Content deleted Content added
Add detail on semidefinite. Tags: Mobile edit Mobile web edit |
Adding local short description: "Type of homogeneous polynomial of degree 2", overriding Wikidata description "quadratic form that is either greater then 0 except for 0 or less then 0 except for 0" (Shortdesc helper) |
||
Line 1:
{{Short description|Type of homogeneous polynomial of degree 2}}
In [[mathematics]], a '''definite quadratic form''' is a [[quadratic form]] over some [[Real number|real]] [[vector space]] {{math|''V''}} that has the same [[positive and negative numbers|sign]] (always positive or always negative) for every non-zero vector of {{math|''V''}}. According to that sign, the quadratic form is called '''positive-definite''' or '''negative-definite'''.
| |||