1 MatrixXcf A = MatrixXcf::Random(4,4); 2 cout << "Here is a random 4x4 matrix, A:" << endl << A << endl << endl; 3 ComplexSchur<MatrixXcf> schurOfA(A, false); // false means do not compute U 4 cout << "The triangular matrix T is:" << endl << schurOfA.matrixT() << endl; 5