# edge chromatic number

> graph invariant

**Wikidata**: [Q124464442](https://www.wikidata.org/wiki/Q124464442)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Edge_chromatic_number)  
**Source**: https://4ort.xyz/entity/edge-chromatic-number


## References

1. A note on the line-distinguishing chromatic number and the chromatic index of a graph