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We study the space of stability conditions on the total space of the canonical bundle over the projective plane. We explicitly describe a chamber of geometric stability conditions, and show that its translates via autoequivalences cover a…

Algebraic Geometry · Mathematics 2019-12-19 Arend Bayer , Emanuele Macri

We prove an existence theorem for gauge invariant $L^2$-normal neighborhoods of the reduction loci in the space ${\cal A}_a(E)$ of oriented connections on a fixed Hermitian 2-bundle $E$. We use this to obtain results on the topology of the…

Geometric Topology · Mathematics 2014-11-11 Andrei Teleman

We study the spaces of stable real and quaternionic vector bundles on a real algebraic curve. The basic relationship is established with unitary representations of an extension Z/2 by the fundamental group. By comparison with the space of…

Algebraic Geometry · Mathematics 2009-04-03 Indranil Biswas , Johannes Huisman , Jacques C. Hurtubise

We find a complete set of relations for the rational cohomology ring of the moduli space of rank three stable bundles over a Riemann surface of genus g and also show that the Pontryagin ring vanishes in degree 12g-8 and greater. The results…

alg-geom · Mathematics 2008-02-03 Richard Earl

For a compact spinc manifold $X$ with boundary $b_1(\partial X)=0$, we consider moduli spaces of solutions to the Seiberg-Witten equations in a generalized double Coulomb slice in $L^2_1$ (i.e., $W^{1,2}$) Sobolev regularity. We prove they…

Differential Geometry · Mathematics 2021-12-07 Piotr Suwara

In this manuscript, we aim to classify and characterize the moduli space of homogeneous spin connections and homogeneous SU(2) connections on three-dimensional Riemannian homogeneous spaces. An analysis of the topology of the associated…

Mathematical Physics · Physics 2025-09-23 Matteo Bruno , Gabriele Peluso

Conjecture F from [VW12] states that the complements of closures of certain strata of the symmetric power of a smooth irreducible complex variety exhibit rational homological stability. We prove a generalization of this conjecture to the…

Algebraic Topology · Mathematics 2014-12-17 Alexander Kupers , Jeremy Miller , TriThang Tran

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

We prove a homological stabilization theorem for Hurwitz spaces: moduli spaces of branched covers of the complex projective line. This has the following arithmetic consequence: let l>2 be prime and A a finite abelian l-group. Then there…

Number Theory · Mathematics 2015-12-03 Jordan S. Ellenberg , Akshay Venkatesh , Craig Westerland

Let $X$ be a closed, four-dimensional, oriented, smooth manifold with a Riemannian metric, $g$, let $G$ be a compact Lie group, and $P$ be a principal $G$ bundle over $X$. D. Groisser and T. Parker (1987, 1989) and S. K. Donaldson (1990)…

Differential Geometry · Mathematics 2015-04-23 Paul M. N. Feehan

In this article we will construct a universal moduli space of stable parabolic vector bundles over the moduli space of marked Deligne-Mumford stable curves $\overline{M}_{_{g, n}}$. The objects that appear over the boundary of…

Algebraic Geometry · Mathematics 2022-12-19 Jagadish Pine

Let $F$ be a genus $g$ curve and $\sigma: F \to F$ a real structure with the maximal possible number of fixed circles. We study the real moduli space $\N' = \Fix (\sigma^{#})$ where $\sigma^{#}: \N \to \N$ is the induced real structure on…

Symplectic Geometry · Mathematics 2008-07-09 Nikolai Saveliev , Shuguang Wang

Given an $n$-tuple of positive real numbers $\alpha$ we consider the hyperpolygon space $X(\alpha)$, the hyperk\"{a}hler quotient analogue to the K\"ahler moduli space of polygons in $\mathbb{R}^3$. We prove the existence of an isomorphism…

Algebraic Geometry · Mathematics 2015-03-17 Leonor Godinho , Alessia Mandini

In this paper we describe compactified universal Jacobians, i.e. compactifications of the moduli space of line bundles on smooth curves obtained as moduli spaces of rank 1 torsion-free sheaves on stable curves, using an approach due to…

Algebraic Geometry · Mathematics 2021-08-23 Jesse Leo Kass , Nicola Pagani

We use Donaldson invariants of regular surfaces with p_g >0 to make quantitative statements about modulispaces of stable rank 2 sheaves. We give two examples: a quantitative existence theorem for stable bundles, and a computation of the…

Algebraic Geometry · Mathematics 2007-05-23 Rogier Brussee

Using a quasi-linear version of Hodge theory, holomorphic vector bundles in a neighbourhood of a given polystable bundle on a compact Kaehler manifold are shown to be (poly)stable if and only if their corresponding classes are (poly)stable…

Differential Geometry · Mathematics 2020-02-11 Nicholas Buchdahl , Georg Schumacher

We analyze the stability of the moduli at the quantum level in an open-string model realizing the $\mathcal{N}=2\to \mathcal{N}=0$ spontaneous breaking of supersymmetry in four-dimensional Minkowski spacetime. In the region of moduli space…

High Energy Physics - Theory · Physics 2020-05-06 Thibaut Coudarchet , Hervé Partouche

For any smooth compact manifold $W$ of dimension at least two we prove that the classifying spaces of its group of diffeomorphisms which fix a set of $k$ points or $k$ embedded disks (up to permutation) satisfy homology stability. The same…

Algebraic Topology · Mathematics 2015-12-16 Ulrike Tillmann

The cohomology ring of the moduli space of stable holomorphic vector bundles of rank n and degree d over a Riemann surface of genus g>1 has a standard set of generators when n and d are coprime. When n=2 the relations between these…

Algebraic Geometry · Mathematics 2007-05-23 Richard Earl , Frances Kirwan

The existence of stable ACM vector bundles of high rank on algebraic varieties is a challenging problem. In this paper, we study stable Ulrich bundles (that is, stable ACM bundles whose corresponding module has the maximum number of…

Algebraic Geometry · Mathematics 2011-05-06 Marta Casanellas , Robin Hartshorne