In this way, the map coloring problem becomes a graph coloring problem: Color the vertices so neighbors are different colors. The minimum number of colors is called the chromatic number of the graph.

Ram Murty of Queen’s University in Kingston, Ontario have translated the problem ... have the same color, the coloring is called “proper.” Thus, in the language of graph theory, solving ...

any map can be colored using only four colors so that no two adjacent countries have the same color. The exact sizes and shapes of the countries don’t matter, so mathematicians can translate the ...

In computer science, the graph coloring problem is a classic. Inspired by the map-coloring problem ... at the 2021 Conference on Learning Theory, Moore and his collaborators describe a new ...

Erdős, Faber, and Lovász focused their conversation on hypergraphs, a promising new idea in graph theory at the time ... For instance, edge-coloring problems become harder with hypergraphs.