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We show that, given an almost-source algebra $A$ of a $p$-block of a finite group $G$, then the unit group of $A$ contains a basis stabilized by the left and right multiplicative action of the defect group if and only if, in a sense to be…

表示论 · 数学 2021-03-04 Laurence Barker , Matthew Gelvin

Let $G$ be a finite permutation group of degree $n$ and let ${\rm ifix}(G)$ be the involution fixity of $G$, which is the maximum number of fixed points of an involution. In this paper we study the involution fixity of almost simple…

群论 · 数学 2021-05-11 Timothy C. Burness , Elisa Covato

This is Part II of our paper in which we prove finite time blowup of the 2D Boussinesq and 3D axisymmetric Euler equations with smooth initial data of finite energy and boundary. In Part I of our paper [ChenHou2023a], we establish an…

偏微分方程分析 · 数学 2024-06-18 Jiajie Chen , Thomas Y. Hou

We revisit the problem of existence of stable systems of contracts with arbitrary sets of contracts. We show that stable sets of contracts exists if choices of agents satisfy path-independence. We call such choice functions Plott functions.…

组合数学 · 数学 2021-08-17 Vladimir I. Danilov , Gleb A. Koshevoy

In this article we establish two fundamental results for the sublevel set persistent homology for stationary processes indexed by the positive integers. The first is a strong law of large numbers for the persistence diagram (treated as a…

概率论 · 数学 2025-08-22 Andrew M. Thomas

The paper investigates the stability properties of restrictions of irreducible representations of the symmetric group to the hyperoctahedral subgroup. A stability result is obtained, analogous to the classical Murnaghan theorem on the…

表示论 · 数学 2026-04-22 Sergey Davydov

We prove homological stability for sequences of "oriented configuration spaces" as the number of points in the configuration goes to infinity. These are spaces of configurations of n points in a connected manifold M of dimension at least 2…

代数拓扑 · 数学 2014-07-18 Martin Palmer

In this paper, we show the stability, and characterize the equality cases in the strong B-inequality of Cordero-Erasquin, Fradelizi and Maurey \cite{B-conj}. As an application, we establish uniqueness of Bobkov's maximal Gaussian measure…

度量几何 · 数学 2023-05-30 Orli Herscovici , Galyna V. Livshyts , Liran Rotem , Alexander Volberg

We consider Boolean functions f:{-1,1}^n->{-1,1} that are close to a sum of independent functions on mutually exclusive subsets of the variables. We prove that any such function is close to just a single function on a single subset. We also…

概率论 · 数学 2015-12-31 Aviad Rubinstein , Muli Safra

We generalize the stable graph regularity lemma of Malliaris and Shelah to the case of finite structures in finite relational languages, e.g., finite hypergraphs. We show that under the model-theoretic assumption of stability, such a…

逻辑 · 数学 2018-01-16 Nathanael Ackerman , Cameron Freer , Rehana Patel

We study the quantitative stability associated with the adjoint Fourier restriction inequality, focusing on the paraboloid and two-dimensional sphere cases. We show that these Strichartz-stability inequalities admit minimizers attaining…

经典分析与常微分方程 · 数学 2026-01-21 Boning Di , Dunyan Yan

We consider statistics on permutations chosen uniformly at random from fixed parabolic double cosets of the symmetric group. We show that the distribution of fixed points is asymptotically Poisson and establish central limit theorems for…

概率论 · 数学 2023-04-20 J. E. Paguyo

We present an abelianization of the permutation action of the symmetric group S_n on R^n in analogy to the Batyrev abelianization construction for finite group actions on complex manifolds. The abelianization is provided by a particular De…

代数几何 · 数学 2007-05-23 Eva Maria Feichtner , Dmitry N. Kozlov

We prove the sharp quantitative stability for a wide class of weighted isoperimetric inequalities. More precisely, we consider isoperimetric inequalities in convex cones with homogeneous weights. Inspired by the proof of such isoperimetric…

偏微分方程分析 · 数学 2020-06-25 Eleonora Cinti , Federico Glaudo , Aldo Pratelli , Xavier Ros-Oton , Joaquim Serra

This work is devoted to almost sure and moment exponential stability of regime-switching jump diffusions. The Lyapunov function method is used to derive sufficient conditions for stabilities for general nonlinear systems; which further…

概率论 · 数学 2017-08-10 Zhen Chao , Kai Wang , Chao Zhu , Yanling Zhu

The Majority is Stablest Theorem has numerous applications in hardness of approximation and social choice theory. We give a new proof of the Majority is Stablest Theorem by induction on the dimension of the discrete cube. Unlike the…

计算复杂性 · 计算机科学 2012-11-07 Anindya De , Elchanan Mossel , Joe Neeman

It is shown that in perfectly quasi-isodynamic stellarators, trapped particles with a bounce frequency much higher than the frequency of the instability are stabilizing in the electrostatic and collisionless limit. The collisionless…

等离子体物理 · 物理学 2015-09-15 J. H. E. Proll , P. Helander , J. W. Connor , G. G. Plunk

The paper is dedicated to studying the problem of Poisson stability (in particular stationarity, periodicity, quasi-periodicity, Bohr almost periodicity, Bohr almost automorphy, Birkhoff recurrence, almost recurrence in the sense of…

动力系统 · 数学 2017-02-10 David Cheban , Zhenxin Liu

In this paper we introduce a new property for normed algebras. This property which we call it stability, plays a key role in the studying of the theory of almost multiplier maps. In this note we study some of the basic properties of this…

泛函分析 · 数学 2015-09-29 E. Ansari Piri , S. Nouri

Topological point defects on orientationally ordered spheres, and on deformable fluid vesicles have been partly motivated by their potential applications in creating super-atoms with directional bonds through functionalization of the…

软凝聚态物质 · 物理学 2020-05-27 C. Saichand , Jaya Kumar Alageshan , Arun Roy , Yashodhan Hatwalne