In mathematics, a cyclotomic unit (or circular unit) is a unit of an algebraic number field which is the product of numbers of the form (ζan − 1) for ζn an nth root of unity and 0 < a < n. == Properties == The cyclotomic units form a subgroup of finite index in the group of units of a cyclotomic field.
In mathematics, a cyclotomic unit (or circular unit) is a unit of an algebraic number field which is the product of numbers of the form (ζan − 1) for ζn an nth root of unity and 0 < a < n. == Properties == The cyclotomic units form a subgroup of finite index in the group of units of a cyclotomic field.
Source: Wikipedia "Cyclotomic unit" · CC BY-SA 4.0
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