Source: wikibot/jury-theorem
= Jury theorem
{wiki=Jury_theorem}
Jury's theorem is a result in the field of control theory, specifically regarding the stability of discrete-time systems. It provides a necessary and sufficient condition for the stability of a discrete-time linear system, which is typically represented by a polynomial. In simple terms, Jury's theorem is applied to determine whether all the roots of a characteristic polynomial lie inside the unit circle in the complex plane.