# Canonical extensions and ultraproducts of polarities

> Research article (Algebra Universalis, 2018) · cited 14× · AI/ML

**Wikidata**: [openalex:W2756920211](https://www.wikidata.org/wiki/openalex:W2756920211)  
**Source**: https://4ort.xyz/entity/canonical-extensions-and-ultraproducts-of-polarities