"Source: Text/Group/GrpGPC.text";
"Line: 919";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Group/GrpGPC.text, line: 919
// Example: H81E4 ()
print "Example: H81E4";
ei := GetEchoInput();
SetEchoInput(true);
G<a,b> := DihedralGroup(GrpGPC, 4);
A<u,v> := AbelianGroup([2,2]);
f := hom< G->A | a->u, a*b->v >;
K := Kernel(f);
PCGenerators(K, G);
SetEchoInput(ei);
