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We study the moduli space of twisted quasimaps from a fixed smooth projective curve to a Nakajima's quiver variety and the moduli space of $\delta$-stable framed twisted quiver bundles with moment map relations. We show that they carry…

Algebraic Geometry · Mathematics 2014-04-08 Bumsig Kim

An algebraic framework for noncommutative bundles with (quantum) homogeneous fibres is proposed. The framework relies on the use of principal coalgebra extensions which play the role of principal bundles in noncommutative geometry which…

Quantum Algebra · Mathematics 2021-03-03 Tomasz Brzeziński , Wojciech Szymański

The moduli spaces of theta-semistable representations of a finite quiver can be packaged together to form a noncommutative compact manifold.

Algebraic Geometry · Mathematics 2016-09-07 Lieven Le Bruyn

These are expanded lecture notes of a mini-course whose objectives were to introduce the basic concepts, constructions and techniques of noncommutative geometry, as well as their uses as a framework for modelling quantum spacetime. Key…

High Energy Physics - Theory · Physics 2025-12-08 Richard J. Szabo

This article describes some complex-analytic aspects of the moduli space of the finite-dimensional complex representations of a finite quiver, which are stable with respect to a fixed rational weight. We construct a natural structure of a…

Algebraic Geometry · Mathematics 2017-11-15 Pradeep Das , S. Manikandan , N. Raghavendra

We consider a twisted version of quantum groups corepresentations. This generalization amounts to include in the theory the case where quantum space coordinates and its endomorphism matrix entries belong to a non-commutative quadratic…

Quantum Algebra · Mathematics 2007-05-23 H. Montani , R. Trinchero

This paper contains detailed proofs of our results on the moduli space and the structure of noncommutative 3-spheres. We develop the notion of central quadratic form for quadratic algebras, and a general theory which creates a bridge…

Quantum Algebra · Mathematics 2007-05-23 Alain Connes , Michel Dubois-Violette

Quantum groups and quantum homogeneous spaces - developed by several authors since the 80's - provide a large class of examples of algebras which for many reasons we interpret as `coordinate algebras' over noncommutative spaces. This…

Operator Algebras · Mathematics 2009-12-07 Francesco D'Andrea

In this paper, we develop a Lie group theoretic approach for parametric representation of unitary matrices. This leads to develop a quantum neural network framework for quantum circuit approximation of multi-qubit unitary gates. Layers of…

Quantum Physics · Physics 2025-03-26 Rohit Sarma Sarkar , Bibhas Adhikari

We introduce a theory of geometry for nonnoetherian commutative algebras with finite Krull dimension. In particular, we establish new notions of normalization and height: depiction (a special noetherian overring) and geometric codimension.…

Algebraic Geometry · Mathematics 2015-12-24 Charlie Beil

In this work we study a realization of moduli spaces of framed quiver representations as Grassmannians of submodules devised by Marcus Reineke. Obtained is a generalization of this construction for finite dimensional associative algebras…

Algebraic Geometry · Mathematics 2010-12-21 Stanislav Fedotov

We construct the moduli space of finite dimensional representations of generalized quivers for arbitrary connected complex reductive groups using Geometric Invariant Theory as well as Symplectic reduction methods. We explicit characterize…

Algebraic Geometry · Mathematics 2017-03-31 Artur de Araujo

We develop a new framework for noncommutative differential geometry based on double derivations. This leads to the notion of moment map and of Hamiltonian reduction in noncommutative symplectic geometry. For any smooth associative algebra…

Algebraic Geometry · Mathematics 2007-05-23 William Crawley-Boevey , Pavel Etingof , Victor Ginzburg

We introduce a double framing construction for moduli spaces of quiver representations. It allows us to reduce certain sheaf cohomology computations involving the universal representation, to computations involving line bundles, making them…

Algebraic Geometry · Mathematics 2025-04-02 Pieter Belmans , Ana-Maria Brecan , Hans Franzen , Markus Reineke

In this paper we introduce and study the algebraic generalization of non commutative convolutional neural networks. We leverage the theory of algebraic signal processing to model convolutional non commutative architectures, and we derive…

Machine Learning · Computer Science 2023-07-07 Alejandro Parada-Mayorga , Landon Butler , Alejandro Ribeiro

We use categorical method and birational geometry to study moduli spaces of quiver representations. From certain "representable" functor, we construct a birational transformation from the moduli space of representations of one quiver to…

Algebraic Geometry · Mathematics 2013-04-15 Jiarui Fei

We present a general framework for Matrix theory compactified on a quotient space R^n/G, with G a discrete group of Euclidean motions in R^n. The general solution to the quotient conditions gives a gauge theory on a noncommutative space. We…

High Energy Physics - Theory · Physics 2016-08-25 Pei-Ming Ho , Yong-Shi Wu

The purpose of this paper is to describe a method for computing homotopy groups of the space of $\alpha$-stable representations of a quiver with fixed dimension vector and stability parameter $\alpha$. The main result is that the homotopy…

Symplectic Geometry · Mathematics 2009-10-27 Graeme Wilkin

We present results and examples which show that the consideration of a certain tubular mutation is advantageous in the study of noncommutative curves which parametrize the simple regular representations of a tame bimodule. We classify all…

Representation Theory · Mathematics 2008-06-16 Dirk Kussin

Let k be a perfect field and let K/k be a finite extension of fields. An arithmetic noncommutative projective line is a noncommutative space equal to the projectivization of the noncommutative symmetric algebra of a k-central two -sided…

Quantum Algebra · Mathematics 2014-05-30 Adam Nyman