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We explicitly describe the moduli space $M^s(X,3)$ of stable rank 2 parabolic bundles over an elliptic curve $X$ with trivial determinant bundle and 3 marked points. Specifically, we exhibit $M^s(X,3)$ as a blow-up of an embedded elliptic…

Algebraic Geometry · Mathematics 2020-07-07 David Boozer

In this paper we define a Poisson structure on some moduli spaces related to principal G-bundles on elliptic curves, the simplest example being the moduli space of stable pairs: a vector bundle and its global section. We also study…

alg-geom · Mathematics 2007-05-23 Alexander Polishchuk

This article follow the article {http://hal.archives-ouvertes.fr/hal-00361030/fr/} in which the author characterize the fact of being of finite volume for a convex projective surface. We show here that the moduli space…

Geometric Topology · Mathematics 2014-11-11 Ludovic Marquis

Let $X$ be a smooth, irreducible, projective algebraic surface, and let $\alpha \in \mathbb{Q}[m]_{>0}$ be a polynomial. In this paper, we determine topological and geometric properties of the moduli space of $\alpha$-stable coherent…

Algebraic Geometry · Mathematics 2026-03-23 L. Costa , I. Macías Tarrío , L. Roa-Leguizamón

We introduce one of the most beautiful algebraic varieties known, a quintic hypersurface in projective five-space, which is invariant under the action of the Weyl group of $E_6$. This variety is intricately related with many other moduli…

alg-geom · Mathematics 2008-02-03 Bruce Hunt

Let P^n be the projective space of dimension n on an algebraically closed field of characteristic 0 and F be the image of the Segre embedding of P^1xP^1xP^1 inside P^7. In the present paper we deal with the moduli spaces of locally free…

Algebraic Geometry · Mathematics 2014-12-10 Gianfranco Casnati , Daniele Faenzi , Francesco Malaspina

Let M be the moduli space of irreducible flat PSL(2,R) connections on a punctured surface of finite type with parabolic holonomies around punctures. By using a notion of admissibility of an ideal arc, M is covered by dense open subsets…

Geometric Topology · Mathematics 2007-05-23 R. M. Kashaev

We consider moduli spaces of dynamical systems of correspondences over the projective line as a generalization of moduli spaces of dynamical systems of endomorphisms on the projective line. We obtain the rationality of the moduli spaces.…

Dynamical Systems · Mathematics 2021-09-15 Rin Gotou

We prove the existence of quasi-projective coarse moduli spaces parametrising certain complete flags of subschemes of a fixed projective space $\mathbb{P}(V)$ up to projective automorphisms. The flags of subschemes being parametrised are…

Algebraic Geometry · Mathematics 2024-10-08 George Cooper

In a previous paper, the first two named authors established an isomorphism between the moduli space of framed flags of sheaves on the projective plane and the moduli space of stable representations of a certain quiver. In the present note,…

Algebraic Geometry · Mathematics 2021-05-19 Rodrigo A. Von Flach , Marcos Jardim , Valeriano Lanza

We classify parallelizable noncommutative manifold structures on finite sets of small size in the general formalism of framed quantum manifolds and vielbeins introduced previously. The full moduli space is found for $\le 3$ points, and a…

General Relativity and Quantum Cosmology · Physics 2009-11-10 S. Majid , E. Raineri

We study the moduli space of coherent systems in $P^2$ using the Segre invariant. We obtain necessary conditions for the existence of $\alpha$-semistable coherent systems $(E,V)$ of type $(2, c_1, c_2, k)$, with $k \geq 2$. Afterwards, we…

Algebraic Geometry · Mathematics 2024-07-08 O. Mata-Gutiérrez , L. Roa-Leguizamón , H. Torres-López

We show that the moduli space of marked branched projective structures of genus g and branching degree n is a complex analytic space. In the case g > 1 we show that this moduli space is of dimension 6 g - 6 + n and we characterize its…

Algebraic Geometry · Mathematics 2023-11-17 Gustave Billon

We describe the Chow rings of moduli spaces of ordered configurations of points on the projective line for arbitrary (sufficiently generic) stabilities. As an application, we exhibit such a moduli space admitting two small…

Algebraic Geometry · Mathematics 2016-11-04 Hans Franzen , Markus Reineke

Motivated by the relation between (twisted) K3 surfaces and special cubic fourfolds, we construct moduli spaces of polarized twisted K3 surfaces of any fixed degree and order. We do this by mimicking the construction of the moduli space of…

Algebraic Geometry · Mathematics 2019-10-09 Emma Brakkee

We give a complete description of the two-dimensional moduli spaces of stable Higgs bundles of rank 2 over complex projective line with one irregular singular point, having a regular leading-order term, and endowed with a generic compatible…

Algebraic Geometry · Mathematics 2018-04-24 Péter Ivanics , András I. Stipsicz , Szilárd Szabó

We construct a moduli space of stable maps with fields associated to a triple $(X,E,s)$ of a projective variety (or a DM stack with projective moduli space) a vector bundle and a section. We show the class coincides up to a sign with the…

Algebraic Geometry · Mathematics 2021-09-20 Renata Picciotto

First we give a complex ball uniformization of the moduli space of 8 ordered points on the projective line by using the theory of periods of K3 surfaces. Next we give a projective model of this moduli space by using automorphic forms on a…

Algebraic Geometry · Mathematics 2007-05-23 Shigeyuki Kondo

Let $M$ be the moduli space of rank 3 parabolic vector bundles over a Riemann surface with several punctures. By the Mehta-Seshadri correspondence, this is the space of rank 3 unitary representations of the fundamental group of the…

Differential Geometry · Mathematics 2019-03-19 Elisheva Adina Gamse

We study certain moduli spaces of stable vector bundles of rank two on cubic and quartic threefolds. In many cases under consideration, it turns out that the moduli space is complete and irreducible and a general member has vanishing…

Algebraic Geometry · Mathematics 2008-04-21 Indranil Biswas , Jishnu Biswas , G. V. Ravindra