5.1.144 sortvec

Syntax:

sortvec ( ideal_expression )
sortvec ( module_expression )

Type:

intvec

Purpose:

computes the permutation v which orders the ideal, resp. module, I by its initial terms, starting with the smallest, that is, I(v[i]) < I(v[i+1]) for all i.

Example:

ring r=0,(x,y,z),dp; ideal I=y,z,x,x3,xz; sortvec(I); ==> 2,1,3,5,4