reduced residue system modulo n

reduced residue system modulo n

[ri¦düst ¦res·ə‚dü ¦sis·təm ¦mäj·ə‚lō ′en]
(mathematics)
A set of integers that includes those members of a complete residue system modulo n that are relatively prime to n.
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Let n; d be positive integers, n > 1 and d|n: Then every reduced residue system modulo n can be divided into [phi](n)/[phi](d) reduced residue systems modulo d.
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