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In a paper of Tate and the author, we conjectured a uniform bound for the p-adic distance of torsion points on a semiabelian variety, not lying in a subvariety, to that subvariety. We survey the progress made on that conjecture and on…

Number Theory · Mathematics 2025-10-13 José Felipe Voloch

We prove the elementary but surprising fact that the Hofer distance between two closed subsets of a symplectic manifold can be expressed in terms of the restrictions of Hamiltonians to one of the subsets; this helps explain certain…

Symplectic Geometry · Mathematics 2016-08-10 Michael Usher

In this paper, we study reducible surgeries on knots in $S^3$. We develop thickness bounds for L-space knots that admit reducible surgeries, and lower bounds on the slice genus for general knots that admit reducible surgeries. The L-space…

Geometric Topology · Mathematics 2022-09-07 Holt Bodish , Robert DeYeso

The aim of this article is to show that p-adic geometry of modular curves is useful in the study of p-adic properties of traces of singular moduli. In order to do so, we partly answer a question by Ono. As our goal is just to illustrate how…

Number Theory · Mathematics 2007-10-23 Bas Edixhoven

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

We aim to characterise boundedness of commutators $[b,T]$ of singular integrals $T$. Boundedness is studied between weighted Lebesgue spaces $L^p(X)$ and $L^q(X)$, $p\leq q$, when the underlying space $X$ is a space of homogeneous type.…

Classical Analysis and ODEs · Mathematics 2024-06-06 Zhenbing Gong , Ji Li , Jaakko Sinko

We review the well-known slice theorem of Ebin for the action of the diffeomorphism group on the space of Riemannian metrics of a closed manifold. We present advances in the study of the spaces of Riemannian metrics, and produce a more…

Differential Geometry · Mathematics 2023-06-23 Diego Corro , Jan-Bernhard Kordaß

In this paper, we obtain optimal $L^2$ extension of holomorphic sections of a holomorphic vector bundle from subvarieties in weakly pseudoconvex K\"{a}hler manifolds. Moreover, in the case of line bundle the Hermitian metric is allowed to…

Complex Variables · Mathematics 2021-01-20 Xiangyu Zhou , Langfeng Zhu

In this paper we show an explicit relation between chains of torsion classes and weak stability conditions over an abelian category. In particular, up to a natural equivalence, they coincide. We investigate topological properties of the…

Representation Theory · Mathematics 2023-06-16 Aran Tattar , Hipolito Treffinger

We shall study the existence of almost split sequences in tri-exact categories, that is, extension-closed subcategories of triangulated categories. Our results unify and extend the existence theorems for almost split sequences in abelian…

Representation Theory · Mathematics 2020-07-01 Shiping Liu , Hongwei Niu

Simplex slicing (Webb, 1996) is a sharp upper bound on the volume of central hyperplane sections of the regular simplex. We extend this to sharp bounds in the probabilistic framework of negative moments, and beyond, of centred log-concave…

Metric Geometry · Mathematics 2026-03-05 James Melbourne , Michael Roysdon , Colin Tang , Tomasz Tkocz

It is widely believed that point sets in the plane which determine few distinct distances must have some special structure. In particular, such sets are believed to be similar to a lattice. This note considers two different ways to quantify…

Metric Geometry · Mathematics 2016-11-17 Oliver Roche-Newton

We show that a discrete sequence $\Lambda$ of the complex plane is the union of $n$ interpolating sequences for the H\"ormander algebras $A_p$ if and only if the trace of $A_p$ on $\Lambda$ coincides with the space of functions on $\Lambda$…

Complex Variables · Mathematics 2010-04-16 Xavier Massaneda , Joaquim Ortega-Cerdà , Myriam Ounaïes

Discrete vector bundles are important in Physics and recently found remarkable applications in Computer Graphics. This article approaches discrete bundles from the viewpoint of Discrete Differential Geometry, including a complete…

Differential Geometry · Mathematics 2017-01-19 Felix Knöppel , Ulrich Pinkall

In this paper, we study a classical construction of lattices from number fields and obtain a series of new results about their minimum distance and other characteristics by introducing a new measure of algebraic numbers. In particular, we…

Number Theory · Mathematics 2017-03-08 Arturas Dubickas , Min Sha , Igor E. Shparlinski

In this article, for singular hermitian metrics on holomorphic vector bundles, we consider minimal $L^2$ integrals on sublevel sets of plurisubharmonic functions on weakly pseudoconvex K\"ahler manifolds related to modules at boundary…

Complex Variables · Mathematics 2022-06-22 Qi'an Guan , Zhitong Mi , Zheng Yuan

For a certain class of vector bundles E on abelian varieties A over local fields containing all line bundles algebraically equivalent to zero we define a canonical representation of the Tate module of A on the fibre of E in the zero…

Algebraic Geometry · Mathematics 2007-05-23 Christopher Deninger , Annette Werner

We explore algebro-geometric properties of the moduli space of holomorphic Lie algebroid ($ \mathcal{L} $) connections on a compact Riemann surface $X$ of genus $g \,\geq\, 3$. A smooth compactification of the moduli space of…

Algebraic Geometry · Mathematics 2024-04-17 Indranil Biswas , Anoop Singh

Two Delone sets are bounded distance equivalent to each other if there is a bijection between them such that the distance of corresponding points is uniformly bounded. Bounded distance equivalence is an equivalence relation. We show that…

Dynamical Systems · Mathematics 2021-11-09 Dirk Frettlöh , Alexey Garber , Lorenzo Sadun

To a symmetric, relatively ample line bundle on an abelian scheme one can associate a linear combination of the determinant bundle and the relative canonical bundle, which is a torsion element in the Picard group of the base. We improve the…

alg-geom · Mathematics 2008-02-03 Alexander Polishchuk