Results 31 to 40 of about 1,132 (55)

Extremal, enumerative and probabilistic results on ordered hypergraph matchings

open access: yesForum of Mathematics, Sigma
An ordered r-matching is an r-uniform hypergraph matching equipped with an ordering on its vertices. These objects can be viewed as natural generalisations of r-dimensional orders.
Michael Anastos   +3 more
doaj   +1 more source

Overgroups of the Automorphism Group of the Rado Graph

open access: yes, 2012
We are interested in overgroups of the automorphism group of the Rado graph. One class of such overgroups is completely understood; this is the class of reducts.
Cameron, Peter   +4 more
core   +2 more sources

The rank of random regular digraphs of constant degree

open access: yes, 2018
Let $d$ be a fixed large integer. For any $n$ larger than $d$, let $A_n$ be the adjacency matrix of the random directed $d$-regular graph on $n$ vertices, with the uniform distribution. We show that $A_n$ has rank at least $n-1$ with probability going to
Litvak, Alexander   +4 more
core   +2 more sources

Length spectrum of large genus random metric maps

open access: yesForum of Mathematics, Sigma
We study the length of short cycles on uniformly random metric maps (also known as ribbon graphs) of large genus using a Teichmüller theory approach.
Simon Barazer   +2 more
doaj   +1 more source

Mantel's Theorem for random graphs [PDF]

open access: yes, 2012
For a graph $G$, denote by $t(G)$ (resp. $b(G)$) the maximum size of a triangle-free (resp. bipartite) subgraph of $G$. Of course $t(G) \geq b(G)$ for any $G$, and a classic result of Mantel from 1907 (the first case of Tur\'an's Theorem) says that ...
DeMarco, Bobby, Kahn, Jeff
core  

The probability that a random multigraph is simple

open access: yes, 2006
Consider a random multigraph G* with given vertex degrees d_1,...,d_n, contructed by the configuration model. We show that, asymptotically for a sequence of such multigraphs with the number of edges (d_1+...+d_n)/2 tending to infinity, the probability ...
Janson, Svante
core   +2 more sources

Special issue on statistical analysis of networks: Preface by the guest editors. [PDF]

open access: yesStat Methods Appt, 2021
Schweinberger M, Stingo FC, Vitale MP.
europepmc   +1 more source

Quasirandom Graphs and the Pantograph Equation. [PDF]

open access: yesAm Math Mon, 2021
Shapira A, Tyomkyn M.
europepmc   +1 more source

A note on the component structure in random intersection graphs with tunable clustering

open access: yes, 2007
We study the component structure in random intersection graphs with tunable clustering, and show that the average degree works as a threshold for a phase transition for the size of the largest component.
Lagerås, Andreas Nordvall   +1 more
core   +3 more sources

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