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We produce group structures on certain sets of topological vector bundles of fixed rank. In particular, we put a group structure on complex rank $2$ bundles on $\mathbb{C}P^3$ with fixed first Chern class. We show that this binary operation…

Algebraic Topology · Mathematics 2025-08-20 Morgan Opie

We describe polar homology groups for complex manifolds. The polar k-chains are subvarieties of complex dimension k with meromorphic forms on them, while the boundary operator is defined by taking the polar divisor and the Poincare residue…

Algebraic Geometry · Mathematics 2009-11-07 B. Khesin , A. Rosly

We investigate stratified-algebraic vector bundles on a real algebraic variety X. A stratification of X is a finite collection of pairwise disjoint, Zariski locally closed subvarieties whose union is X. A topological vector bundle on X is…

Algebraic Geometry · Mathematics 2016-03-17 Wojciech Kucharz , Krzysztof Kurdyka

This paper gives various methods for constructing vector bundles over elliptic curves and more generally over families of elliptic curves. We construct universal families over generalized elliptic curves via spectral cover methods and also…

alg-geom · Mathematics 2008-02-03 Robert Friedman , John W. Morgan , Edward Witten

Given a vector bundle $A\to M$ we study the geometry of the graded manifolds $T^*[k]A[1]$, including their canonical symplectic structures, compatible Q-structures and Lagrangian Q-submanifolds. We relate these graded objects to classical…

Symplectic Geometry · Mathematics 2022-10-12 Miquel Cueca

We study the orientability of vector bundles with respect to a family of cohomology theories called $\mathrm{EO}$-theories. The $\mathrm{EO}$-theories are higher height analogues of real $\mathrm{K}$-theory $\mathrm{KO}$. For each…

Algebraic Topology · Mathematics 2021-05-31 Prasit Bhattacharya , Hood Chatham

We propose a version of the Hodge conjecture in Bott-Chern cohomology and using results from characterizing real holomorphic chains by real rectifiable currents to provide a proof for this question. We define a Bott-Chern differential…

Complex Variables · Mathematics 2019-10-07 Jyh-Haur Teh , Chin-Jui Yang

In this note we highlight a common origin for many ubiquitous geometric structures, as well as several new ones by using only the functors of differential calculus in A.M Vinogradov's original sense, adapted to special classes of (graded)…

Differential Geometry · Mathematics 2023-12-11 Jacob Kryczka

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

We study a generalization of chiral symmetry applicable to non-Hermitian systems and its topological consequences on one-dimensional chains. We uncover a rich family of topological phases hosting several chiral flavors characterized not by…

Mesoscale and Nanoscale Physics · Physics 2024-03-28 Alex Westström , Wenbu Duan , Jian Li

It is in general unknown which topological complex vector bundles on a non-algebraic surface admit holomorphic structures. We solve this problem for primary Kodaira surfaces by using results of Kani on curves of genus two with elliptic…

Complex Variables · Mathematics 2013-11-21 Marian Aprodu , Vasile Brinzanescu , Matei Toma

For a long time, band theory of solids has focused on the energy spectrum, or Hamiltonian eigenvalues. Recently, it was realized that the collection of eigenvectors also contains important physical information. The local geometry of…

Mesoscale and Nanoscale Physics · Physics 2023-04-12 A. S. Sergeev

This paper studies the homotopy theory of parameterized spectrum objects in a model category from a global point of view. More precisely, for a model category $\mathcal{M}$ satisfying suitable conditions, we construct a relative model…

Algebraic Topology · Mathematics 2018-02-23 Yonatan Harpaz , Joost Nuiten , Matan Prasma

In this paper, we study cohomology groups of vector bundles on neighborhoods of a non-pluriharmonic locus in Stein manifolds and in projective manifolds. By using our results, we show variants of the Lefschetz hyperplane theorem.

Complex Variables · Mathematics 2020-02-18 Yusaku Tiba

We prove two results about vector bundles on singular algebraic surfaces. First, on proper surfaces there are vector bundles of rank two with arbitrarily large second Chern number and fixed determinant. Second, on separated normal surfaces…

Algebraic Geometry · Mathematics 2007-05-23 Stefan Schroeer , Gabriele Vezzosi

Let $C$ be a curve and $V \to C$ an orthogonal vector bundle of rank $r$. For $r \le 6$, the structure of $V$ can be described using tensor, symmetric and exterior products of bundles of lower rank, essentially due to the existence of…

Algebraic Geometry · Mathematics 2023-09-26 Insong Choe , George H. Hitching

We classify globally generated vector bundles on the projective n-space with first Chern class = 4. This extends previous results for first Chern class at most 3, namely for 2 of Sierra and Ugaglia [J. Pure Appl. Algebra 213 (2009),…

Algebraic Geometry · Mathematics 2016-04-26 Cristian Anghel , Iustin Coanda , Nicolae Manolache

We study moduli stacks of principal $\Bbb C^*$-bundles over nodal complex algebraic curves and determine their rational cohomology algebras in terms of Chern classes.

Algebraic Geometry · Mathematics 2024-05-24 Abel Castorena , Frank Neumann

We define and study a certain category of vector bundles on a p-adic curve to which we can associate in a functorial way finite dimensional p-adic representations of the geometric fundamental group. Among other things we investigate two…

Number Theory · Mathematics 2007-05-23 C. Deninger , A. Werner

We show that every orbispace satisfying certain mild hypotheses has 'enough' vector bundles. It follows that the K-theory of finite rank vector bundles on such orbispaces is a cohomology theory. Global presentation results for smooth…

Algebraic Topology · Mathematics 2023-08-15 John Pardon