# A note on preconditioning for the 3 × 3 block saddle point problem

> Research article (Computers & Mathematics with Applications, 2020) · cited 20× · AI/ML

**Wikidata**: [openalex:W3007227972](https://www.wikidata.org/wiki/openalex:W3007227972)  
**Source**: https://4ort.xyz/entity/a-note-on-preconditioning-for-the-3-3-block-saddle-point-problem