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The main purpose of this article is to explore the possibility of extending the notion of peripheral Poisson boundary of unital completely positive (UCP) maps to contractive completely positive (CCP) maps and to unital and non-unital…

Operator Algebras · Mathematics 2025-07-29 B V Rajarama Bhat , Astrid Swizell Dias

Natural conditions on a Poisson/quantum group G to implement Poisson/quantum gauge transformations on the lattice are investigated. In addition to our previous result that transformations on one lattice link require G to be coboundary, it…

q-alg · Mathematics 2011-04-15 S. Zakrzewski

We introduce C-Algebras (quantum analogues of compact Riemann surfaces), defined by polynomial relations in non-commutative variables and containing a real parameter that, when taken to zero, provides a classical non-linear,…

High Energy Physics - Theory · Physics 2009-06-19 J. Arnlind , M. Bordemann , L. Hofer , J. Hoppe , H. Shimada

Fock and Goncharov described a quantization of cluster $\mathcal{X}$-varieties (also known as cluster Poisson varieties) in [FG09]. Meanwhile, families of deformations of cluster $\mathcal{X}$-varieties were introduced in [BFMNC18]. In this…

Quantum Algebra · Mathematics 2023-08-02 Man-Wai Mandy Cheung , Juan Bosco Frías-Medina , Timothy Magee

We study the problem of classifying all Poisson-Lie structures on the group $G_{\infty}$ of formal diffeomorphisms of the real line $\zR^{1}$ which leave the origin fixed, as well as the extended group of diffeomorphisms $G_{0\infty}\supset…

q-alg · Mathematics 2008-02-03 Ognyan Stoyanov

In this paper we generalize some of these results for loop algebras and groups as well as for the Virasoro algebra to the two-dimensional case. We define and study a class of infinite dimensional complex Lie groups which are central…

High Energy Physics - Theory · Physics 2009-10-22 Pavel Etingof , Igor B. Frenkel

There are two main types of objects in the theory of cluster algebras: the upper cluster algebras ${{\boldsymbol{\mathsf U}}}$ with their Gekhtman-Shapiro-Vainshtein Poisson brackets and their root of unity quantizations…

Representation Theory · Mathematics 2023-02-28 Greg Muller , Bach Nguyen , Kurt Trampel , Milen Yakimov

In previous work, the authors introduced the ozone group of an associative algebra as the subgroup of automorphisms which fix the center pointwise. The authors studied PI skew polynomial algebras, using the ozone group to understand their…

Rings and Algebras · Mathematics 2025-07-10 Kenneth Chan , Jason Gaddis , Robert Won , James J. Zhang

In a recent work, we constructed a rational map from a simple Lie group $\mathcal G$ to itself that intertwines the standard Poisson--Lie structure on $\mathcal G$ with a Poisson homogeneous one defined by a pair of quasi-triangular…

Quantum Algebra · Mathematics 2026-03-16 Misha Gekhtman , Michael Shapiro , Alek Vainshtein

We describe two types of Poisson pencils generated by a linear bracket and a quadratic one arising from a classical R-matrix. A quantization scheme is discussed for each. The quantum algebras are represented as the enveloping algebras of…

q-alg · Mathematics 2016-09-08 D. Gurevich , V. Rubtsov

We introduce a new type of noncommutative Poisson structure on associative algebras. It induces Poisson structures on the moduli spaces classifying semisimple modules. Path algebras of doubled quivers and preprojective algebras have…

Quantum Algebra · Mathematics 2007-05-23 William Crawley-Boevey

In this paper, we study half-densities enhancing the multiplication map on a symplectic groupoid and which satisfy a suitable associativity condition. This is structurally motivated by the expected complete semiclassical-analytic…

Symplectic Geometry · Mathematics 2026-05-21 Alejandro Cabrera , Gabriel Gonzalo Ledesma Valenotti

The purpose of this paper is to propose a version of the notion of convenient Lie groupoid as a generalization of this concept in finite dimension. The authors point out which obstructions appear in the infinite dimensional context and how…

Differential Geometry · Mathematics 2025-10-15 Fernand Pelletier , Patrick Cabau

Deformation quantization of Poisson manifolds is studied within the framework of an expansion in powers of derivatives of Poisson structures. We construct the Lie group associated with a Poisson bracket algebra which defines a second order…

High Energy Physics - Theory · Physics 2009-12-04 A. V. Bratchikov

Conformal Galilei Algebras labeled by $d,\ell$ (where $d$ is the number of space dimensions and $\ell$ denotes a spin-${\ell}$ representation w.r.t. the $\mathfrak{sl}(2)$ subalgebra) admit two types of central extensions, the ordinary one…

Mathematical Physics · Physics 2016-07-19 N. Aizawa , Z. Kuznetsova , F. Toppan

There is a simple and natural quantization of differential forms on odd Poisson supermanifolds, given by the relation [f,dg]={f,g} for any two functions f and g. We notice that this non-commutative differential algebra has a geometrical…

Quantum Algebra · Mathematics 2007-05-23 Pavol Severa

The Poisson structures on two-dimensional Galilei group, classified in the author previous paper are quantized. The dual quantum Galilei Lie algebras are found.

Quantum Algebra · Mathematics 2007-05-23 Emil Kowalczyk

In this paper we develop Poisson geometry for non-commutative algebras. This generalizes the bi-symplectic geometry which was recently, and independently, introduced by Crawley-Boevey, Etingof and Ginzburg. Our (quasi-)Poisson brackets…

Quantum Algebra · Mathematics 2007-05-23 Michel Van den Bergh

For a complex or real algebraic group G, with g:=Lie(G), quantizations of global type are suitable Hopf algebras F_q[G] or U_q(g) over C[q,q^{-1}]. Any such quantization yields a structure of Poisson group on G, and one of Lie bialgebra on…

Quantum Algebra · Mathematics 2014-03-10 Nicola Ciccoli , Fabio Gavarini

In this paper, we first recall the notion of (noncommutative) Poisson conformal algebras and describe some constructions of them. Then we study the formal distribution (noncommutative) Poisson algebras and coefficient (noncommutative)…

Quantum Algebra · Mathematics 2022-09-27 Jiefeng Liu , Hongyu Zhou