# retract

> continuous mapping from a topological space into a subspace that preserves the position of all points in that subspace

**Wikidata**: [Q2141963](https://www.wikidata.org/wiki/Q2141963)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Retraction_(topology))  
**Source**: https://4ort.xyz/entity/retract


## References

1. [Source](https://www.cs.vu.nl/~dijkstra/teaching/topologieI/top03d1.pdf)