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We observe that if we are interested primarily in degeneration arguments, there is a weaker notion of (semi)stability for vector bundles on reducible curves, which is sufficient for many applications, and does not depend on a choice of…

Algebraic Geometry · Mathematics 2019-08-15 Brian Osserman

We study the problem of defining line bundles over certain non-Hausdorff spaces known as Quantum Tori, motivated by the proposed theory of Real Multiplication for real quadratic fields. We draw analogies from the theory of Line Bundles over…

Number Theory · Mathematics 2007-08-13 Lawrence Taylor

A compact classification of the projective lines defined over (commutative) rings (with unity) of all orders up to thirty-one is given. There are altogether sixty-five different types of them. For each type we introduce the total number of…

Algebraic Geometry · Mathematics 2011-11-09 Metod Saniga , Michel Planat , Maurice Kibler , Petr Pracna

Motivated by the problem of finding algebraic constructions of finite coverings in commutative algebra, the Steinitz realization problem in number theory, and the study of Hurwitz spaces in algebraic geometry, we investigate the vector…

Algebraic Geometry · Mathematics 2019-01-08 Anand Deopurkar , Anand Patel

We consider when a smooth vector bundle endowed with a connection possesses non-trivial, local parallel sections. This is accomplished by means of a derived flag of subsets of the bundle. The procedure is algebraic and rests upon the…

Differential Geometry · Mathematics 2008-04-11 Richard Atkins

This paper is based on my talk at ICM on recent progress in a number of classical problems of linear algebra and representation theory, based on new approach, originated from geometry of stable bundles and geometric invariant theory.

Representation Theory · Mathematics 2007-05-23 Alexander Klyachko

Let X be a smooth projective variety defined over an algebraically closed field k. Nori constructed a category of vector bundles on X, called essentially finite vector bundles, which is reminiscent of the category of representations of the…

Algebraic Geometry · Mathematics 2009-12-21 Indranil Biswas , Joao Pedro P. dos Santos

I repeat my definition for quantization of a vector bundle. For the case of Toeplitz and geometric quantization of a compact Kaehler Manifold, I give a construction for quantizing any smooth vector bundle which depends functorially on a…

Quantum Algebra · Mathematics 2009-10-31 Eli Hawkins

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 give a complete classification of equivariant vector bundles of rank two over smooth complete toric surfaces and construct moduli spaces of such bundles. This note is a direct continuation of an earlier note where we developed a general…

Algebraic Geometry · Mathematics 2009-08-06 Markus Perling

The purpose of this article is to introduce projective geometry over composition algebras : the equivalent of projective spaces and Grassmannians over them are defined. It will follow from this definition that the projective spaces are in…

Algebraic Geometry · Mathematics 2007-05-23 Pierre-Emmanuel Chaput

We review the notions of symplectic and orthogonal vector bundles over curves, and the connection between principal parts and extensions of vector bundles. We give a criterion for a certain extension of rank 2n to be symplectic or…

Algebraic Geometry · Mathematics 2007-05-23 George H. Hitching

In this article, we study Newton-Okounkov bodies on projective vector bundles over curves. Inspired by Wolfe's estimates used to compute the volume function on these varieties, we compute all Newton-Okounkov bodies with respect to linear…

Algebraic Geometry · Mathematics 2018-10-16 Pedro Montero

We construct examples of non-isomorphic algebraic vector bundles on the punctured affine space with isomorphic pullbacks to the smooth quadric.

Group Theory · Mathematics 2013-03-05 Brent Doran , Jun Yu

In this article, we investigate the instability of syzygy bundles corresponding to globally generated vector bundles on smooth irreducible projective surfaces under change of polarization.

Algebraic Geometry · Mathematics 2026-02-09 Snehajit Misra

We give a description of the vector $G$-bundles over $G$-spaces with quasi-free proper action of discrete group $G$ in terms of the classifying space.

Algebraic Topology · Mathematics 2009-01-22 Alexander S. Mishchenko , Quitzeh Morales Meléndez

We define and explore the notion of linear weightings for vector bundles, extending the recent work by Loizides and Meinrenken. We construct weighted normal bundles and deformation spaces in the category of vector bundles. We explain how a…

Differential Geometry · Mathematics 2023-12-06 Daniel Hudson

We extend our previous theory of etale parallel transport to a larger class of slope zero vector bundles on p-adic curves. The new class is stable under pullback by ramified coverings. We also construct p-adic representations of a central…

Algebraic Geometry · Mathematics 2009-02-10 C. Deninger , A. Werner

We explain how to define an embedding of a tame stack over a noetherian ring into a certain generalization of a weighted projective stack using a notion of ample vector bundle on the stack. As applications we construct algebraic moduli…

Algebraic Geometry · Mathematics 2024-07-03 Daniel Bragg , Martin Olsson , Rachel Webb

In this note, we describe a theory of linked Hom spaces which complements that of linked Grassmannians. Given two chains of vector bundles linked by maps in both directions, we give conditions for the space of homomorphisms from one chain…

Algebraic Geometry · Mathematics 2010-09-01 Brian Osserman