On the independence number of sparse graphs

Author: toau

August undefined, 2024

WebAbstract. Given a graph H, the Ramsey number r (H) is the smallest natural number N such that any two-colouring of the edges of K N contains a monochromatic copy of H.The existence of these numbers has been known since 1930 but their quantitative behaviour is still not well understood. Even so, there has been a great deal of recent progress on the … WebLet G = (V, E) be a graph on n vertices with average degree t ≥ 1 in which for every vertex v ϵ V the induced subgraph on the set of all neighbors of v is r-colorable.We show that the independence number of G is at least log t, for some absolute positive constant c.This strengthens a well-known result of Ajtai, Komlós, and Szemerédi [1]. Combining their …

Independence numbers of locally sparse graphs and a Ramsey …

Websparse pseudo-random graphs. It should be stressed that the deﬁnition of pseudo-random graphs used in this study is rather restrictive and applies only to regular graphs. It seems plausible, however, that our techniques can be used to prove Hamiltonicity of almost regular graphs (i.e., graphs in which all degrees are very close to an average ... china body language in business

On the $b$-Independence Number of Sparse Random Graphs

Web18 de set. de 2024 · The independence number of a graph G, denoted by α (G), is the maximum cardinality of an independent set of vertices in G. [Henning and Löwenstein An … Web1 de mai. de 2024 · We prove that every graph G of maximum degree at most 3 satisfies 3 2α(G)+α ' (G)+1 2t(G)≥n(G), where α(G) is the independence number of G,α ' (G) is the … Web23 de dez. de 2024 · Abstract The k-independence number of a graph, αk(G), is the maximum size of a set of vertices at pairwise distance greater than k, or alternatively, the … china body machine slimming

Independent sets - Graph Theory - SageMath

Independence numbers of locally sparse graphs and a Ramsey …

Web1 de jan. de 1983 · Discrete Mathematics 46 (1983) 83-87 83 North,Holland A NOTE ON THE INDEPENDENCE NUMBER OF TRIANGLE-FREE GRAPHS James B. SHEARER Department of Mathematics, Umversity of Califor,zm, Berkeley, CA 94720, USA Received 26 February 1982 Revised 16 August 1982 Let G be a triangle-free graph on n points … WebTheminimum-degree greedy algorithm, or Greedy for short, is a simple and well-studied method for finding independent sets in graphs. We show that it achieves a performance ratio of (Δ+2)/3 for approximating independent sets in graphs with degree bounded by Δ. The analysis yields a precise characterization of the size of the independent sets found … china bodysuit cotton newborn supplierWeb"The Independence Number of Graphs with a Forbidden Cycle and Ramsey Numbers," Journal of Combinatorial Optimization, Springer, vol. 7(4), pages 353-359, December. … graffiti related people

"Webindependence number. Acknowledgments I would like to thank Abhiruk Lahiri and Ben Moore for useful discussions of the subject. ... [14] M. Pilipczuk, S. Siebertz, and S. Toru´nczyk , On the number of types in sparse graphs, in Proceedings of the 33rd Annual ACM/IEEE Symposium on Logic in Computer Science, LICS’18, ACM, 2024, " - On the independence number of sparse graphs

On the independence number of sparse graphs

New Lower Bounds for the Independence Number of Sparse Graphs …

Web1 de out. de 1995 · Lower bounds and approximation algorithms for the independence number α(G) in k-clique-free graphs G are studied and it is shown that there exists an … Web7 de abr. de 2024 · Nowhere dense graph classes, introduced by Nešetřil and Ossona de Mendez [2010, 2011], form a large variety of classes of “sparse graphs” including the class of planar graphs, actually ...

Did you know?

Web23 de fev. de 2011 · Abstract. We obtain new lower bounds for the independence number of K-r-free graphs and linear k-uniform hypergraphs in terms of the degree sequence. … Web1 de out. de 1996 · Let G = (V,E) be a graph on n vertices with average degree t ≥ 1 in which for every vertex v ∈ V the induced subgraph on the set of all neighbors of v is r …

Web1 de mai. de 2004 · in this paper that this is true for the b-independence n umber. Theorem 1 L et b b e a p osit i v e in te ger c onstan t and let ǫ > 0 b e giv en. Assume that d WebCombinatorics, Probability and Computing. Periodical Home; Latest Issue; Archive; Authors; Affiliations; Home; Browse by Title; Periodicals; Combinatorics ...

Web15 de nov. de 1993 · 1. Introduction A set of vertices of a graph is independent if the vertices are pairwise nonadjacent. The independence number of a graph G, a (G), is the cardinality of a largest independent set of G. For graph G= (V, E) and A s:- V we let the subgraph of G induced by A, G I A, be the graph with vertices A and edges being those … WebHowever, computing the independence number of a given graph is well-known to be an NP-hard problem. Our main focus here is thus nding e cient methods to compute (up to vanishing errors) the independence number of large sparse random graphs. Building on recent resultsBermolen et al.(2024a),Brightwell

Web8 de abr. de 2014 · 2 Answers. Generally, it is said that a graph with n vertices is dense if it has Theta ( n ^2) edges and is sparse otherwise. This means that a graph is dense if the average degree of each vertex is lineal, and sparse if sublineal. Sparsity does not deppend on size. For instance, trees are sparse (because a tree with n nodes has n-1 edges).

WebWe obtain new lower bounds for the independence number of K r -free graphs and linear k -uniform hypergraphs in terms of the degree sequence. This answers some old … graffitis bombaWebOur proof technique is an extension of a method of Caro [New Results on the Independence Number, Technical report, Tel Aviv University, 1979] and Wei [A Lower Bound on the Stability Number of a Simple Graph, TM 81-11217-9, Bell Laboratories, Berkley Heights, NJ, 1981], and we also give a new short proof of the main result of Caro … china bodysuit cotton newborn manufacturerWebLet G = (V, E) be a graph on n vertices with average degree t ≥ 1 in which for every vertex v ϵ V the induced subgraph on the set of all neighbors of v is r-colorable.We show that the … graffitis bocetosWebproperties), by low tree-depth colorings [26], by generalized coloring numbers [37], by sparse neighborhood covers [17, 18], by a game called the splitter game [18], and by the … china bodysuit cotton newborn suppliersWeb1 de out. de 1995 · On the independence number of sparse graphs On the independence number of sparse graphs Shearer, James B. 1995-10-01 00:00:00 … graffitis aestheticWeb22 de jul. de 2024 · The paper presents a simple, yet robust computer vision system for robot arm tracking with the use of RGB-D cameras. Tracking means to measure in real time the robot state given by three angles and with known restrictions about the robot geometry. The tracking system consists of two parts: image preprocessing and machine learning. In … graffitis amorWeb22 de jul. de 2024 · The paper presents a simple, yet robust computer vision system for robot arm tracking with the use of RGB-D cameras. Tracking means to measure in real … graffitis car wash rapid city sd