"Source: Text/Geometry/ModAbVar.text";
"Line: 5990";
"Date: Fri Sep  9 15:10:23 2022";
"Main: Thu May 25 10:02:38 2023";
// original file: Text/Geometry/ModAbVar.text, line: 5990
// Example: H145E88 ()
print "Example: H145E88";
ei := GetEchoInput();
SetEchoInput(true);
J := JZero(33);
D := Decomposition(J); D;
A := D[3];
B := Complement(A);
B;
Decomposition(B);
phi := 2*NaturalMap(JZero(11),JZero(33),1) - 3*NaturalMap(JZero(11),
                       JZero(33),3);
phi;
C,pi := ComplementOfImage(phi);
C;
Decomposition(C);
SetEchoInput(ei);
