# projection

> idempotent mapping of a set into its subset

**Wikidata**: [Q13415428](https://www.wikidata.org/wiki/Q13415428)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Projection_(mathematics))  
**Source**: https://4ort.xyz/entity/projection-q13415428


## References

1. YSO-Wikidata mapping project