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We formulate a mathematical setup for computational neural networks using noncommutative algebras and near-rings, in motivation of quantum automata. We study the moduli space of the corresponding framed quiver representations, and find…

Algebraic Geometry · Mathematics 2022-01-19 George Jeffreys , Siu-Cheong Lau

Using the formalism of discrete quantum group gauge theory, one can construct the quantum algebras of observables for the Hamiltonian Chern-Simons model. The resulting moduli algebras provide quantizations of the algebra of functions on the…

q-alg · Mathematics 2008-02-03 Anton Yu. Alekseev , Volker Schomerus

This is a note in which we first review symmetries of moduli spaces of stable meromorphic connections on trivial vector bundles over the Riemann sphere, and next discuss symmetries of their integrable deformations as an application. In the…

Classical Analysis and ODEs · Mathematics 2018-03-16 Kazuki Hiroe

In this paper, we study moduli spaces of representations of certain quivers with relations. For quivers without relations and other categories of homological dimension one, a lot of information is known about the cohomology of their moduli…

Algebraic Geometry · Mathematics 2017-06-30 Matthew Woolf

An introduction to moduli spaces of representations of quivers is given, and results on their global geometric properties are surveyed. In particular, the geometric approach to the problem of classification of quiver representations is…

Representation Theory · Mathematics 2008-02-18 Markus Reineke

A noncommutative-geometric formalism of framed principal bundles is sketched, in a special case of quantum bundles (over quantum spaces) possessing classical structure groups. Quantum counterparts of torsion operators and Levi-Civita type…

q-alg · Mathematics 2008-02-03 Mico Durdevic

In this paper, we give a construction of the moduli space of filtered representations of a given quiver of fixed dimension vector with the appropriate notion of stability. The construction of the moduli of filtered representations uses the…

Algebraic Geometry · Mathematics 2020-08-12 Sanjay Amrutiya , Umesh Dubey

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

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

It is shown that certain transformations on quiver-dimension vector pairs induce isomorphisms on the corresponding moduli spaces of quiver representations and map a stable dimension vector to a stable dimension vector. This result combined…

Representation Theory · Mathematics 2023-12-27 M. Domokos

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

We construct new moduli spaces of quiver representations with multiplicities, i.e. over rings of truncated power series. This includes moduli of framed representations and analogues of Nakajima quiver varieties. Our construction relies on…

Algebraic Geometry · Mathematics 2025-10-29 Victoria Hoskins , Joshua Jackson , Tanguy Vernet

In this expository article we give a categorical definition of the integral cohomology ring of a stack. We show that for quotient stacks the categorical cohomology may be identified with equivariant cohomology. Via this identification we…

Algebraic Geometry · Mathematics 2011-08-08 Dan Edidin

A system of functional equations relating the Euler characteristics of moduli spaces of stable representations of quivers and the Euler characteristics of (Hilbert scheme-type) framed versions of quiver moduli is derived. This is applied to…

Algebraic Geometry · Mathematics 2014-01-14 Markus Reineke

We provide a construction of the moduli spaces of framed Hitchin pairs and their master spaces. These objects have come to interest as algebraic versions of solutions of certain coupled vortex equations by work of Lin and Stupariu. Our…

Algebraic Geometry · Mathematics 2007-05-23 Alexander Schmitt

There are multiple conjectures relating the cohomological Hall algebras (CoHAs) of certain substacks of the moduli stack of representations of a quiver $Q$ to the Yangian $Y^{Q}_{MO}$ by Maulik-Okounkov, whose construction is based on the…

Algebraic Geometry · Mathematics 2023-09-21 Tommaso Maria Botta

The moduli stack of representations of a quiver, or coherent sheaves on a proper curve, carries two structures on its cohomology: a Hall algebra and braided vertex coalgebra. We show that they are compatible, by developing a formulation of…

Algebraic Geometry · Mathematics 2021-10-28 Alexei Latyntsev

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 embed several copies of the derived category of a quiver and certain line bundles in the derived category of an associated moduli space of representations, giving the start of a semiorthogonal decomposition. This mirrors the…

Algebraic Geometry · Mathematics 2025-04-22 Gianni Petrella

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
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