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We provide involutory symmetric generating sets of finitely generated Coxeter groups, fulfilling a suitable finiteness condition, which in particular is fulfilled in the finite, affine and compact hyperbolic cases.

群论 · 数学 2009-01-20 Ben Fairbairn , Jürgen Müller

Kim defined a very general combinatorial abstraction of the diameter of polytopes called subset partition graphs to study how certain combinatorial properties of such graphs may be achieved in lower bound constructions. Using Lov\'asz'…

组合数学 · 数学 2012-03-08 Nicolai Hähnle

We enumerate the connected graphs that contain a linear number of edges with respect to the number of vertices. So far, only the first term of the asymptotics was known. Using analytic combinatorics, i.e. generating function manipulations,…

组合数学 · 数学 2016-04-26 Elie de Panafieu

We establish a structure theorem for minimizing sequences for the isoperimetric problem on noncompact $\mathsf{RCD}(K,N)$ spaces $(X,\mathsf{d},\mathcal{H}^N)$. Under the sole (necessary) assumption that the measure of unit balls is…

微分几何 · 数学 2022-08-30 Gioacchino Antonelli , Stefano Nardulli , Marco Pozzetta

We determine the asymptotics of the number of independent sets of size $\lfloor \beta 2^{d-1} \rfloor$ in the discrete hypercube $Q_d = \{0,1\}^d$ for any fixed $\beta \in [0,1]$ as $d \to \infty$, extending a result of Galvin for $\beta…

组合数学 · 数学 2022-02-10 Matthew Jenssen , Will Perkins , Aditya Potukuchi

We study sums with multiplicative functions that take values over a non-homogenous Beatty sequence. We then apply our result in a few special cases to obtain asymptotic formulas such as the number of integers in a Beatty sequence…

数论 · 数学 2008-01-21 Ahmet M. Guloglu , C. Wesley Nevans

A method is described to sum multi-dimensional arithmetic functions subject to hyperbolic summation conditions, provided that asymptotic formulae in rectangular boxes are available. In combination with the circle method, the new method is a…

数论 · 数学 2014-02-06 Valentin Blomer , Jörg Brüdern

We show that a wide variety of generalized increasing subsequence problems admit a one parameter family of extensions for which we can exactly compute the mean length of the longest increasing subsequence. By the nature of the extension,…

组合数学 · 数学 2007-05-23 Eric M. Rains

We develop a theory of limits for sequences of dense abstract simplicial complexes, where a sequence is considered convergent if its homomorphism densities converge. The limiting objects are represented by stacks of measurable [0,1]-valued…

组合数学 · 数学 2022-07-19 T. Mitchell Roddenberry , Santiago Segarra

We study integral representations of the Gevrey series solutions of irregular hypergeometric systems. In this paper we consider the case of the systems associated with a one row matrix, for which the integration domains are one dimensional.…

代数几何 · 数学 2013-02-06 F. J. Castro-Jimenez , M. Granger

We show that an entire branched cover of finite distortion cannot have a compact branch set if its distortion satisfies a certain asymptotic growth condition. We furthermore show that this bound is strict by constructing an entire,…

复变函数 · 数学 2018-06-27 Aapo Kauranen , Rami Luisto , Ville Tengvall

We consider the uniform asymptotic expansion for the Gauss hypergeometric function \[{}_2F_1(a+\epsilon\lambda,b;c+\lambda;x),\qquad 0<x<1\] as $\lambda\to+\infty$ in the neigbourhood of $\epsilon x=1$ when the parameter $\epsilon>1$ and…

经典分析与常微分方程 · 数学 2021-04-27 R. B. Paris

The present note considers a certain family of sums indexed by the set of fixed length compositions of a given number. The sums in question cannot be realized as weighted compositions. However they can be be related to the hypergeometric…

组合数学 · 数学 2007-05-23 R. Milson

Much of the progress in the gravitational self-force problem has involved the use of singular perturbation techniques. Yet the formalism underlying these techniques is not widely known. I remedy this situation by explicating the foundations…

广义相对论与量子宇宙学 · 物理学 2015-03-13 Adam Pound

We prove bounds for the number of solutions to $$a_1 + \dots + a_k = a_1' + \dots + a_k'$$ over $N$-element sets of reals, which are sufficiently convex or near-convex. A near-convex set will be the image of a set with small additive…

数论 · 数学 2021-04-26 Peter J. Bradshaw , Brandon Hanson , Misha Rudnev

In this paper we continue our earlier investigations into the asymptotic behaviour of infinite systems of coupled differential equations. Under the mild assumption that the so-called characteristic function of our system is completely…

泛函分析 · 数学 2020-10-01 Lassi Paunonen , David Seifert

We use geometric measure theory to introduce the notion of asymptotic cones associated with a singular subspace of a Riemannian manifold. This extends the classical notion of asymptotic directions usually defined on smooth submanifolds. We…

微分几何 · 数学 2015-01-13 Xiang Sun , Jean-Marie Morvan

We announce two breakthrough results concerning important questions in the Theory of Computational Complexity. In this expository paper, a systematic and comprehensive geometric characterization of the Subset Sum Problem is presented. We…

计算复杂性 · 计算机科学 2025-11-21 Srinivas Balaji Bollepalli

We propose a strategy for approximating Pareto optimal sets based on the global analysis framework proposed by Smale (Dynamical systems, New York, 1973, pp. 531-544). The method highlights and exploits the underlying manifold structure of…

最优化与控制 · 数学 2011-07-18 Alberto Lovison

This document presents a combinatorial framework for analyzing assembly systems using generating functions. We explore the theory through concrete examples, such as linear polymers, and develop recursive equations to characterize valid…

组合数学 · 数学 2025-01-22 Andrés Ortiz-Muñoz