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The Lov\'asz Local Lemma is a powerful probabilistic technique for proving the existence of combinatorial objects. It is especially useful for colouring graphs and hypergraphs with bounded maximum degree. This paper presents a general…

组合数学 · 数学 2021-04-14 Ian M. Wanless , David R. Wood

The Lov\'{a}sz Local Lemma is a central tool in probabilistic combinatorics, providing a sufficient condition under which a finite collection of undesirable events with limited dependencies can be simultaneously avoided with positive…

组合数学 · 数学 2026-04-30 Igal Sason

We propose a new proof technique that aims to be applied to the same problems as the Lov\'asz Local Lemma or the entropy-compression method. We present this approach in the context of non-repetitive colorings and we use it to improve…

组合数学 · 数学 2020-06-24 Matthieu Rosenfeld

The Lovasz Local Lemma due to Erdos and Lovasz is a powerful tool in proving the existence of rare events. We present an extension of this lemma, which works well when the event to be shown to exist is a conjunction of individual events,…

数据结构与算法 · 计算机科学 2007-05-23 Aravind Srinivasan

Let G be a graph on n vertices with maximum degree D. We use the Lov\'asz local lemma to show the following two results about colourings c of the edges of the complete graph K_n. If for each vertex v of K_n the colouring c assigns each…

组合数学 · 数学 2010-07-23 Julia Böttcher , Yoshiharu Kohayakawa , Aldo Procacci

In this paper we introduce a new approach for approximately counting in bounded degree systems with higher-order constraints. Our main result is an algorithm to approximately count the number of solutions to a CNF formula $\Phi$ when the…

数据结构与算法 · 计算机科学 2017-03-17 Ankur Moitra

Asymptotic separation index is a parameter that measures how easily a Borel graph can be approximated by its subgraphs with finite components. In contrast to the more classical notion of hyperfiniteness, asymptotic separation index is…

逻辑 · 数学 2025-03-10 Anton Bernshteyn , Felix Weilacher

Following the groundbreaking algorithm of Moser and Tardos for the Lovasz Local Lemma (LLL), there has been a plethora of results analyzing local search algorithms for various constraint satisfaction problems. The algorithms considered fall…

离散数学 · 计算机科学 2020-08-20 Dimitris Achlioptas , Fotis Iliopoulos , Alistair Sinclair

The Lov\'{a}sz Local Lemma is a very powerful tool in probabilistic combinatorics, that is often used to prove existence of combinatorial objects satisfying certain constraints. Moser and Tardos have shown that the LLL gives more than just…

组合数学 · 数学 2019-09-13 Anton Bernshteyn

The Local Computation Algorithm (LCA) model is a popular model in the field of sublinear-time algorithms that measures the complexity of an algorithm by the number of probes the algorithm makes in the neighborhood of one node to determine…

数据结构与算法 · 计算机科学 2021-12-06 Sebastian Brandt , Christoph Grunau , Václav Rozhoň

We illustrate the use of probability theory in existential proofs, focusing on the Lov\'asz Local Lemma. This result gives a lower bound for the probability of avoiding a suitable finite collection of events. We describe some applications…

组合数学 · 数学 2019-09-25 Irfan Alam

This paper proves that a wide class of local search algorithms extend as is to the fully dynamic setting with an adaptive adversary, achieving an amortized $\tilde{O}(1)$ number of local-search steps per update. A breakthrough by Moser…

数据结构与算法 · 计算机科学 2026-04-23 Bernhard Haeupler , Slobodan Mitrović , Srikkanth Ramachandran , Wen-Horng Sheu , Robert Tarjan

Given a collection of independent events each of which has strictly positive probability, the probability that all of them occur is also strictly positive. The Lov\'asz local lemma (LLL) asserts that this remains true if the events are not…

概率论 · 数学 2021-11-18 Dimitris Achlioptas , Kostas Zampetakis

The Lov\'asz Local Lemma is a versatile result in probability theory, characterizing circumstances in which a collection of $n$ `bad events', each occurring with probability at most $p$ and dependent on a set of underlying random variables,…

数据结构与算法 · 计算机科学 2025-02-18 Peter Davies-Peck

Moser and Tardos (2010) gave an algorithmic proof of the lopsided Lov\'asz local lemma (LLL) in the variable framework, where each of the undesirable events is assumed to depend on a subset of a collection of independent random variables.…

组合数学 · 数学 2020-06-16 Lefteris Kirousis , John Livieratos , Kostas I. Psaromiligkos

This paper is a study of ``topological'' lower bounds for the chromatic number of a graph. Such a lower bound was first introduced by Lov\'asz in 1978, in his famous proof of the \emph{Kneser conjecture} via Algebraic Topology. This…

组合数学 · 数学 2007-05-23 Jiri Matousek , Günter M. Ziegler

Covering arrays find important application in software and hardware interaction testing. For practical applications it is useful to determine or bound the minimum number of rows, CAN$(t,k,v)$, in a covering array for given values of the…

组合数学 · 数学 2016-03-28 Kaushik Sarkar , Charles J. Colbourn

The Lov\'asz Local Lemma is a classic result in probability theory that is often used to prove the existence of combinatorial objects via the probabilistic method. In its simplest form, it states that if we have $n$ `bad events', each of…

分布式、并行与集群计算 · 计算机科学 2022-10-20 Peter Davies

We derive upper and lower bounds on the degree $d$ for which the Lov\'asz $\vartheta$ function, or equivalently sum-of-squares proofs with degree two, can refute the existence of a $k$-coloring in random regular graphs $G_{n,d}$. We show…

计算复杂性 · 计算机科学 2017-08-29 Jess Banks , Robert Kleinberg , Cristopher Moore

In this paper we investigate the extent to which the Lov\'asz Local Lemma (an important tool in probabilistic combinatorics) can be adapted for the measurable setting. In most applications, the Lov\'asz Local Lemma is used to produce a…

组合数学 · 数学 2019-08-29 Anton Bernshteyn
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