"Source: Text/RepThy/ModAlg.text";
"Line: 6369";
"Date: Fri Sep 26 12:10:12 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/RepThy/ModAlg.text, line: 6369
// Example: H99E46 ()
print "Example: H99E46";
ei := GetEchoInput();
SetEchoInput(true);
A:= MatrixAlgebra(Rationals(), 3);
V:= RModule(Rationals(), 3);                             
m:= map< CartesianProduct(V, A) -> V | t :-> t[1]*t[2] >;
M:=Module(A, m);
N:=DirectSum([ M, M ]);                    
ActionMatrix(N, A.1);
W:= ModuleWithBasis([ M.1+M.2+M.3, M.2+M.3, M.3 ]);
ActionMatrix(W, A.1);
SetEchoInput(ei);
