Exponentially many \(\mathbb{Z}_5\)-colorings in simple planar graphs. (English) Zbl 1467.05078
Summary: Every planar simple graph with \(n\) vertices has at least \(2^{n / 9} \mathbb{Z}_5\)-colorings.
MSC:
| 05C15 | Coloring of graphs and hypergraphs |
| 05C10 | Planar graphs; geometric and topological aspects of graph theory |
References:
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