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arXiv · 2109.14499

$2$-distance list $(\Delta+2)$-coloring of planar graphs with girth at least 10

Hoang La·Mickael Montassier
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Abstract

Given a graph $G$ and a list assignment $L(v)$ for each vertex of $v$ of $G$. A proper $L$-list-coloring of $G$ is a function that maps every vertex to a color in $L(v)$ such that no pair of adjacent vertices have the same color. We say that a graph is list $k$-colorable when every vertex $v$ has a list of colors of size at least $k$. A $2$-distance coloring is a coloring where vertices at distance at most 2 cannot share the same color. We prove the existence of a $2$-distance list ($\Delta+2$)-coloring for planar graphs with girth at least $10$ and maximum degree $\Delta\geq 4$.

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Hoang La, Mickael Montassier. 2021-09-29. $2$-distance list $(\Delta+2)$-coloring of planar graphs with girth at least 10. https://arxiv.org/abs/2109.14499

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