Source: wikibot/precoloring-extension
= Precoloring extension
{wiki=Precoloring_extension}
The Precoloring Extension is a concept in graph theory related to graph coloring problems. It deals with the scenario where certain vertices of a graph are already colored (i.e., assigned a color) before the coloring process begins. This is essential in many applications, including scheduling, map coloring, and frequency assignment, where certain constraints limit how vertices (or regions) can be colored.