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We study stable vector bundles over the modular curve X(p) corresponding to the principal congruence subgroup of the modular group of prime level p which are invariant with respect to its automorphism group.

alg-geom · Mathematics 2007-05-23 Igor V. Dolgachev

We first present the mixed Hilbert-Samuel multiplicities of analytic local rings over \mathbb{C} as generalized Lelong numbers and further represent them as intersection numbers in the context of modifications. As applications, we give…

Complex Variables · Mathematics 2024-09-17 Fusheng Deng , Yinji Li , Qunhuan Liu , Xiangyu Zhou

In this paper we consider the singularities of the varieties parameterizing stable vector bundles of fixed rank and degree with sections on a smooth curve of genus at least two. In particular, we extend results of Y. Laszlo, and of the…

Algebraic Geometry · Mathematics 2012-07-05 Sebastian Casalaina-Martin , Montserrat Teixidor i Bigas

We study moduli of holomorphic vector bundles on non-compact varieties. We discuss filtrability and algebraicity of bundles and calculate dimensions of local moduli. As particularly interesting examples, we describe numerical invariants of…

Algebraic Geometry · Mathematics 2009-02-11 Edoardo Ballico , Elizabeth Gasparim , Thomas Köppe

We study vector bundles on the moduli stack of elliptic curves over a local ring R. If R is a field or a discrete valuation ring of (residue) characteristic not 2 or 3, all these vector bundles are sums of line bundles. For R the 3-local…

Algebraic Geometry · Mathematics 2015-04-21 Lennart Meier

In this paper, we give complex geometric descriptions of the notions of algebraic geometric positivity of vector bundles and torsion-free coherent sheaves, such as nef, big, pseudo-effective and weakly positive, by using singular Hermitian…

Algebraic Geometry · Mathematics 2021-03-17 Masataka Iwai

We study the sheaf of locally square integrable holomorphic section of vector bundle with semi-positive curved singular Hermitian metric. We confirm the coherence when its induced determinant metric has analytic singularities.

Complex Variables · Mathematics 2022-09-13 Yongpan Zou

In this paper, we study the $(k,l)$-stable vector bundles over non-singular projective curve $X$ of genus $g\geq 2,$ its relation with stability and Segre invariants. For rank 2 and 3, we give an explicit description and relation of…

Algebraic Geometry · Mathematics 2016-02-18 Osbaldo Mata-Gutiérrez

In this paper, we study how certain vector bundles on an elliptic surface are changed under logarithmic transformations.

Algebraic Geometry · Mathematics 2022-04-20 Ludmil Katzarkov , Kyoung-Seog Lee

We study the existence of canonical K\"ahler metrics on the projectivisation of strictly Mumford semistable holomorphic vector bundles over a complex curve. We also provide an algebro-geometric characterization of these metrics.

Differential Geometry · Mathematics 2017-05-17 Julien Keller

We investigate the analog of holomorphic vector bundles in the context of Sasakian manifolds.

Differential Geometry · Mathematics 2009-03-20 Indranil Biswas , Georg Schumacher

We study moduli spaces of vector bundles on a two-dimensional neighbourhood $Z_k$ of an irreducible curve $\ell = CP^1$ with $\ell^2 = -k$ and give an explicit construction of these moduli as stratified spaces. We give sharp bounds for the…

Algebraic Geometry · Mathematics 2009-09-04 Edoardo Ballico , Elizabeth Gasparim , Thomas Köppe

We survey some recent progress in the theory of vector bundles on algebraic varieties and related questions in algebraic K-theory.

Algebraic Geometry · Mathematics 2021-11-08 Aravind Asok , Jean Fasel

We extend the concept of Segre's Invariant to vector bundles on a surface $X$. For $X=\mathbb{P}^2$ we determine what numbers can appear as the Segre Invariant of a rank $2$ vector bundle with given Chern's classes. The irreducibility of…

Algebraic Geometry · Mathematics 2021-08-17 L. Roa-Leguizamón , H. Torres López , A. G. Zamora

We study VB-groupoids and VB-algebroids, which are vector bundles in the realm of Lie groupoids and Lie algebroids. Through a suitable reformulation of their definitions, we elucidate the Lie theory relating these objects, i.e., their…

Differential Geometry · Mathematics 2016-01-26 Henrique Bursztyn , Alejandro Cabrera , Matias del Hoyo

This is a survey article on recent results on vector bundles on symmetric product of non-singular projective curves.

Algebraic Geometry · Mathematics 2017-02-20 D. S. Nagaraj

We study $S^1$-bundles and $S^1$-gerbes over differentiable stacks in terms of Lie groupoids, and construct Chern classes and Dixmier-Douady classes in terms of analogues of connections and curvature.

Differential Geometry · Mathematics 2007-05-23 Kai Behrend , Ping Xu

We introduce a notion of singular hermitian metrics (s.h.m.) for holomorphic vector bundles and define positivity in view of $L^2$-estimates. Associated with a suitably positive s.h.m. there is a (coherent) sheaf 0-th kernel of a certain…

alg-geom · Mathematics 2008-02-03 Mark Andrea A. de Cataldo

We study flat vector bundles over complex parallelizable manifolds.

Algebraic Geometry · Mathematics 2009-09-25 Jörg Winkelmann

We investigate the minimal singularities of metrics on a big line bundle $L$ over a projective manifold when the stable base locus $Y$ of $L$ is a submanifold of codimension $r\geq 1$. Under some assumptions on the normal bundle and a…

Complex Variables · Mathematics 2018-11-20 Genki Hosono , Takayuki Koike
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