# Flexibility of planar graphs of girth at least six

**Authors:** Zden\v{e}k Dvo\v{r}\'ak, Tom\'a\v{s} Masa\v{r}\'ik, Jan, Mus\'ilek, Ond\v{r}ej Pangr\'ac

arXiv: 1902.04069 · 2021-02-17

## TL;DR

This paper proves that planar graphs with girth at least six and list sizes of three or more can be colored to respect a constant fraction of vertex preferences, advancing understanding of list coloring flexibility.

## Contribution

It establishes a new lower bound on the fraction of preferences that can be respected in list coloring of planar graphs with girth at least six.

## Key findings

- Existence of an L-coloring respecting a constant fraction of preferences
- Improved bounds for list coloring in planar graphs with girth ≥ 6
- Advancement in understanding coloring flexibility under constraints

## Abstract

Let G be a planar graph with a list assignment L. Suppose a preferred color is given for some of the vertices. We prove that if G has girth at least six and all lists have size at least three, then there exists an L-coloring respecting at least a constant fraction of the preferences.

## Full text

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## References

7 references — full list in the complete paper: https://tomesphere.com/paper/1902.04069/full.md

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Source: https://tomesphere.com/paper/1902.04069