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In this paper we generalize standard results about non-commutative resolutions of quotient singularities for finite groups to arbitrary reductive groups. We show in particular that quotient singularities for reductive groups always have…

Algebraic Geometry · Mathematics 2017-02-16 Špela Špenko , Michel Van den Bergh

We give an explicit classification of the cominuscule parabolic subalgebras of all complex simple finite dimensional Lie superalgebras.

Rings and Algebras · Mathematics 2012-01-04 Dimitar Grantcharov , Milen Yakimov

In this paper, we show that it is possible for a commutative ring with identity to be non-atomic (that is, there exist non-zero nonunits that cannot be factored into irreducibles) and yet have a strongly atomic polynomial extension. In…

Commutative Algebra · Mathematics 2016-12-20 Jim Coykendall , Stacy Trentham

In this paper, we study the complexity of computing the determinant of a matrix over a non-commutative algebra. In particular, we ask the question, "over which algebras, is the determinant easier to compute than the permanent?" Towards…

Computational Complexity · Computer Science 2018-10-09 Steve Chien , Prahladh Harsha , Alistair Sinclair , Srikanth Srinivasan

We define a Frobenius algebra over fusion categories of the form Rep$(G)\boxtimes$Rep$(G)$ which generalizes the diagonal subgroup of $G\times G$. This allows us to extend field theoretical constructions which depend on the existence of a…

High Energy Physics - Theory · Physics 2024-05-15 Daniel Robbins , Thomas Vandermeulen

We show that for finite n at least 3, every first-order axiomatisation of the varieties of representable n-dimensional cylindric algebras, diagonal-free cylindric algebras, polyadic algebras, and polyadic equality algebras contains an…

Logic · Mathematics 2013-05-22 Jannis Bulian , Ian Hodkinson

Let k be an arbitrary field of characteristic zero. In this paper we study quotients of k-rational conic bundles over projective line by finite groups of automorphisms. We construct smooth minimal models for such quotients. We show that any…

Algebraic Geometry · Mathematics 2015-04-22 Andrey Trepalin

The classical action of a two dimensional N=2 supersymmetric theory, characterized by a general K\"{a}hler potential, is written down on a non(anti)commutative superspace. The action has a power series expansion in terms of the determinant…

High Energy Physics - Theory · Physics 2010-02-03 B. Chandrasekhar , Alok Kumar

Specializing properly the parameters contained in the maximal cyclic representation of the non-restricted A-type quantum algebra at roots of unity, we find the unique primitive vector in it. We show that the submodule generated by the…

Quantum Algebra · Mathematics 2009-11-07 Toshiki Nakashima

A quantum group of type A is defined as a Hopf algebra associated to a Hecke symmetry. We show the homology of a Koszul complex associated to the Hecke symmetry is one dimensional and determines a group-like element in the Hopf algebra.…

Quantum Algebra · Mathematics 2016-09-07 Phung Ho Hai

We study finite-dimensional commutative algebras, which satisfy the Jacobi identity. Such algebras are Jordan algebras. We describe some of their properties and give a classification in dimensions $n<7$ over algebraically closed fields of…

Rings and Algebras · Mathematics 2014-07-25 Dietrich Burde , Alice Fialowski

We study central simple algebras with involution of the first kind that become hyperbolic over the function field of the conic associated to a given quaternion algebra $Q$. We classify these algebras in degree~4 and give an example of such…

Rings and Algebras · Mathematics 2008-12-18 Anne Quéguiner-Mathieu , Jean-Pierre Tignol

We apply ourselves to the noncommutative geometry of frame bundles by showing that each C$^*$-algebraic noncommutative principal $\mathrm{SO}(n)$-bundle is, up to isomorphism, uniquely determined by its associated noncommutative vector…

Operator Algebras · Mathematics 2025-12-24 Stefan Wagner

We define ''convergence'' for noncommutative power series and construct two topologies on the algebra of power series, convergent with respect to a positive radius. We indicate all finite dimensional continuous representations of this…

Quantum Algebra · Mathematics 2007-05-23 Frank Schuhmacher

A new class of nonassociative algebras, Vidinli algebras, is defined based on recent work of Co\c{s}kun and Eden. These algebras are conic (or quadratic) algebras with the extra restriction that the commutator of any two elements is a…

Rings and Algebras · Mathematics 2026-02-02 Alberto Elduque , Javier Rández-Ibáñez

Let $C$ be a nonsingular projective curve over an algebraically closed field of characteristic $p>0$ and $I\subset C$ be a finite set. If $\mathcal{U}_{C,\,\omega}$ denotes the moduli space of semistable parabolic bundles of rank $r$ and…

Algebraic Geometry · Mathematics 2023-05-17 Xiaotao Sun , Mingshuo Zhou

We determine normal forms of the multiplication of four-dimensional anti-commutative algebras over a field $\mathbb K$ of characteristic zero having an analogous family of flags of subalgebras as the four-dimensional non-Lie binary Lie…

Rings and Algebras · Mathematics 2022-09-01 Ágota Figula , Péter T. Nagy

In this work, we present algebraic results concerning the combined matrices $\mathcal{C}(A)$, where the entries of $A$ belong to a number field $K$ and $A$ is a non-singular matrix. In other words, $A$ is a $n\times n$ matrix belonging to…

Number Theory · Mathematics 2024-12-03 Primitivo B. Acosta-Humánez , Randy Leonardo , Máximo Santana

In the paper we describe the C*-algebras of noncommutative spherical tight frames over some C*-algebras and then apply to study the noncommutative version of the universal classifying space.

K-Theory and Homology · Mathematics 2007-05-23 Do Ngoc Diep

Let $M$ be a commutative homogeneous space of a compact Lie group $G$ and $A$ be a closed $G$-invariant subalgebra of the Banach algebra $C(M)$. A function algebra is called antisymmetric if it does not contain nonconstant real functions.…

Functional Analysis · Mathematics 2009-07-17 V. M. Gichev
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