"Source: Text/Geometry/ModAbVar.text";
"Line: 4284";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/ModAbVar.text, line: 4284
// Example: H148E68 ()
print "Example: H148E68";
ei := GetEchoInput();
SetEchoInput(true);
T2 := HeckeOperator(JZero(100),2);
R := Subring(T2); R;
Rank(R);
assert $1 eq 3;
SetEchoInput(ei);
