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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Format: | Journal article |
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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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format | Journal article |
id | oxford-uuid:0cf0bea3-ff4a-4912-b1f5-db2ec930b451 |
institution | University of Oxford |
last_indexed | 2024-03-06T18:41:16Z |
publishDate | 2014 |
publisher | Society for Industrial and Applied Mathematics |
record_format | dspace |
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 |