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We obtain a lower bound on the number of quadratic Dirichlet L-functions over the rational function field which vanish at the central point $s = 1/2$. This is in contrast with the situation over the rational numbers, where a conjecture of…

数论 · 数学 2018-06-29 Wanlin Li

Under the formalism of annealed averaging of the partition function, a type of random multifractal measures with their multipliers satisfying exponentially distributed is investigated in detail. Branching emerges in the curve of generalized…

适应与自组织系统 · 物理学 2009-10-31 Wei-Xing Zhou , Zun-Hong yu

Special relativity theory is well established and confirmed by experiments. This research establishes an operational measurement way to express the great theory in a geometrical form. This may be valuable for understanding the underlying…

综合物理 · 物理学 2007-05-23 Xiao Jianhua

Functional data analysis can be seriously impaired by abnormal observations, which can be classified as either magnitude or shape outliers based on their way of deviating from the bulk of data. Identifying magnitude outliers is relatively…

统计方法学 · 统计学 2020-03-24 Wenlin Dai , Tomas Mrkvicka , Ying Sun , Marc G. Genton

A vast literature over the past fifteen years has been devoted to the study of the geometric properties of Gaussian random waves. In this work, we investigate the geometric behavior of \emph{uniform random waves}, a much less studied…

We investigate in this paper the vanishing at $s=1$ of the twisted $L$-functions of elliptic curves $E$ defined over the rational function field $\mathbb{F}_q(t)$ (where $\mathbb{F}_q$ is a finite field of $q$ elements and characteristic…

数论 · 数学 2022-07-04 Antoine Comeau-Lapointe , Chantal David , Matilde Lalin , Wanlin Li

We show existence of an infinitesimally invariant measure $m$ for a large class of divergence and non-divergence form elliptic second order partial differential operators with locally Sobolev regular diffusion coefficient and drift of some…

概率论 · 数学 2022-01-21 Haesung Lee , Gerald Trutnau

In this note we provide a full conjugacy and subdifferential calculus for convex convex-composite functions in finite-dimensional space. Our approach, based on infimal convolution and cone-convexity, is straightforward and yields the…

最优化与控制 · 数学 2019-08-22 James V. Burke , Tim Hoheisel , Quang V. Nguyen

Spacetimes in general relativity can be uniquely decomposed into a set of multipole moments. Given the usefulness of moments in the categorization of radiation patterns, tidal deformations, and other phenomena associated with compact…

广义相对论与量子宇宙学 · 物理学 2026-01-23 Arthur G. Suvorov , George Pappas

We introduce a curvature function for planar graphs to study the connection between the curvature and the geometric and spectral properties of the graph. We show that non-positive curvature implies that the graph is infinite and locally…

组合数学 · 数学 2011-01-18 Matthias Keller

The Einstein initial-value equations in the extrinsic curvature (Hamiltonian) representation and conformal thin sandwich (Lagrangian) representation are brought into complete conformity by the use of a decomposition of symmetric tensors…

广义相对论与量子宇宙学 · 物理学 2009-11-07 Harald P. Pfeiffer , James W. York

Terahertz computed tomography (THz CT) has drawn significant attention because of its unique capability to bring multi-dimensional object information from invisible to visible. However, current physics-model-based THz CT modalities present…

图像与视频处理 · 电气工程与系统科学 2022-06-14 Yi-Chun Hung , Ta-Hsuan Chao , Pojen Yu , Shang-Hua Yang

Wavelet based algorithms in numerical analysis are similar to other transform methods in that vectors and operators are expanded into a basis and the computations take place in this new system of coordinates. However, due to the recursive…

comp-gas · 物理学 2008-02-03 G. Beylkin

Many computer vision and image processing applications rely on local features. It is well-known that motion blur decreases the performance of traditional feature detectors and descriptors. We propose an inertial-based deblurring method for…

计算机视觉与模式识别 · 计算机科学 2018-05-23 Janne Mustaniemi , Juho Kannala , Simo Särkkä , Jiri Matas , Janne Heikkilä

The direction of outlyingness is crucial to describing the centrality of multivariate functional data. Motivated by this idea, we generalize classical depth to directional outlyingness for functional data. We investigate theoretical…

统计方法学 · 统计学 2018-04-24 Wenlin Dai , Marc G. Genton

By means of several examples, we motivate that universal properties are the simplest way to solve a given mathematical problem, explaining in this way why they appear everywhere in mathematics. In particular, we present the co-universal…

泛函分析 · 数学 2024-04-25 Djamel eddine Kebiche , Paolo Giordano

We introduce a geometric approach to the construction of moment maps in finite and infinite-dimensional complex geometry. We apply this to two settings: K\"ahler manifolds and holomorphic vector bundles. Our new approach exploits the…

微分几何 · 数学 2026-02-05 Ruadhaí Dervan , Michael Hallam

Shape- and scale-selective digital-filters, with steerable finite/infinite impulse responses (FIR/IIRs) and non-recursive/recursive realizations, that are separable in both spatial dimensions and adequately isotropic, are derived. The…

信号处理 · 电气工程与系统科学 2020-08-19 Hugh L. Kennedy

We examine whether the Schwarzschild black hole can emerge as the continuous end state of gravitational collapse from a non-singular configuration. Employing a time dependent extension of the regular Schwarzschild metric, we track the…

广义相对论与量子宇宙学 · 物理学 2026-03-24 Jorge Ovalle , Roberto Casadio , Alexander Kamenshchik

An explicit formula is obtained for the generalized Macdonald functions on the $N$-fold Fock tensor spaces, calculating a certain matrix element of a composition of several screened vertex operators. As an application, we prove the…

量子代数 · 数学 2020-12-02 Masayuki Fukuda , Yusuke Ohkubo , Jun'ichi Shiraishi