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5.1.36 finduni

Syntax:

finduni ( ideal_expression )

Type:

ideal

Purpose:

returns an ideal which is contained in the ideal_expression such that the i-th generator is a univariate polynomial in the i-th ring variable.
The polynomials have minimal degree w.r.t. this property.

Note:

The ideal must be zero-dimensional and given as a reduced Groebner basis in the current ring.

Example:
 
  ring  r=0,(x,y,z), dp;
  ideal i=y3+x2,x2y+x2,z4-x2-y;
  option(redSB);  // force computation of reduced basis
  i=std(i);
  ideal k=finduni(i);
  print(k);
→ x4-x2,
→ y4+y3,
→ z12

See option; ring; std; vdim.


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            User manual for Singular version 2-0-4, October 2002, generated by texi2html.