root of unity

== English == === Noun === root of unity (plural roots of unity) (number theory) An element of a given field (especially, a complex number) x such that for some positive integer n, xn = 1. ==== Hypernyms ==== algebraic integer ==== Holonyms ==== circle group Kummer ring ==== Translations ==== === Further reading === Argand system on Wikipedia.Wikipedia Circle group on Wikipedia.Wikipedia Multiplicative group on Wikipedia.Wikipedia