# Hasse–Minkowski theorem

> two quadratic forms over a number field are equivalent iff they are equivalent locally

**Wikidata**: [Q1938251](https://www.wikidata.org/wiki/Q1938251)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hasse–Minkowski_theorem)  
**Source**: https://4ort.xyz/entity/hasse-minkowski-theorem