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arxiv: 2412.13893 · v4 · submitted 2024-12-18 · 🧮 math.CO · cs.DM

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ErdH{o}s--P\'{o}sa property of cycles that are far apart

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classification 🧮 math.CO cs.DM
keywords cyclesverticesdistancemathbbthereapartcontainsdenotes
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We prove that there exist functions $f,g:\mathbb{N}\to\mathbb{N}$ such that for all nonnegative integers $k$ and $d$, for every graph $G$, either $G$ contains $k$ cycles such that vertices of different cycles have distance greater than $d$ in $G$, or there exists a subset $X$ of vertices of $G$ with $|X|\leq f(k)$ such that $G-B_G(X,g(d))$ is a forest, where $B_G(X,r)$ denotes the set of vertices of $G$ having distance at most $r$ from a vertex of $X$.

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