Results 31 to 40 of about 728,495 (209)

A family of $t$-regular ‎self-complementary $k$-hypergraphs [PDF]

open access: yesTransactions on Combinatorics, 2017
We use the recursive method of construction large sets of t-designs given by Qiu-rong Wu (A note on extending t-designs‎, ‎{em Australas‎. ‎J‎. ‎Combin.}‎, ‎{bf 4} (1991) 229--235.), and present a similar method for constructing $t$-subset-regular‎ ‎self-
Masoud Ariannejad   +2 more
doaj   +1 more source

Hypergraph partitioning using tensor eigenvalue decomposition.

open access: yesPLoS ONE, 2023
Hypergraphs have gained increasing attention in the machine learning community lately due to their superiority over graphs in capturing super-dyadic interactions among entities.
Deepak Maurya, Balaraman Ravindran
doaj   +1 more source

Uniform hypergraphs containing no grids [PDF]

open access: yes, 2013
A hypergraph is called an r×r grid if it is isomorphic to a pattern of r horizontal and r vertical lines, i.e.,a family of sets {A1, ..., Ar, B1, ..., Br} such that Ai∩Aj=Bi∩Bj=φ for 1 ...
Füredi, Zoltán, Ruszinkó, Miklós
core   +1 more source

On Laplacian Energy of r-Uniform Hypergraphs

open access: yes, 2023
The matrix representations of hypergraphs have been defined via hypermatrices initially. In recent studies, the Laplacian matrix of hypergraphs, a generalization of the Laplacian matrix, has been introduced.
N. Feyza Yalçın
core   +1 more source

ON THE SPECTRA OF TENSOR JOIN OF HYPERGRAPHS [PDF]

open access: yesJournal of Algebraic Systems
In this paper, we consider certain classes of hypergraphs constructed from the tensor join of hypergraphs, specifically the tensor join of hypergraphs constrained by vertex subsets and the $(H, \mathcal{T}_{\mathcal{S}})$-join of hypergraphs constrained ...
Vishnupriya Ramkumar, Rajkumar Rajendran
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

Spectra of uniform hypergraphs

open access: yesLinear Algebra and its Applications, 2012
We present a spectral theory of hypergraphs that closely parallels Spectral Graph Theory. A number of recent developments building upon classical work has led to a rich understanding of "hyperdeterminants" of hypermatrices, a.k.a. multidimensional arrays.
Cooper, Joshua, Dutle, Aaron
openaire   +3 more sources

Diagonal Forms, Linear Algebraic Methods and Ramsey-Type Problems [PDF]

open access: yes, 2013
This thesis focuses mainly on linear algebraic aspects of combinatorics. Let N_t(H) be an incidence matrix with edges versus all subhypergraphs of a complete hypergraph that are isomorphic to H. Richard M.
Wong, Wing Hong Tony
core   +1 more source

Transversals in regular uniform hypergraphs

open access: yesJournal of Graph Theory, 2023
AbstractThe transversal number of a hypergraph is the minimum number of vertices that intersect every edge of . This notion of transversal is fundamental in hypergraph theory and has been studied a great deal in the literature. A hypergraph is ‐regular if every vertex of has degree , that is, every vertex of belongs to exactly edges. Further, is
Michael A. Henning, Anders Yeo
openaire   +3 more sources

High Girth Hypergraphs with Unavoidable Monochromatic or Rainbow Edges

open access: yesDiscussiones Mathematicae Graph Theory, 2022
A classical result of Erdős and Hajnal claims that for any integers k, r, g ≥ 2 there is an r-uniform hypergraph of girth at least g with chromatic number at least k.
Axenovich Maria, Karrer Annette
doaj   +1 more source

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