Reduced system of residues

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reduced residue system, modulo

A set of numbers from a complete system of residues modulo that are mutually prime with . A reduced residue system modulo consists of numbers, where is Euler's -function (cf. Euler function). One usually takes the numbers mutually prime with in the complete residue system as reduced residue system.

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Reduced system of residues. Encyclopedia of Mathematics. URL:
This article was adapted from an original article by S.A. Stepanov (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article