5.1.53 intersect
----------------
Syntax:
intersect ( expression_list of ideal_expression )

intersect ( expression_list of module_expression )
Type:
ideal, resp. module
Purpose:
computes the intersection of ideals, resp. modules.
Note:
If the option returnSB is enabled then the result is a standard basis.
Example:
  ring R=0,(x,y),dp;
  ideal i=x;
  ideal j=y;
  intersect(i,j);
==> _[1]=xy
  ring r=181,(x,y,z),(c,ls);
  ideal id1=maxideal(3);
  ideal id2=x2+xyz,y2-z3y,z3+y5xz;
  ideal id3=intersect(id1,id2,ideal(x,y));
  id3;
==> id3[1]=yz3+xy6z
==> id3[2]=yz4-y2z
==> id3[3]=y2z3-y3
==> id3[4]=xz3+x2y5z
==> id3[5]=xyz2+x2z
==> id3[6]=xyz3-xy2
==> id3[7]=xy2z+x2y
==> id3[8]=x2yz+x3
See
ideal;
module;
option.
<font size="-1">
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; User manual for <a href="http://www.singular.uni-kl.de/"><i>Singular</i></a> version 2-0-4, October 2002,
generated by <a href="http://www.gnu.org/software/texinfo/"><i>texi2html</i></a>.
</font>

</body>
</html>
