I have a polynomial p
and some other polynomials p_1,...,p_k
which are elements of a multivariate polynomial ring. Say something like P = PolynomialRing(QQ,'a,b,c,d,e,f,g')
. I know that p
belongs to the ideal generated by p_1,..,p_k
because when I ask for a groebner basis of I
I can see explicitly p
there. How do I find the expression of p
as a linear combination of the p_i
's with coefficients in P
?