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In the paper we consider pseudo bihermitian structures - a pair of complex structures compatible with a pseudo Riemannian metric. As in the positive definite case we establish its relations with generalized (pseudo) Kaehler geometry and…

微分几何 · 数学 2011-04-22 J. Davidov , G. Grantcharov , O. Muskarov , M. Yotov

Minkowski's First Theorem and Dirichlet's Approximation Theorem provide upper bounds on certain minima taken over lattice points contained in domains of Euclidean spaces. We study the distribution of such minima and show, under some…

数论 · 数学 2022-01-14 Michael Björklund , Alexander Gorodnik

We consider the homogenization of a Poisson problem or a Stokes system in a randomly punctured domain with Dirichlet boundary conditions. We assume that the holes are spherical and have random centres and radii. We impose that the average…

偏微分方程分析 · 数学 2021-01-05 Arianna Giunti

We prove that square-tiled surfaces having fixed combinatorics of horizontal cylinder decomposition and tiled with smaller and smaller squares become asymptotically equidistributed in any ambient linear $GL(\mathbb R)$-invariant suborbifold…

几何拓扑 · 数学 2019-03-28 Vincent Delecroix , Elise Goujard , Peter Zograf , Anton Zorich

We establish a general inequality on the Poisson space, yielding an upper bound for the distance in total variation between the law of a regular random variable with values in the integers and a Poisson distribution. Several applications…

概率论 · 数学 2012-04-18 Giovanni Peccati

Given connected graph $H$ which is not a star, we show that the number of copies of $H$ in a dense uniformly random regular graph is asymptotically Gaussian, which was not known even for $H$ being a triangle. This addresses a question of…

组合数学 · 数学 2023-05-09 Ashwin Sah , Mehtaab Sawhney

In this paper we build a link between the Teichmuller theory of hyperbolic Riemann surfaces and isomonodromic deformations of linear systems whose monodromy group is the Fuchsian group associated to the given hyperbolic Riemann surface by…

代数几何 · 数学 2009-11-04 Leonid Chekhov , Marta Mazzocco

Consider the graph induced by $\mathbb{Z}^d$, equipped with uniformly elliptic random conductances. At time $0$, place a Poisson point process of particles on $\mathbb{Z}^d$ and let them perform independent simple random walks. Tessellate…

概率论 · 数学 2019-04-02 Peter Gracar , Alexandre Stauffer

We study discrete $\beta$-ensembles as introduced in [17]. We obtain rigidity estimates on the particle locations, i.e. with high probability, the particles are close to their classical locations with an optimal error estimate. We prove the…

概率论 · 数学 2017-08-04 Alice Guionnet , Jiaoyang Huang

We use the Stein-Chen method to obtain compound Poisson approximations for the distribution of the number of subgraphs in a generalised stochastic block model which are isomorphic to some fixed graph. This model generalises the classical…

概率论 · 数学 2019-04-05 Matthew Coulson , Robert E. Gaunt , Gesine Reinert

In this article, we study random graphs with a given degree sequence $d_1, d_2, \cdots, d_n$ from the configuration model. We show that under mild assumptions of the degree sequence, the spectral distribution of the normalized Laplacian…

概率论 · 数学 2024-12-04 Shuyi Wang , Kevin Li , Jiaoyang Huang

The authors consider the length, $l_N$, of the length of the longest increasing subsequence of a random permutation of $N$ numbers. The main result in this paper is a proof that the distribution function for $l_N$, suitably centered and…

组合数学 · 数学 2007-05-23 Jinho Baik , Percy Deift , Kurt Johansson

We study the dynamics of piecewise conformal maps in the Riemann sphere. The normality and chaotic regions are defined and we state several results and properties of these sets. We show that the stability of these piecewise maps is related…

动力系统 · 数学 2019-01-25 Renato Leriche , Guillermo Sienra

Suppose some random resource (energy, mass or space) $\chi \geq 0$ is to be shared at random between (possibly infinitely many) species (atoms or fragments). Assume ${\Bbb E}\chi =\theta <\infty $ and suppose the amount of the individual…

无序系统与神经网络 · 物理学 2007-05-23 Thierry Huillet

We prove Poisson approximation results for the bottom part of the length spectrum of a random closed hyperbolic surface of large genus. Here, a random hyperbolic surface is a surface picked at random using the Weil-Petersson volume form on…

几何拓扑 · 数学 2021-03-18 Maryam Mirzakhani , Bram Petri

This paper is devoted to a fractional generalization of the Dirichlet distribution. The form of the multivariate distribution is derived assuming that the $n$ partitions of the interval $[0,W_n]$ are independent and identically distributed…

概率论 · 数学 2021-02-17 Elvira Di Nardo , Federico Polito , Enrico Scalas

We consider $N$ circles of equal radii, $r$, having their centers randomly placed within a square domain $\mathcal{D}$ of size $L \times L$ with periodic boundary conditions ($\mathcal{D} \in \mathbb{R}^2$). When two or more circles…

统计力学 · 物理学 2020-03-23 Renat K. Akhunzhanov , Yuri Yu. Tarasevich , Irina V. Vodolazskaya

The aim of the present paper is to study the distributions of the length multiplicities for negatively curved locally symmetric Riemannian manifolds. In Theorem 2.1, we give upper bounds of the length multiplicities and the square sums of…

谱理论 · 数学 2015-02-10 Yasufumi Hashimoto

By the use of Green's second integral identity we determine the field scattered from a two-dimensional randomly rough isotropic or anisotropic Dirichlet or Neumann surface when it is illuminated by a scalar Gaussian beam. The integral…

We study the Poisson bracket invariant, which measures the level of Poisson noncommutativity of a smooth partition of unity, on closed symplectic surfaces. Motivated by a general conjecture of Polterovich and building on preliminary work of…

辛几何 · 数学 2023-07-12 Jordan Payette