# negative index of inertia

> maximal dimension of a subspace where quadratic form is negative-definite

**Wikidata**: [Q91476242](https://www.wikidata.org/wiki/Q91476242)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Negative_index_of_inertia)  
**Source**: https://4ort.xyz/entity/negative-index-of-inertia