"Source: Text/Geometry/ModAbVar.text";
"Line: 4807";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/ModAbVar.text, line: 4807
// Example: H148E76 ()
print "Example: H148E76";
ei := GetEchoInput();
SetEchoInput(true);
H := Subgroup([HeckeOperator(JZero(33),2)]); H;
A := MatrixAlgebra(H); A;
Dimension(A);
assert $1 eq 2;
Dimension(H);
assert $1 eq 1;
SetEchoInput(ei);
