<< f v coeff [exponents coefficients] >> poly f,v; list of integers exponents; list of poly coefficients; The primitive coeff returns the array of exponents and the array of coefficients of the polynomial f with respect to the variable v. The primitive coefficients have not yet removed for a compatibility with the old macro packages. Note that the data type of each element of exponents is <Poly>(9) and it may cause a trouble when p>0. cf. dc, (interger) dc C-functions: Kparts2, parts2 Example: [(x,y) ring_of_polynomials [[(x) 1 (y) 1]] weight_vector 0] define_ring (x^2+ x y + x). (x). coeff print ; ===> [ [ 2 , 1 ] , [1 , y+1] ]

Nobuki Takayama 2020-11-24