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D.15.20.6 makeLinks
Procedure from library stanleyreisner.lib (see stanleyreisner_lib).
- Usage:
- makeLinks(I,p,q); I = ideal, p = poly, p=poly.
- Assume:
- I is the ideal generated by the monomials w.r.t. faces.
- Return:
- links of p, graded pieces of first and second order deformation of links on ideal I.
Example:
| | LIB "stanleyreisner.lib";
ring R=0,(x(1..4)),lp;
ideal i=x(1),x(2),x(3),x(4),x(1)*x(4),x(2)*x(4),x(1)*x(3),x(2)*x(3);
LinksDeformation L=makeLinks(i,x(4)^2,x(1)*x(2));
L;
==> The links of x(4)^2 is :
==> _[1]=x(1)
==> _[2]=x(2)
==> The first order deformation of the links is :
==> x(1),x(2) -> 10
==> phi.source -> phi.over / phi.source
==>
==> The second order deformation of the links is :
==> phi.relations -> phi.over/phi.source
==>
==>
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