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When identified with sequences of irreducible Hermitian-Einstein connections, sequences of stable holomorphic bundles of fixed topological type and bounded degree on a compact complex surface equipped with a Gauduchon metric are shown to…

alg-geom · Mathematics 2008-02-03 Nicholas P. Buchdahl

We give a canonical description of the formal moduli space of a vector bundle on a variety; as an application, we prove the closedness of certain differential forms on moduli corresponding to the trace form on the endomorphism algebra of…

alg-geom · Mathematics 2008-02-03 Ziv Ran

We study properties of contiguity distance between simplicial maps. In particular, we show that simplicial versions of $LS$-category and topological complexity are particular cases of this more general notion.

Algebraic Topology · Mathematics 2020-12-22 Ayse Borat , Mehmetcik Pamuk , Tane Vergili

We conjecture and prove closed-form index expressions for the cohomology dimensions of line bundles on del Pezzo and Hirzebruch surfaces. Further, for all compact toric surfaces we provide a simple algorithm which allows expression of any…

High Energy Physics - Theory · Physics 2020-03-18 Callum R. Brodie , Andrei Constantin , Rehan Deen , Andre Lukas

We define a special network that exhibits the large embeddings in any class of similar algebras. With the aid of this network, we introduce a notion of distance that conceivably counts the minimum number of dissimilarities, in a sense,…

General Mathematics · Mathematics 2021-12-24 Tuğba Aslan , Mohamed Khaled , Gergely Székely

Dihedral codes, particular cases of quasi-cyclic codes, have a nice algebraic structure which allows to store them efficiently. In this paper, we investigate it and prove some lower bounds on their dimension and minimum distance, in analogy…

Information Theory · Computer Science 2020-03-26 Martino Borello , Abdelillah Jamous

Let $P$ be a set of $n$ points in the real plane contained in an algebraic curve $C$ of degree $d$. We prove that the number of distinct distances determined by $P$ is at least $c_d n^{4/3}$, unless $C$ contains a line or a circle. We also…

Metric Geometry · Mathematics 2016-07-20 János Pach , Frank de Zeeuw

We establish tight bi-Lipschitz bounds certifying quasi-universality (universality up to a constant factor) for various distances between Reeb graphs: the interleaving distance, the functional distortion distance, and the functional…

Geometric Topology · Mathematics 2023-09-14 Ulrich Bauer , Håvard Bakke Bjerkevik , Benedikt Fluhr

We introduce a persistence-like pseudo-distance on Tamarkin's category and prove that the distance between an object and its Hamiltonian deformation is at most the Hofer norm of the Hamiltonian function. Using the distance, we show a…

Symplectic Geometry · Mathematics 2020-08-06 Tomohiro Asano , Yuichi Ike

M. Aouchiche and P. Hansen proposed the distance Laplacian and the distance signless Laplacian of a connected graph [Two Laplacians for the distance matrix of a graph, LAA 439 (2013) 21{33]. In this paper, we obtain three theorems on the…

Combinatorics · Mathematics 2013-08-16 Wenxi Hong , Lihua You

We introduce $\varepsilon$-approximate versions of the notion of Euclidean vector bundle for $\varepsilon \geq 0$, which recover the classical notion of Euclidean vector bundle when $\varepsilon = 0$. In particular, we study \v{C}ech…

Algebraic Topology · Mathematics 2024-02-08 Luis Scoccola , Jose A. Perea

We investigate the relative logarithmic connections on a holomorphic vector bundle over a complex analytic family. We give a sufficient condition for the existence of a relative logarithmic connection on a holomorphic vector bundle singular…

Algebraic Geometry · Mathematics 2021-08-16 Snehajit Misra , Anoop Singh

The Polyline Bundle Simplification (PBS) problem is a generalization of the classical polyline simplification problem. Given a set of polylines, which may share line segments and points, PBS asks for the smallest consistent simplification…

Computational Geometry · Computer Science 2021-08-25 Yannick Bosch , Peter Schäfer , Joachim Spoerhase , Sabine Storandt , Johannes Zink

We consider linear slices of the space of Kleinian once-punctured torus groups; a linear slice is obtained by fixing the value of the trace of one of the generators. The linear slice for trace 2 is called the Maskit slice. We will show that…

Geometric Topology · Mathematics 2013-04-01 Kentaro Ito

Lipman et al. [ACM Transactions on Graphics 29 (3) (2010), 1--11] introduced the concept of biharmonic distance to measure the distances between pairs of points on a 3D surface. Biharmonic distance has some advantages over resistance…

Combinatorics · Mathematics 2022-09-08 Yulong Wei , Rong-hua Li , Weihua Yang

Given a triangulation of a closed topological cube, we show that (under some technical condition) there is an essentially unique tiling of a rectangular parallelepiped by cubes, indexed by the vertices of the triangulation. Moreover, i -…

Geometric Topology · Mathematics 2012-08-23 Sa'ar Hersonsky

We show by reduction from the Orthogonal Vectors problem that algorithms with strongly subquadratic running time cannot approximate the Fr\'echet distance between curves better than a factor $3$ unless SETH fails. We show that similar…

Computational Geometry · Computer Science 2018-07-24 Kevin Buchin , Tim Ophelders , Bettina Speckmann

Let $F$ be a number field, $\pi$ either a unitary cuspidal automorphic representation of $\mathrm{GL}(2)/F$ or a unitary Eisenstein series, and $\chi$ a unitary Hecke character of analytic conductor $C(\chi).$ We develop a regularized…

Number Theory · Mathematics 2023-05-19 Liyang Yang

We prove the convergence of the normalized Fubini-Study measures and the logarithms of the Bergman kernels of various Bergman spaces of holomorphic and weakly holomorphic sections associated to a singular Hermitian holomorphic line bundle…

Complex Variables · Mathematics 2020-12-29 Dan Coman , George Marinescu

We investigate infinite distance limits in the complex structure moduli space of F-theory compactified on K3 to eight dimensions. While this is among the simplest possible arenas to test ideas about the Swampland Distance Conjecture, it is…

High Energy Physics - Theory · Physics 2022-06-29 Seung-Joo Lee , Wolfgang Lerche , Timo Weigand
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