"Source: Text/Group/GrpCoh.text";
"Line: 942";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Group/GrpCoh.text, line: 942
// Example: H75E13 ()
print "Example: H75E13";
ei := GetEchoInput();
SetEchoInput(true);
G := Alt(7);
M := TrivialModule(G, GF(3));
CM := CohomologyModule(G, M);                                                 
CohomologyGroup(CM, 2);
P := Extension(GrpPerm, CM, [1]);
Degree(P);
  M := TrivialModule(P, GF(2));
  CM := CohomologyModule(P, M);
  CohomologyGroup(CM, 2);
  P := Extension(GrpPerm, CM, [1]);
  Degree(P);
ChiefFactors(P);               
_, PP := MinimalDegreePermutationRepresentation(P);
Degree(PP);
SetEchoInput(ei);
