# total chromatic number

> graph invariant

**Wikidata**: [Q130438340](https://www.wikidata.org/wiki/Q130438340)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Total_chromatic_number)  
**Source**: https://4ort.xyz/entity/total-chromatic-number


## References

1. A criterion for the planarity of the total graph of a graph
2. A Bound on the Total Chromatic Number