Hypergraphs of bounded disjointness

A κ-uniform hypergraph is s-almost intersecting if every edge is disjoint from exactly s other edges. Gerbner et al. [SIAM J. Discrete Math., 26 (2012), pp. 1657 1669] conjectured that for every κ, and s s0(κ), every k-uniform s-almost intersecting hypergraph has at most (s+1)(2k-2 k-1 edges. We pro...

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Main Authors: Scott, A, Wilmer, E
Format: Journal article
Published: Society for Industrial and Applied Mathematics 2014
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author Scott, A
Wilmer, E
author_facet Scott, A
Wilmer, E
author_sort Scott, A
collection OXFORD
description A κ-uniform hypergraph is s-almost intersecting if every edge is disjoint from exactly s other edges. Gerbner et al. [SIAM J. Discrete Math., 26 (2012), pp. 1657 1669] conjectured that for every κ, and s s0(κ), every k-uniform s-almost intersecting hypergraph has at most (s+1)(2k-2 k-1 edges. We prove a strengthened version of this conjecture and determine the extremal graphs. We also give some related results and conjectures.
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spelling oxford-uuid:0cf0bea3-ff4a-4912-b1f5-db2ec930b4512022-03-26T09:37:51ZHypergraphs of bounded disjointnessJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0cf0bea3-ff4a-4912-b1f5-db2ec930b451Symplectic Elements at OxfordSociety for Industrial and Applied Mathematics2014Scott, AWilmer, EA κ-uniform hypergraph is s-almost intersecting if every edge is disjoint from exactly s other edges. Gerbner et al. [SIAM J. Discrete Math., 26 (2012), pp. 1657 1669] conjectured that for every κ, and s s0(κ), every k-uniform s-almost intersecting hypergraph has at most (s+1)(2k-2 k-1 edges. We prove a strengthened version of this conjecture and determine the extremal graphs. We also give some related results and conjectures.
spellingShingle Scott, A
Wilmer, E
Hypergraphs of bounded disjointness
title Hypergraphs of bounded disjointness
title_full Hypergraphs of bounded disjointness
title_fullStr Hypergraphs of bounded disjointness
title_full_unstemmed Hypergraphs of bounded disjointness
title_short Hypergraphs of bounded disjointness
title_sort hypergraphs of bounded disjointness
work_keys_str_mv AT scotta hypergraphsofboundeddisjointness
AT wilmere hypergraphsofboundeddisjointness