Ernst Heintze , Christian Groß

We study the central extensions of Lie algebras graded by an irreducible locally finite root system.

Quantum Algebra · Mathematics 2011-12-30 Malihe Yousofzadeh

A new class of integrable mappings and chains is introduced. Corresponding $(1+2)$ integrable systems invariant with respect to such discrete transformations are presented in an explicit form. Their soliton-type solutions are constructed in…

Mathematical Physics · Physics 2007-05-23 A. N. Leznov

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

We describe how dagger-Frobenius monoids give the correct categorical description of certain kinds of finite-dimensional 'quantum algebras'. We develop the concept of an involution monoid, and use it to construct a correspondence between…

Quantum Physics · Physics 2012-09-24 Jamie Vicary

We determine explicit quantum seeds for classes of quantized matrix algebras. Furthermore, we obtain results on centers and block diagonal forms {of these algebras.} In the case where $q$ is {an arbitrary} root of unity, this further…

Quantum Algebra · Mathematics 2012-10-29 Hans Plesner Jakobsen , Chiara Pagani

We define two invariants for (semiprime right Goldie) algebras, one for algebras graded by arbitrary abelian groups, which is unchanged under twists by $2$-cocycles on the grading group, and one for $\mathbb Z$-graded or $\mathbb Z_{\ge…

Rings and Algebras · Mathematics 2017-06-22 K. R. Goodearl , M. T. Yakimov

The theory of algebras with polynomial identities has developed significantly, with special attention devoted to the classification of varieties according to the asymptotic behavior of their codimension sequences. This sequence is a…

Rings and Algebras · Mathematics 2026-01-26 Wesley Quaresma Cota , Luiz Henrique de Souza Matos , Ana Cristina Vieira

A classical result in quantum topology is that oriented 2-dimensional topological quantum field theories (2-TQFTs) are fully classified by commutative Frobenius algebras. In 2006, Turaev and Turner introduced additional structure on…

Quantum Algebra · Mathematics 2025-11-04 Agustina Czenky , Jacob Kesten , Abiel Quinonez , Chelsea Walton

In the present paper we propose a new approach to quantum fields in terms of category algebras and states on categories. We define quantum fields and their states as category algebras and states on causal categories with partial involution…

Mathematical Physics · Physics 2021-12-14 Hayato Saigo

This paper defines the concept of an oriented quantum algebra and develops its application to the construction of quantum link invariants. We show that all known quantum link invariants can be put into this framework.

Geometric Topology · Mathematics 2007-05-23 Louis H. Kauffman , David E. Radford

As an analog of the quantum TKK algebra, a twisted quantum toroidal algebra of type A_1 is introduced. Explicit realization of the new quantum TKK algebra is constructed with the help of twisted quantum vertex operators over a Fock space.

Quantum Algebra · Mathematics 2013-08-12 Naihuan Jing , Rongjia Liu

In this paper we describe graded automorphisms and antiautomorphisms of finite order on matrix algebras endowed with a group gradings by a finite abelian group over an arbitrary algebraically closed field of charcteristic different from 2.

Rings and Algebras · Mathematics 2007-05-23 Yuri Bahturin , Mikhail Zaicev

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

Quantum Algebra · Mathematics 2011-06-17 Haisheng Li

Toda equations associated with twisted loop groups are considered. Such equations are specified by Z-gradations of the corresponding twisted loop Lie algebras. The classification of Toda equations related to twisted loop Lie algebras with…

Mathematical Physics · Physics 2008-11-26 Kh. S. Nirov , A. V. Razumov