# Walsh function

> concept in mathematics

**Wikidata**: [Q1934233](https://www.wikidata.org/wiki/Q1934233)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Walsh_function)  
**Source**: https://4ort.xyz/entity/walsh-function


## References

1. Faceted Application of Subject Terminology
2. SUDOC
3. Freebase Data Dumps. 2013
4. Biblioteca Nacional de España
5. National Library of Israel Names and Subjects Authority File
6. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)