Reduced Residue System
Any system of phi(n) integers, where phi(n) is the totient function, representing all the residue classes relatively prime to n is called a reduced residue system (Nagell 1951, p. 71).
See also
Complete Residue System, Residue ClassExplore with Wolfram|Alpha
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References
Nagell, T. "Residue Classes and Residue Systems." §20 in Introduction to Number Theory. New York: Wiley, pp. 69-71, 1951.Referenced on Wolfram|Alpha
Reduced Residue SystemCite this as:
Weisstein, Eric W. "Reduced Residue System." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/ReducedResidueSystem.html