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D.14.2.4 boolean_poly
Procedure from library polybori.lib (see polybori_lib).
- Usage:
- boolean_poly(ps[, dir, rb]); ps polynomial, dir integer zero or one, rb
boolean ring
- Return:
- default: polynomial ps in the representation of the boolean ring
rb==boolean_poly_ring(basering); optional input: boolean ring rb
- Note:
- via the optional input dir, one can choose the computation method (either
direct[dir==0] or recursive[dir==1]). default: recursive
Example:
| | LIB "polybori.lib";
==> // ** args must be 1 in system("install", "bideal", "ideal", bid\
eal2ideal, 4);
ring r=0,x(1..5),Dp;
poly f=x(2)*(x(3)-x(1))+x(4)*x(5);
bring rb=r;
boolean_poly(f);
==> x(1)*x(2) + x(2)*x(3) + x(4)*x(5)
boolean_poly(f,0);
==> x(1)*x(2) + x(2)*x(3) + x(4)*x(5)
boolean_poly(f,0,boolean_poly_ring(r));
==> x(1)*x(2) + x(2)*x(3) + x(4)*x(5)
boolean_poly(f,0,rb);
==> x(1)*x(2) + x(2)*x(3) + x(4)*x(5)
poly g=0;
boolean_poly(g);
==> 0
poly g=1;
==> // ** redefining g **
boolean_poly(g);
==> 1
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See also:
boolean_ideal;
boolean_std.
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