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Tur\'an numbers of theta graphs

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arxiv 1804.10014 v3 pith:T6BLOMVJ submitted 2018-04-26 math.CO

classification math.CO
keywords thetagraphapartconsistscontainingedgesfixedgraphs
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abstract

The theta graph $\Theta_{\ell,t}$ consists of two vertices joined by $t$ vertex-disjoint paths of length $\ell$ each. For fixed odd $\ell$ and large $t$, we show that the largest graph not containing $\Theta_{\ell,t}$ has at most $c_{\ell} t^{1-1/\ell}n^{1+1/\ell}$ edges and that this is tight apart from the value of $c_{\ell}$.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. 3-uniform hypergraphs with few Berge paths of length three between any two vertices

    math.CO 2019-08 conditional novelty 7.0 of 10

    For 3-uniform hypergraphs, the maximum number of edges in an n-vertex hypergraph with no Berge theta made of 217 internally disjoint length-3 paths is Omega(n^{4/3}), matching the upper bound up to a constant.

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