Results 1 to 10 of about 1,157 (63)

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

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

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

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

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

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

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

Queues, random graphs and branching processes

open access: yesInternational Journal of Stochastic Analysis, Volume 1, Issue 3, Page 223-243, 1988., 1988
In this paper it is shown that certain basic results of queueing theory can be used successfully in solving various problems of random graphs and branching processes.
Lajos Takács
wiley   +1 more source

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