|  |  D.15.16.5 PPolyQp Procedure from librarygoettsche.lib(see  goettsche_lib).
 
Example:Usage:
PPolyQp(z, r, n); z polynomial, r, n integers
Return:
polynomial in z
Purpose:
computes the Poincare polynomial of the punctual Quot-scheme
of rank r on n planar points
Note:
zero is returned if n<0 or r<=0
 |  | LIB "goettsche.lib";
ring r=0, (z), ls;
// get the Poincare polynomial of the punctual Hilbert scheme (r=1)
// of 3 planar points
print( PPolyQp(z, 1, 3) );
==> 1+z2+z4
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