//SINGULAR Example 2.1.10





ring   A=0,(x,y,z),dp;
module M=[xy-1,z2+3,xyz],[y4,x3,z2];
M; 

ideal  I=x2+y2+z2;       
qring  Q=std(I);         //create quotient ring mod I
module M=fetch(A,M);     //map M from A to Q