Results 1 to 10 of about 1,190 (81)

COVID-19: Analytics of contagion on inhomogeneous random social networks [PDF]

open access: yesInfectious Disease Modelling, 2021
Motivated by the need for robust models of the Covid-19 epidemic that adequately reflect the extreme heterogeneity of humans and society, this paper presents a novel framework that treats a population of N individuals as an inhomogeneous random social ...
T.R. Hurd
doaj   +2 more sources

Covering the Edges of a Random Hypergraph by Cliques

open access: yesDiscussiones Mathematicae Graph Theory, 2022
We determine the order of magnitude of the minimum clique cover of the edges of a binomial, r-uniform, random hypergraph G(r)(n, p), p fixed. In doing so, we combine the ideas from the proofs of the graph case (r = 2) in Frieze and Reed [Covering the ...
Rödl Vojtěch, Ruciński Andrzej
doaj   +1 more source

Asymptotic Behavior of the Edge Metric Dimension of the Random Graph

open access: yesDiscussiones Mathematicae Graph Theory, 2021
Given a simple connected graph G(V,E), the edge metric dimension, denoted edim(G), is the least size of a set S ⊆ V that distinguishes every pair of edges of G, in the sense that the edges have pairwise different tuples of distances to the vertices of S.
Zubrilina Nina
doaj   +1 more source

EMBEDDING SPANNING BOUNDED DEGREE GRAPHS IN RANDOMLY PERTURBED GRAPHS

open access: yesMathematika, Volume 66, Issue 2, Page 422-447, April 2020., 2020
Abstract We study the model Gα∪G(n,p) of randomly perturbed dense graphs, where Gα is any n‐vertex graph with minimum degree at least αn and G(n,p) is the binomial random graph. We introduce a general approach for studying the appearance of spanning subgraphs in this model using absorption.
Julia Böttcher   +3 more
wiley   +1 more source

Finding Hamilton cycles in random intersection graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2018
The construction of the random intersection graph model is based on a random family of sets. Such structures, which are derived from intersections of sets, appear in a natural manner in many applications. In this article we study the problem of finding a
Katarzyna Rybarczyk
doaj   +1 more source

Topology of random $2$-dimensional cubical complexes

open access: yesForum of Mathematics, Sigma, 2021
We study a natural model of a random $2$-dimensional cubical complex which is a subcomplex of an n-dimensional cube, and where every possible square $2$-face is included independently with probability p. Our main result exhibits a sharp threshold $p=1/2$
Matthew Kahle   +2 more
doaj   +1 more source

FORCING QUASIRANDOMNESS WITH TRIANGLES

open access: yesForum of Mathematics, Sigma, 2019
We study forcing pairs for quasirandom graphs. Chung, Graham, and Wilson initiated the study of families ${\mathcal{F}}$ of graphs with the property that if a large graph $G$ has approximately homomorphism density $p^{e(F)}$ for some fixed $p\in (0,1 ...
CHRISTIAN REIHER, MATHIAS SCHACHT
doaj   +1 more source

Persisting randomness in randomly growing discrete structures: graphs and search trees [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2015
The successive discrete structures generated by a sequential algorithm from random input constitute a Markov chain that may exhibit long term dependence on its first few input values.
Rudolf Grübel
doaj   +1 more source

The Largest Component in Critical Random Intersection Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2018
In this paper, through the coupling and martingale method, we prove the order of the largest component in some critical random intersection graphs is n23$n^{{2 \over 3}}$ with high probability and the width of scaling window around the critical ...
Wang Bin, Wang Longmin, Xiang Kainan
doaj   +1 more source

Random subgraphs of certain graph powers

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 32, Issue 5, Page 285-292, 2002., 2002
We determine the limiting probability that a random subgraph of the Cartesian power Kan or of Ka,an is connected.
Lane Clark
wiley   +1 more source

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