7.7.4.0. arrange

Usage:

arrange(p); int p

Return:

ring

Purpose:

set up the polynomial, describing a hyperplane arrangement

Note:

must be executed in a commutative ring

Assume:

basering is present and it is commutative

LIB "dmod.lib";
ring X = 0,(x,y,z,t),dp;
poly q = arrange(3);
factorize(q,1);
==> _[1]=x
==> _[2]=x+z
==> _[3]=y
==> _[4]=y+z
==> _[5]=x+y
==> _[6]=x+y+z
==> _[7]=z