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D.14.2.10 from_boolean_poly
Procedure from library polybori.lib (see polybori_lib).
- Usage:
- from_boolean_poly(ps[, dir]); ps polynomial, dir integer zero or one
- Return:
- default: polynomial ps in the representation of the boolean ring
- Note:
- via the optional input dir, one can choose the computation method (either
direct[dir==0] or recursive[dir==1]). default: direct
Example:
| | LIB "polybori.lib";
==> // ** args must be 1 in system("install", "bideal", "ideal", bid\
eal2ideal, 4);
ring r=0,(x,y,z),Dp;
def rb=boolean_poly_ring(r);
poly f=x^2+2*y+5*z^4;
bpoly pp=f;
from_boolean_poly(pp);
==> x+z
from_boolean_poly(pp,1);
==> x+z
ring r2=5,(x,y,z),Dp;
def rb2=boolean_poly_ring(r2);
poly f2=x+y+z;
bpoly pp2=f2;
from_boolean_poly(pp);
==> x+z
from_boolean_poly(pp,1);
==> x+z
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See also:
boolean_ideal;
boolean_std.
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