# Dirac delta function

> pseudo-function δ such that an integral of δ(x-c)f(x) always takes the value of f(c)

**Wikidata**: [Q209675](https://www.wikidata.org/wiki/Q209675)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Dirac_delta_function)  
**Source**: https://4ort.xyz/entity/dirac-delta-function


## References

1. Freebase Data Dumps. 2013
2. ISO 80000-2:2019 Quantities and units — Part 2: Mathematics
3. Quora
4. KBpedia
5. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)