"Source: Text/RepThy/ModAlg.text";
"Line: 1660";
"Date: Fri Sep 26 12:10:12 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/RepThy/ModAlg.text, line: 1660
// Example: H99E13 ()
print "Example: H99E13";
ei := GetEchoInput();
SetEchoInput(true);
DualModule := function(M)
      G := Group(M);
      f := Representation(M);
      return GModule(G, [ Transpose(f(G.i))^-1 : i in [1 .. Ngens(G)] ]);
end function;
SetEchoInput(ei);
