# Dirac measure

> measure that is 1 if and only if a specified element is in the set

**Wikidata**: [Q1227387](https://www.wikidata.org/wiki/Q1227387)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Dirac_measure)  
**Source**: https://4ort.xyz/entity/dirac-measure


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)