---
tag: CRD150435P
kind: concept
name: Circular coloring
aliases: [circular-chromatic-number, circular-clique]
sources:
  - wikipedia: en:19448392@r1294068841
    locator: Circular coloring
    note: adopted
    mention: wikipedia://en/19448392
    sections: [Summary]
same_as:
  wikidata: Q5121656
  wikipedia: Circular coloring
inventory: [4NMBBZMVCY]
---

## Summary

In graph theory, **circular coloring** is a kind of coloring that may be viewed as a refinement of the usual [[graph coloring|0NCPXH194Y]]. The *circular chromatic number* of a graph $G$, denoted $\chi_c(G)$ can be given by any of the following definitions, all of which are equivalent (for finite graphs).