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D.13.6.26 tInitialFormParMax
Procedure from library tropical.lib (see tropical_lib).
- Usage:
- tInitialFormParMax(f,w); f a polynomial, w an integer vector
- Assume:
- f is a polynomial in Q(t)[x_1,...,x_n] and w=(w_1,...,w_2)
- Return:
- poly, the t-initialform of f(t,x) w.r.t. (-1,w) evaluated at t=1
- Note:
- the t-initialform are the terms with MAXIMAL weighted order w.r.t. (1,w)
Example:
| | LIB "tropical.lib";
ring r=(0,t),(x,y),dp;
poly f=t4x2+y2-t2xy+t4x-1/t6;
intvec w=2,3;
tInitialFormParMax(f,w);
==> y2-1
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