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We classify all isomorphisms between moduli stacks of vector bundles of fixed determinant on a smooth complex projective of genus at least 4. It is shown that each isomorphism between two different moduli stacks can be described as a…

Algebraic Geometry · Mathematics 2025-11-26 David Alfaya , Indranil Biswas , Tomás L. Gómez

Let G be a simple and simply connected complex linear algebraic group. In this paper, we discuss the generalization of the parabolic construction of holomorphic principal G-bundles over a smooth elliptic curve to the case of a singular…

Algebraic Geometry · Mathematics 2007-05-23 R. Friedman , J. W. Morgan

Let X be a geometrically irreducible smooth projective curve over a field k. We describe the algebra of endomorphisms of indecomposable unstable vector bundles over X of rank 2 and degree d. Fixing some numerical invariants, namely the…

Algebraic Geometry · Mathematics 2011-03-01 L. Brambila-Paz , Osbaldo Mata , Nitin Nitsure

We describe weighted projective lines in the sense of Geigle and Lenzing by a moduli problem on the canonical algebra of Ringel. We then go on to study generators of the derived categories of coherent sheaves on the total spaces of their…

Algebraic Geometry · Mathematics 2014-09-25 Tarig Abdelgadir , Kazushi Ueda

We obtain effective results for the global generation of pluritheta line bundles on moduli spaces of vector bundles on curves. The main ingredient is an independent result giving an upper bound on the dimension of the Hilbert scheme of…

Algebraic Geometry · Mathematics 2007-05-23 Mihnea Popa

We connect the homotopy type of simplicial moduli spaces of algebraic structures to the cohomology of their deformation complexes. Then we prove that under several assumptions, mapping spaces of algebras over a monad in an appropriate…

Algebraic Topology · Mathematics 2015-07-20 Sinan Yalin

We give a geometric perspective on the algebra of Drinfeld modular forms for congruence subgroups $\Gamma\leq \GL_2(\bbF_q[T]).$ In particular, we describe an isomorphism between the section ring of a line bundle on the stacky modular curve…

Number Theory · Mathematics 2024-10-15 Jesse Franklin

We present a thorough study of the differential geometry of weightings and develop the theory of weightings for vector bundles, Lie groupoids, and Lie algebroids. We begin by extending the work of Loizides and Meinrenken on weighted…

Differential Geometry · Mathematics 2025-08-15 Daniel Hudson

We study vector-valued Siegel modular forms of genus 2 and level 2. We describe the structure of certain modules of vector-valued modular forms over rings of scalar-valued modular forms.

Algebraic Geometry · Mathematics 2015-02-16 Fabien Cléry , Gerard van der Geer , Samuel Grushevsky

We study the moduli space of genus 3 hyperelliptic curves via the weighted projective space of binary octavics. This enables us to create a database of all genus 3 hyperelliptic curves defined over $\mathbb Q$, of weighted moduli height…

Algebraic Geometry · Mathematics 2018-06-11 Lubjana Beshaj , Monika Polak

We quantize the coordinate ring of the moduli space of B-bundles on the elliptic curve. Here B is a Borel subgroup of some semisimple Lie group. We construct some representations of these algebras and study intertwining operators for these…

Quantum Algebra · Mathematics 2007-05-23 A. V. Odesskii , B. L. Feigin

The holomorphic bootstrap attempts to classify rational conformal field theories. The straight ahead approach is hard to implement when the number of characters become large. We combine all characters of an RCFT to form a vector valued…

High Energy Physics - Theory · Physics 2026-04-28 Suresh Govindarajan , Jagannath Santara

In this article, we derive estimates of Teichm\"uller modular forms, and associated invariants. Let $\mathcal{M}_{g}$ denote the moduli space of compact hyperbolic Riemann surfaces of genus $g\geq 2$, and let $\overline{M}_{g}$ be the…

Complex Variables · Mathematics 2024-12-19 Anilatmaja Aryasomayajula , Debasish Sadhukhan

Let $C$ be a chain-like curve over $\mathbb{C}$. In this paper, we investigate the rationality of moduli spaces of $w$-semistable vector bundles on $C$ of arbitrary rank and fixed determinant by putting some restrictions on the Euler…

Algebraic Geometry · Mathematics 2022-06-07 Suhas B. N. , Praveen Kumar Roy , Amit Kumar Singh

A VB-algebroid is essentially defined as a Lie algebroid object in the category of vector bundles. There is a one-to-one correspondence between VB-algebroids and certain flat Lie algebroid superconnections, up to a natural notion of…

Differential Geometry · Mathematics 2011-09-30 Alfonso Gracia-Saz , Rajan Amit Mehta

This paper focuses on the study of a new category of vector bundles. The objects of this category, called chiral vector bundles, are pairs given by a complex vector bundle along with one of its automorphisms. We provide a classification for…

Mathematical Physics · Physics 2018-01-16 Giuseppe De Nittis , Kiyonori Gomi

We show that mapping class groups associated to all types of real algebraic curves are virtual duality groups. We also deduce some results about the orbifold homotopy groups of the moduli spaces of real algebraic curves. We achieve these…

Geometric Topology · Mathematics 2018-01-22 Alex Pieloch

We characterize all infinite-dimensional graded virtual modules for Thompson's sporadic simple group, whose graded traces are weight 3/2 weakly holomorphic modular forms satisfying certain special properties. We then use these modules to…

Number Theory · Mathematics 2021-02-24 Maryam Khaqan

This paper addresses the topological structures induced on vector spaces by convex modulars that do not satisfy the $\Delta_2$ condition, with particular focus on their applications to variable exponent spaces such as \( \ell^{(p_n)} \) and…

Functional Analysis · Mathematics 2025-04-23 Mohamed Khamsi , Jan Lang , Osvaldo Mendez

In this letter we investigate some aspects of the noncommutative differential geometry based on derivations of the algebra of endomorphisms of an oriented complex hermitian vector bundle. We relate it, in a natural way, to the geometry of…

Differential Geometry · Mathematics 2009-10-31 T. Masson
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