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root of unity (redirected from Cube roots of unity)
root of unity[¦rüt əv ′yü·nəd·ē]
A root of unity in a field F is an element a in F such that a n = 1 for some positive integer n.
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The cube roots of unity
, equally spaced at 120[degrees] intervals around the unit circle centred at the origin, is arguably the best known illustration of this fact.