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The aim of this work is to establish that two recently published projection theorems, one dealing with a parametric generalization of relative entropy and another dealing with R\'{e}nyi divergence, are equivalent under a correspondence on…

信息论 · 计算机科学 2019-05-07 P. N. Karthik , Rajesh Sundaresan

Network theory has often disregarded many-body relationships, solely focusing on pairwise interactions: neglecting them, however, can lead to misleading representations of complex systems. Hypergraphs represent a suitable framework for…

社会与信息网络 · 计算机科学 2025-07-16 Fabio Saracco , Giovanni Petri , Renaud Lambiotte , Tiziano Squartini

A seminal result of Lee asserts that the Ramsey number of any bipartite $d$-degenerate graph $H$ satisfies $\log r(H) = \log n + O(d)$. In particular, this bound applies to every bipartite graph of maximal degree $\Delta$. It remains a…

组合数学 · 数学 2024-10-28 Dylan J. Altschuler , Han Huang , Konstantin Tikhomirov

Consider the inverse random source scattering problem for the two-dimensional time-harmonic elastic wave equation with an inhomogeneous, anisotropic mass density. The source is modeled as a microlocally isotropic generalized Gaussian random…

偏微分方程分析 · 数学 2018-12-27 Jianliang Li , Peijun Li

In [1] M. Baker and S. Norine developed a theory of divisors and linear systems on graphs, and proved a Riemann-Roch Theorem for these objects (conceived as integer-valued functions on the vertices). In [2] and [3] the authors generalized…

代数几何 · 数学 2017-11-13 Rodney James , Rick Miranda

We study robust versions of properties of $(n,d,\lambda)$-graphs, namely, the property of a random sparsification of an $(n,d,\lambda)$-graph, where each edge is retained with probability $p$ independently. We prove such results for the…

组合数学 · 数学 2025-11-04 Yaobin Chen , Yu Chen , Jie Han , Jingwen Zhao

The paper studies the relationship between diffraction and dynamics for uniformly discrete ergodic point processes in real spaces. This relationship takes the form of an isometric embedding of two L^2 spaces. Diffraction (or equivalently…

动力系统 · 数学 2009-11-13 Xinghua Deng , Robert V. Moody

Entropy numbers and covering numbers of sets and operators are well known geometric notions, which found many applications in various fields of mathematics, statistics, and computer science. Their values for finite-dimensional embeddings…

泛函分析 · 数学 2018-02-05 Marta Kossaczká , Jan Vybíral

An account of 2-factors in graphs and their history is presented. We give a direct graph-theoretic proof of the 2-Factor Theorem and a new variant of it, and also a new complete characterisation of the maximal graphs without 2-factors. This…

组合数学 · 数学 2026-05-08 Jan van den Heuvel , Bjarne Toft

Score-based generative modeling with probability flow ordinary differential equations (ODEs) has achieved remarkable success in a variety of applications. While various fast ODE-based samplers have been proposed in the literature and…

机器学习 · 统计学 2025-08-12 Xuefeng Gao , Lingjiong Zhu

We provide asymptotic formulae for the numbers of bipartite graphs with given degree sequence, and of loopless digraphs with given in- and out-degree sequences, for a wide range of parameters. Our results cover medium range densities and…

组合数学 · 数学 2020-06-30 Anita Liebenau , Nick Wormald

A classical difficult isomorphism testing problem is to test isomorphism of p-groups of class 2 and exponent p in time polynomial in the group order. It is known that this problem can be reduced to solving the alternating matrix space…

数据结构与算法 · 计算机科学 2017-10-03 Yinan Li , Youming Qiao

Ramsey proved that for every positive integer $n$, every sufficiently large graph contains an induced $K_n$ or $\overline{K}_n$. Among the many extensions of Ramsey's Theorem there is an analogue for connected graphs: for every positive…

组合数学 · 数学 2023-06-16 Sarah Allred , Guoli Ding , Bogdan Oporowski

For the p-adic group G=SL (2) , we present results of the computations of the sums of the Bernstein projectors of a given depth. Motivation for the computations is based on a conversation with Roger Howe in August 2013. The computations are…

表示论 · 数学 2015-11-05 Allen Moy

We give the first polynomial-time, differentially node-private, and robust algorithm for estimating the edge density of Erd\H{o}s-R\'enyi random graphs and their generalization, inhomogeneous random graphs. We further prove…

数据结构与算法 · 计算机科学 2024-06-05 Hongjie Chen , Jingqiu Ding , Yiding Hua , David Steurer

Recently, Ma, Shen and Xie broke the Erd\H{o}s barrier for off-diagonal Ramsey numbers $R(\ell,C\ell)$, achieving the first exponential improvement over the classical lower bound for every $C>1$ and sufficiently large $\ell$. Hunter,…

组合数学 · 数学 2026-05-26 Qizhong Lin , Lin Niu

We investigate the level spacing distribution for the quantum spectrum of the square billiard. Extending work of Connors--Keating, and Smilansky, we formulate an analog of the Hardy--Littlewood prime $k$-tuple conjecture for sums of two…

数学物理 · 物理学 2017-01-06 Tristan Freiberg , Pär Kurlberg , Lior Rosenzweig

A recent work of Abbasi et al. [FOCS 2023] introduced the notion of $\varepsilon$-scatter dimension of a metric space and showed a general framework for efficient parameterized approximation schemes (so-called EPASes) for a wide range of…

离散数学 · 计算机科学 2024-10-15 Romain Bourneuf , Marcin Pilipczuk

We investigate a two-parameter entropy introduced by Schw\"{a}mmle and Tsallis and obtain its probability distribution in the canonical ensemble. The probability distribution is given in terms of the Lambert W-function which has been used…

统计力学 · 物理学 2008-09-09 Somayeh Asgarani , Behrouz Mirza

In their seminal paper introducing the theory of random graphs, Erd\H{o}s and R\'{e}nyi considered the evolution of the structure of a random subgraph of $K_n$ as the density increases from $0$ to $1$, identifying two key points in this…

组合数学 · 数学 2026-03-05 Maurício Collares , Joseph Doolittle , Joshua Erde