Singular Manual: initialForm

| #### D.13.4.16 initialForm Procedure from library `tropical.lib` (see tropical_lib). 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 Example:
    LIB "tropical.lib";
    ==> Welcome to polymake version
    ==> Copyright (c) 1997-2015
    ==> Ewgenij Gawrilow, Michael Joswig (TU Darmstadt)
    ==> http://www.polymake.org
    ring r=0,(x,y),dp;
    poly f=x3+y2-xy+x-1;
    intvec w=2,3;
    initialForm(f,w);
    ==> x3+y2

User manual for Singular version 4-1-2p4, 2020, generated by texi2html.