# Hilbert space

> inner product space that is metrically complete; a Banach space whose norm induces an inner product (follows the parallelogram identity)

**Wikidata**: [Q190056](https://www.wikidata.org/wiki/Q190056)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hilbert_space)  
**Source**: https://4ort.xyz/entity/hilbert-space


## References

1. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=38484)
2. Nuovo soggettario
3. Freebase Data Dumps. 2013
4. [Registros de autoridad de "Materia" de la Biblioteca Nacional de España. Spain open data portal](https://www.bne.es/media/datosgob/catalogo-autoridades/materia/materia-UTF8.zip)
5. Integrated Authority File
6. YSO-Wikidata mapping project
7. BabelNet
8. Quora
9. National Library of Israel
10. KBpedia
11. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)