-------commutative expansion and substitution: (no output) -------Laurent series expansion of Gamma function: (no output) -------determinant of univariate symbolic Vandermonde matrices: (no output) -------determinant of polyvariate symbolic Toeplitz matrices: (no output) -------Lewis-Wester test A (divide factorials) (no output) -------Lewis-Wester test B (sum of rational numbers) (no output) -------Lewis-Wester test C (gcd of big integers) (no output) -------Lewis-Wester test D (normalized sum of rational fcns) (no output) -------Lewis-Wester test E (normalized sum of rational fcns) (no output) -------Lewis-Wester test F (gcd of 2-var polys) (no output) -------Lewis-Wester test G (gcd of 3-var polys) (no output) -------Lewis-Wester test H (det of 80x80 Hilbert) (no output) -------Lewis-Wester test I (invert rank 40 Hilbert) (no output) -------Lewis-Wester test J (check rank 40 Hilbert) (no output) -------Lewis-Wester test K (invert rank 70 Hilbert) (no output) -------Lewis-Wester test L (check rank 70 Hilbert) (no output) -------Lewis-Wester test M1 (26x26 sparse, det) (no output) -------Lewis-Wester test M2 (101x101 sparse, det) (no output) -------Lewis-Wester test N (poly at rational fcns) (no output) -------Lewis-Wester test O1 (three 15x15 dets) (no output) -------Lewis-Wester test P (det of sparse rank 101) (no output) -------Lewis-Wester test P' (det of less sparse rank 101) (no output) -------Lewis-Wester test Q (charpoly(P)) (no output) -------Lewis-Wester test Q' (charpoly(P')) (no output)