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In this paper we consider the complex vector spaces of holomorphic cross-sections of homogeneous holomorphic vector bundles over elliptic adjoint orbits, and provide a sufficient condition for the vector spaces to be finite dimensional in…

Differential Geometry · Mathematics 2019-01-24 Nobutaka Boumuki

We produce infinite families of SKT manifolds by using methods of toric geometry like the $J$-construction. These SKT manifolds are total spaces of certain principal $G$-bundles over smooth projective toric varieties, where $G$ is an even…

Differential Geometry · Mathematics 2020-11-20 Hatice Coban , Cagri Haciyusufoglu , Mainak Poddar

According to Suk's breakthrough result on the Erdos-Szekeres problem, any point set in general position in the plane, which has no $n$ elements that form the vertex set of a convex $n$-gon, has at most $2^{n+O\left({n^{2/3}\log n}\right)}$…

Combinatorics · Mathematics 2020-08-04 Andreas F. Holmsen , Hossein Nassajian Mojarrad , János Pach , Gábor Tardos

Jets constructed via clustering algorithms (e.g., anti-$k_T$, soft-drop) have been proposed for many precision measurements, such as the strong coupling $\alpha_s$ and the nucleon intrinsic dynamics. However, the theoretical accuracy is…

High Energy Physics - Phenomenology · Physics 2022-11-15 Hao-yu Liu , Xiaohui Liu , Sven-Olaf Moch

We classify, up to a natural equivalence relation, vector fields of the plane which belong to the kernel of a 1--form. This form can be closed, in which case the vector fields are integrable, or not, in which case the differential of the…

Dynamical Systems · Mathematics 2024-11-13 Stavros Anastassiou

The present work considers the properties of classes of generally convex sets in the plane known as $1$-semiconvex and weakly $1$-semiconvex. More specifically, the examples of open and closed weakly $1$-semiconvex but non $1$-semiconvex…

Metric Geometry · Mathematics 2020-02-11 T. M. Osipchuk

We show that it is possible to reduce a high-dimensional object like a neural network agent into a low-dimensional vector representation with semantic meaning that we call agent embeddings, akin to word or face embeddings. This can be done…

Machine Learning · Computer Science 2019-03-20 Oscar Chang , Robert Kwiatkowski , Siyuan Chen , Hod Lipson

Topological abstractions offer a method to summarize the behavior of vector fields but computing them robustly can be challenging due to numerical precision issues. One alternative is to represent the vector field using a discrete approach,…

Graphics · Computer Science 2025-12-09 Tanner Finken , Julien Tierny , Joshua A Levine

Let $M$ be a K\"ahler manifold with complex structure $J$ and K\"ahler metric $g$. A c-projective vector field is a vector field on $M$ whose flow sends $J$-planar curves to $J$-planar curves, where $J$-planar curves are analogs of what…

Differential Geometry · Mathematics 2025-05-09 Gianni Manno , Jan Schumm , Andreas Vollmer

Given a set $S$ of $n$ points in $\mathbb{R}^d$, a $k$-set is a subset of $k$ points of $S$ that can be strictly separated by a hyperplane from the remaining $n-k$ points. Similarly, one may consider $k$-facets, which are hyperplanes that…

Metric Geometry · Mathematics 2021-08-17 Brett Leroux , Luis Rademacher

Jet classification is an important ingredient in measurements and searches for new physics at particle coliders, and secondary vertex reconstruction is a key intermediate step in building powerful jet classifiers. We use a neural network to…

High Energy Physics - Experiment · Physics 2021-07-07 Jonathan Shlomi , Sanmay Ganguly , Eilam Gross , Kyle Cranmer , Yaron Lipman , Hadar Serviansky , Haggai Maron , Nimrod Segol

We introduce a new class of algorithms for finding a short vector in lattices defined by codes of co-dimension $k$ over $\mathbb{Z}_P^d$, where $P$ is prime. The co-dimension $1$ case is solved by exploiting the packing properties of the…

Cryptography and Security · Computer Science 2024-01-24 Robert Lin , Peter W. Shor

We prove that if a subset of a $d$-dimensional vector space over a finite field with $q$ elements has more than $q^{d-1}$ elements, then it determines all the possible directions. If a set has more than $q^k$ elements, it determines a…

Classical Analysis and ODEs · Mathematics 2015-07-31 Alex Iosevich , Hannah Morgan , Jonathan Pakianathan

We introduce lexicographic cones, a method of assigning an ordered vector space $\Lex(S)$ to a poset $S$, generalising the standard lexicographic cone. These lexicographic cones are then used to prove that the projective tensor cone of two…

Functional Analysis · Mathematics 2018-12-13 Marten Wortel

A subspace arrangement in a vector space is a finite collection of vector subspaces. Similarly, a configuration of linear spaces in a projective space is a finite collection of linear subspaces. In this paper we study the degree 2 part of…

Algebraic Geometry · Mathematics 2009-10-07 E. Carlini , M. V. Catalisano , A. V. Geramita

We give some new explicit examples of putatively optimal projective spherical designs. i.e., ones for which there is numerical evidence that they are of minimal size. These form continuous families, and so have little apparent symmetry in…

Combinatorics · Mathematics 2025-03-20 Alex Elzenaar , Shayne Waldron

We present a computational method for reconstructing a vector field on a convex polytope $\mathcal{P} \subset \mathbb{R}^d$ of arbitrary dimension from discrete samples. We specifically address the scenario where the vector field is subject…

Dynamical Systems · Mathematics 2026-02-03 Junyan Chu , Shizuo Kaji

Line fields on surfaces are a means to describe the nematic order that may pattern them. The least distorted nematic fields are called uniform, but they can only exist on surfaces with negative constant Gaussian curvature. To identify the…

Soft Condensed Matter · Physics 2025-06-13 Andrea Pedrini , Epifanio G. Virga

We investigate a new family of regions that is the universal generalization of three well-known region families in the field of enumeration of tilings: the quasi-regular hexagons, the semi-hexagons, and the halved hexagons. We prove a…

Combinatorics · Mathematics 2020-06-23 Tri Lai

Jets are an important probe to identify the hard interaction of interest at the LHC. They are routinely used in Standard Model precision measurements as well as in searches for new heavy particles, including jet substructure methods. In…

High Energy Physics - Phenomenology · Physics 2016-08-24 Piotr Pietrulewicz , Frank J. Tackmann , Wouter J. Waalewijn