"Source: Text/Basics/RngIntRes.text";
"Line: 971";
"Date: Thu Sep 25 14:47:46 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Basics/RngIntRes.text, line: 971
// Example: H20E6 ()
print "Example: H20E6";
ei := GetEchoInput();
SetEchoInput(true);
R := IntegerRing(50);
U, psi := UnitGroup(R);
w := PrimitiveElement(R);
w;
assert $1 eq 3;
Order(w);
assert $1 eq 20;
powers := { w^i : i in [0..19] };
powers;
powers eq { psi(u) : u in U };
assert $1;
SetEchoInput(ei);
