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On the independence number of sparse graphs

Web15 de abr. de 1990 · Discrete Mathematics 81 (1990) 171-175 171 North-Holland ON THE INDEPENDENCE NUMBER OF RANDOM GRAPHS A.M. FRIEZE Department of Mathematics, Carnegie Mellon University, Pittsburgh, USA Received September 1, 1987 Revised June 1, 1988 Let a(GP) denote the independence number of the random … 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 …

A note on the independence number of triangle-free graphs

WebOur 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 … 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 … psychiatric nurse practitioner who jobs https://micavitadevinos.com

On the independence number of random graphs - ScienceDirect

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 ... Web10 de abr. de 2024 · In this section, we consider the ratio-k-cuts of sparse graphs and prove Theorem 2. Note that a set of vertices in a graph G is independent if no two vertices from this set are joined by an edge. The independence number \(\alpha (G)\) is the maximum number of vertices in an independent set of G. Web"The Independence Number of Graphs with a Forbidden Cycle and Ramsey Numbers," Journal of Combinatorial Optimization, Springer, vol. 7(4), pages 353-359, December. … psychiatric nurse practitioner twin cities

The independence number of graphs in terms of degrees

Category:Independent sets - Graph Theory - SageMath

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On the independence number of sparse graphs

New bounds on the independence number of connected graphs

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” … 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 …

On the independence number of sparse graphs

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Web26 de set. de 2012 · As the names indicate sparse graphs are sparsely connected (eg: Trees). Usually the number of edges is in O (n) where n is the number of vertices. Therefore adjacency lists are preferred since they require constant space for every edge. Dense graphs are densely connected. Here number of edges is usually O (n^2). Web1 de out. de 2024 · This paper generalizes and unifies the existing spectral bounds on the k-independence number of a graph, which is the maximum size of a set of vertices at …

WebCombinatorics, Probability and Computing. Periodical Home; Latest Issue; Archive; Authors; Affiliations; Home; Browse by Title; Periodicals; Combinatorics ... Webtitle = "Independence numbers of locally sparse graphs and a Ramsey type problem", abstract = "Let G = (V,E) be a graph on n vertices with average degree t ≥ 1 in …

Web2 Locally sparse graphs Let (G) denote the independence number of G, that is, the maximum number of vertices in an independent set in G. The main step in the proof of Theorem 1.1 is given below. We make no attempt to optimize the multiplicative constant here and in the rest of the paper. 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 …

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

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 … psychiatric nurse practitioners bangor maineWeb9 de mai. de 2024 · Bounded Clique Cover of Some Sparse Graphs. June 2016. ... (On the independence number of a graph in terms of order and size, {\it Discrete Math.} {\bf 232} (2001), 131-138) ... psychiatric nurse practitioner vs therapistWeb1 de nov. de 2014 · Alon N (1996) Independence numbers of locally sparse graphs and a Ramsey type problem. Random Struct. Algorithm 9:271–278. Alon N, Spencer J (1992) The probabilistic method. hoseasons raywellWebIn 1943, Hadwiger conjectured that every graph with no Kt minor is (t−1)-colorable for every t≥1. In the 1980s, Kostochka and Thomason independently p… psychiatric nurse salary illinoisWeb28 de abr. de 2004 · The $b$-independence number $\a_b(G)$ is the size of the largest $b$-independent subset of $G$. When $b=1$ this reduces to the standard definition of independence number. We study this parameter in relation to the random graph … hoseasons ramshorn estate woodland lodgesWeb1 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 hoseasons regent bayWeb8 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). hoseasons red rock