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Two unital operator algebras A, B are called Delta-equivalent if there exists an equivalence functor between the categories A-mod and B-mod which "extends" to a *-functor implementing an equivalence between the categories A-dmod and B-dmod.…

Operator Algebras · Mathematics 2007-09-06 G. K. Eleftherakis

Generators and relations are given for the subalgebra of cocommutative elements in the quantized coordinate rings of the classical groups, where the deformation parameter q is transcendental. This is a ring theoretic formulation of the well…

Quantum Algebra · Mathematics 2007-05-23 M. Domokos , T. H. Lenagan

This paper concerns the notion of a symmetric algebra and its generalization to a quasi-symmetric algebra. We study the structure of these algebras in respect to their hull-kernel regularity and existence of some ideals, especially the…

Functional Analysis · Mathematics 2017-06-29 Olufemi O. Oyadare

There is a Rota-Baxter algebra structure on the field $A=\mathbf{k}((t))$ with $ P$ being the projection map $A=\mathbf{k}[[t]]\oplus t^{-1}\mathbf{k}[t^{-1}]$ onto $ \mathbf{k}[[ t]]$. We study the representation theory and…

Representation Theory · Mathematics 2016-03-21 Zongzhu Lin , Li Qiao

The new approach to the theory of complex representrations of the finite symmetric groups which based on the notions of Coxeter generators., Gelfand-Zetlin algebras, Hecke algebra, Young-Jucys-Murphi generators and which hardly used…

Representation Theory · Mathematics 2007-05-23 A. M. Vershik , A. Yu. Okounkov

We analyse the very-extended Kac-Moody algebras as representations in terms of certain A_d subalgebras and find the generators at low levels. Our results for low levels agree precisely with the bosonic field content of the theories…

High Energy Physics - Theory · Physics 2008-11-26 Axel Kleinschmidt , Igor Schnakenburg , Peter West

We give bounds on the degree of generators for the ideal of relations of the graded algebras of modular forms with coefficients in $\mathbb{Q}$ over congruence subgroups $\Gamma_0(N)$ for $N$ satisfying some congruence conditions and for…

Number Theory · Mathematics 2016-03-07 Nadim Rustom

Given an almost unimodular $G$, so that the Plancherel weight $\varphi_G$ on the group von Neumann algebra $L(G)$ is almost periodic, we show that the basic construction for the inclusion $L(G)^{\varphi_G} \leq L(G)$ is isomorphic to a…

Operator Algebras · Mathematics 2025-09-12 Aldo Garcia Guinto

We introduce the notion of (nondegenerate) strongly-modular fusion algebras. Here strongly-modular means that the fusion algebra is induced via Verlinde's formula by a representation of the modular group whose kernel contains a congruence…

High Energy Physics - Theory · Physics 2009-09-25 Wolfgang Eholzer

Based on the Kazama-Suzuki type coset construction and its inverse coset between the subregular $\mathcal{W}$-algebras for $\mathfrak{sl}_n$ and the principal $\mathcal{W}$-superalgebras for $\mathfrak{sl}_{1|n}$, we prove weight-wise…

Representation Theory · Mathematics 2022-06-22 Thomas Creutzig , Naoki Genra , Shigenori Nakatsuka , Ryo Sato

The aim of this paper is to study the dominant dimension of two important classes of finite dimensional algebras, namely, hereditary algebras and tree algebras. We derive an explicit formula for the dominant dimension of each class.

Representation Theory · Mathematics 2012-09-05 Muhammad Abrar

We extend the notion of Rokhlin dimension from topological dynamical systems to $C^*$-correspondences. We show that in the presence of finite Rokhlin dimension and a mild quasidiagonal-like condition (which, for example, is automatic for…

Operator Algebras · Mathematics 2016-08-12 N. P. Brown , A. Tikuisis , A. M. Zelenberg

We study isometric representations of product systems of correspondences over the semigroup $\mathbb{N}^k$ which are minimal dilations of finite dimensional, fully coisometric representations. We show the existence of a unique minimal…

Operator Algebras · Mathematics 2010-11-16 Adam Hanley Fuller

For square-integrable genuine Iwahori-spherical representations of central covers, we verify the Hiraga--Ichino--Ikeda formula for their formal degrees. We also compute the Whittaker dimensions of these representations, when their…

Representation Theory · Mathematics 2023-05-16 Ping Dong , Fan Gao , Runze Wang

Based on an argument for the noncommutativity of momenta in noncommutative directions, we arrive at a generalization of the ${\cal N}=1$ super $E^2$ algebra associated to the deformation of translations in a noncommutative Euclidean plane.…

High Energy Physics - Theory · Physics 2014-11-18 Reza Abbaspur

We construct an explicit representation of the Sugawara generators for arbitrary level in terms of the homogeneous Heisenberg subalgebra, which generalizes the well-known expression at level 1. This is achieved by employing a physical…

High Energy Physics - Theory · Physics 2008-11-26 R. W. Gebert , K. Koepsell , H. Nicolai

(Partial) Gorenstein silting modules are introduced and investigated. It is shown that for finite dimensional algebras of finite CM-type, partial Gorenstein silting modules are in bijection with {\tau}_G-rigid modules; Gorenstein silting…

Representation Theory · Mathematics 2022-09-02 Nan Gao , Jing Ma , Chi-Heng Zhang

We show that two C*-algebraic noncommutative tori are strongly Morita equivalent if and only if they have isomorphic ordered K_0-groups and centers, extending N. C. Phillips's result in the case that the algebras are simple. This is also…

Operator Algebras · Mathematics 2007-05-23 George A. Elliott , Hanfeng Li

We introduce "continuous deformed preprojective algebras" attached to infinite affine Dynkin quivers of type A_{\infty}, A_{+\infty}, D_{\infty}. We define a one-parameter family of deformations of the wreath product of a symmetric group…

Representation Theory · Mathematics 2007-05-23 Silvia Montarani

Using the concept of mixable shuffles, we formulate explicitly the quantum quasi-shuffle product, as well as the subalgebra generated by primitive elements of the quantum quasi-shuffle bialgebra. We construct a braided coalgebra structure…

Quantum Algebra · Mathematics 2016-12-22 Run-Qiang Jian