Unfriendly colorings of graphs with finite average degree
arXiv:1903.05268 · doi:10.1112/plms.12345
Abstract
In an unfriendly coloring of a graph the color of every node mismatches that of the majority of its neighbors. We show that every probability measure preserving Borel graph with finite average degree admits a Borel unfriendly coloring almost everywhere. We also show that every bounded degree Borel graph of subexponential growth admits a Borel unfriendly coloring.
6 pages