root of unity

(redirected from Primitive root of unity)

root of unity

[¦rüt əv ′yü·nəd·ē]
(mathematics)
A root of unity in a field F is an element a in F such that a n = 1 for some positive integer n.
References in periodicals archive ?
Since all the roots of the numerator and the denominator of X(q) are roots of unity, this follows from the fact that for each d-th primitive root of unity [[omega].