Factorization

• chol — Cholesky factorization
• fullrf — full rank factorization
• fullrfk — full rank factorization of A^k
• hess — Hessenberg form
• lu — LU factorization with pivoting
• qr — QR decomposition
• rankqr — rank revealing QR factorization
• schur — [ordered] Schur decomposition of matrix and pencils
• sqroot — W*W' hermitian factorization