# Closed operators in semi-Hilbertian spaces

> Research article (Linear and Multilinear Algebra, 2021) · cited 10× · AI/ML

**Wikidata**: [openalex:W3168950824](https://www.wikidata.org/wiki/openalex:W3168950824)  
**Source**: https://4ort.xyz/entity/closed-operators-in-semi-hilbertian-spaces