Results 121 to 130 of about 8,099 (222)

Threshold hypergraphs

open access: yes, 1985
This paper deals with three generalizations of threshold graphs to hypergraphs proposed by M. Ch. Golumbic. Answering a question of M. Ch. Golumbic we show that these three definitions are not equivalent.
Šiňajová, Edita   +3 more
core   +1 more source

Connected components in networks with higher-order interactions

open access: yesJournal of Physics: Complexity
We address the problem of defining connected components in hypergraphs, which are models for systems with higher-order interactions. For graphs with dyadic interactions, connected components are defined in terms of paths connecting nodes along the graph.
Gyeong-Gyun Ha   +2 more
doaj   +1 more source

Matchings in balanced hypergraphs

open access: yes, 2011
The present work deals with the matching and vertex cover problem in balanced hypergraphs. This class of hypergraphs is, according to the definition by Berge in the 70s, one possible generalization of bipartite graphs.
Scheidweiler, Robert Berthold
core  

Homomorphisms of quantum hypergraphs

open access: yes, 2023
We introduce quantum homomorphisms between quantum hypergraphs through the existence of perfect strategies for quantum non-local games, canonically associated with the quantum hypergraphs.
Todorov, Ivan G., Hoefer, Gage
core  

Colourings of hypergraphs [PDF]

open access: yes, 1976
In Chapter 2, we describe some generalized chromatic numbers of graphs. In Chapter 3, we describe how these may be regarded as chromatic numbers of associated hypergraphs.
Jones, Rhys Price
core  

Random Recursive Hypergraphs

open access: yes, 2023
Random recursive hypergraphs grow by adding, at each step, a vertex and an edge formed by joining the new vertex to a randomly chosen existing edge. The model is parameter-free, and several characteristics of emerging hypergraphs admit neat expressions ...
Krapivsky, P. L.
core  

Hypergraphs Accumulate

open access: yesInternational Mathematics Research Notices
Abstract We showthat for every integer $k\geqslant 3$ the set of Turán densities of $k$-uniform hypergraphs has an accumulation point in $[0,1)$. In particular, $1/2$ is an accumulation point for the set of Turán densities of $3$-uniform hypergraphs.
Conlon, David, Schülke, Bjarne
openaire   +2 more sources

Infinite hypergraphs I. Basic properties

open access: yes, 1991
Basic properties of the category of infinite directed hyperedge-labelled hypergraphs are studied. An algebraic structure is given which enables us to describe such hypergraphs by means of infinite expressions. It is then shown that two expressions define
Bauderon, Michael
core   +1 more source

Entropy-based models to randomise real-world hypergraphs

open access: yesCommunications Physics
Network theory has often disregarded many-body relationships, solely focusing on pairwise interactions: neglecting them, however, can lead to misleading representations of complex systems.
Fabio Saracco   +3 more
doaj   +1 more source

Extending Graph-Based LP Techniques for Enhanced Insights Into Complex Hypergraph Networks

open access: yesIEEE Access
Many real-world problems can be modelled in the form of complex networks. Social networks such as research collaboration networks and facebook, biological neural networks such as human brains, biomedical networks such as drug-target interactions and ...
Y. V. Nandini   +4 more
doaj   +1 more source

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