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Antipaths in oriented graphs
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math.CO
keywords
antidirectedorientedpathsemidegreeaddario-berryantipathsconditionconfirm
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abstract
We show that for any natural number $k \ge 1$, any oriented graph $D$ of minimum semidegree at least $(3k- 2)/4$ contains an antidirected path of length $k$. In fact, a slightly weaker condition on the semidegree sequence of $D$ suffices, and as a consequence, we confirm a weakened antidirected path version of a conjecture of Addario-Berry, Havet, Linhares Sales, Thomass\'e and Reed.
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