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D.4.19.6 intersectMon
Procedure from library monomialideal.lib (see monomialideal_lib).
- Usage:
- intersectMon (I,J); I,J ideals.
- Return:
- an ideal, the intersection of I and J.
(it returns -1 if I or J are not monomial ideals)
- Assume:
- I,J are monomial ideals of the basering.
- Note:
- the minimal monomial generating set is returned.
Example:
| | LIB "monomialideal.lib";
ring R = 0,(w,x,y,z,t),lp;
ideal I = w^3*x*y,w*x*y*z*t,x^2*y^2*z^2,x^2*z^4*t^3,y^3*z;
ideal J = w*x, x^2, y*z*t, y^5*t;
intersectMon (I,J);
==> _[1]=y3zt
==> _[2]=wxyzt
==> _[3]=w3xy
==> _[4]=x2y2z2
==> _[5]=x2z4t3
==> _[6]=x2y3z
==> _[7]=wxy3z
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