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D.5.15.4 ChowRing

Procedure from library schubert.lib (see schubert_lib).

Usage:
ChowRing(V); V variety

Assume:
V is an abstract variety

Return:
qring

Example:
 
LIB "schubert.lib";
ring r = 0,(h,e),wp(1,1);
ideal rels = he,h2+e2;
int d = 2;
variety V = makeVariety(2,rels);
ChowRing(V);
==> // coefficients: QQ
==> // number of vars : 2
==> //        block   1 : ordering dp
==> //                  : names    h e
==> //        block   2 : ordering C
==> // quotient ring from ideal ...