Results 1 to 10 of about 25,758 (195)

Maximizing Spectral Radii of Uniform Hypergraphs with Few Edges

open access: yesDiscussiones Mathematicae Graph Theory, 2016
In this paper we investigate the hypergraphs whose spectral radii attain the maximum among all uniform hypergraphs with given number of edges. In particular we characterize the hypergraph(s) with maximum spectral radius over all unicyclic hypergraphs ...
Fan Yi-Zheng   +3 more
doaj   +2 more sources

Cartesian product of hypergraphs: properties and algorithms [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2009
Cartesian products of graphs have been studied extensively since the 1960s. They make it possible to decrease the algorithmic complexity of problems by using the factorization of the product.
Alain Bretto   +2 more
doaj   +6 more sources

On structures in hypergraphs of models of a theory [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2018
Hypergraphs of models of a theory are derived objects allowing toobtain an essential structural information about both giventheories and related semantic objects including graph ones.
B.Sh. Kulpeshov, S.V. Sudoplatov
doaj   +4 more sources

Complex Neutrosophic Hypergraphs: New Social Network Models

open access: yesAlgorithms, 2019
A complex neutrosophic set is a useful model to handle indeterminate situations with a periodic nature. This is characterized by truth, indeterminacy, and falsity degrees which are the combination of real-valued amplitude terms and complex-valued phase ...
Muhammad Akram, Florentin Smarandache
exaly   +3 more sources

q-Rung Orthopair Fuzzy Hypergraphs with Applications

open access: yesMathematics, 2019
The concept of q-rung orthopair fuzzy sets generalizes the notions of intuitionistic fuzzy sets and Pythagorean fuzzy sets to describe complicated uncertain information more effectively.
Muhammad Akram, Ahmad Alkenani
exaly   +3 more sources

The Wiener index, degree distance index and Gutman index of composite hypergraphs and sunflower hypergraphs

open access: yesHeliyon, 2022
Topological invariants are numerical parameters of graphs or hypergraphs that indicate its topology and are known as graph or hypergraph invariants. In this paper, topological indices of hypergraphs such as Wiener index, degree distance index and Gutman ...
Sakina Ashraf   +3 more
doaj   +1 more source

Hypergraph and Uncertain Hypergraph Representation Learning Theory and Methods

open access: yesMathematics, 2022
With the advent of big data and the information age, the data magnitude of various complex networks is growing rapidly. Many real-life situations cannot be portrayed by ordinary networks, while hypergraphs have the ability to describe and characterize ...
Liyan Zhang   +5 more
doaj   +1 more source

Sharp Bounds on the Spectral Radii of Uniform Hypergraphs concerning Diameter or Clique Number

open access: yesDiscrete Dynamics in Nature and Society, 2021
In this paper, we defined two classes of hypergraphs, hyperbugs and kite hypergraphs. We show that balanced hyperbugs maximize the spectral radii of hypergraphs with fixed number of vertices and diameter and kite hypergraphs minimize the spectral radii ...
Qiannan Niu, Haizhen Ren, Lei Zhang
doaj   +1 more source

On Clustering Detection Based on a Quadratic Program in Hypergraphs

open access: yesJournal of Mathematics, 2022
A proper cluster is usually defined as maximally coherent groups from a set of objects using pairwise or more complicated similarities. In general hypergraphs, clustering problem refers to extraction of subhypergraphs with a higher internal density, for ...
Qingsong Tang
doaj   +1 more source

Link Prediction with Hypergraphs via Network Embedding

open access: yesApplied Sciences, 2022
Network embedding is a promising field and is important for various network analysis tasks, such as link prediction, node classification, community detection and others.
Zijuan Zhao, Kai Yang, Jinli Guo
doaj   +1 more source

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