The set of integers is called the "'least residue system modulo " '.
4.
A reduced residue system modulo 10 could be { 1, 3, 7, 9 }.
5.
Any set of integers, no two of which are congruent modulo, is called a "'complete residue system modulo " '.
6.
Any set of integers selected so that each comes from a different congruence class is called a "'least residue system modulo " '.
7.
It is clear that the least residue system is a complete residue system, and that a complete residue system is simply a set containing precisely one representative of each residue class modulo.
8.
It is clear that the least residue system is a complete residue system, and that a complete residue system is simply a set containing precisely one representative of each residue class modulo.
9.
It is clear that the least residue system is a complete residue system, and that a complete residue system is simply a set containing precisely one representative of each residue class modulo.
10.
A reduced residue system modulo " n " can be formed from a complete residue system modulo " n " by removing all integers not relatively prime to " n ".