MatrixXd A = MatrixXd::Random(6,6);
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cout << "Here is a random 6x6 matrix, A:" << endl << A << endl << endl;
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RealSchur<MatrixXd> schur(A);
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cout << "The orthogonal matrix U is:" << endl << schur.matrixU() << endl;
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cout << "The quasi-triangular matrix T is:" << endl << schur.matrixT() << endl << endl;
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MatrixXd U = schur.matrixU();
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MatrixXd T = schur.matrixT();
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cout << "U * T * U^T = " << endl << U * T * U.transpose() << endl;
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