D.13.3.16 initialForm

Usage:

initialForm(f,w); f a polynomial, w an integer vector

Assume:

f is a polynomial in Q[x_1,...,x_n] and w=(w_1,...,w_n)

Return:

poly, the initial form of f(x) w.r.t. w

Note:

the initialForm consists of the terms with MAXIMAL weighted order w.r.t. w

LIB "tropical.lib";
ring r=0,(x,y),dp;
poly f=x3+y2-xy+x-1;
intvec w=2,3;
initialForm(f,w);