Results 141 to 150 of about 538 (183)

Functional Hypergraphs of Stock Markets. [PDF]

open access: yesEntropy (Basel)
David JJ   +5 more
europepmc   +1 more source

Intersection Multigraphs of Uniform Hypergraphs

Graphs and Combinatorics, 1998
A hypergraph \(H=(V,\{X_i \mid i\in I\})\) is \(k\)-uniform if all hyperedges \(X_i\) have the same cardinality \(k\); it is \(k\)-conformal if there is some graph \(G\) such that \(H\) is isomorphic to the hypergraph of all cliques with \(k\) vertices of \(G\).
Erich Prisner
exaly   +3 more sources

The Uniformity Lemma for hypergraphs

Graphs and Combinatorics, 1992
This is an extension of Szemerédi's theorem called the Uniformity Lemma for Graphs (see \textit{E. Szemerédi} [Problèmes combinatoires et théorie des graphes, Orsay 1976, Colloq. int. CNRS No. 260, 399-401 (1978; Zbl 0413.05055)]) to \(r\)-uniform hypergraphs. Two applications of the result are announced: proof of a conjecture of Erdős concerning Turán-
Peter Frankl, Vojtech Rödl
openaire   +3 more sources

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