chWedge2L(r, c ); r integer, c list of polynomials
Return:
list of polynomials
Purpose:
computes the Chern classes of the second exterior power of a vector bundle
Note:
Implementation of the formula of Lascoux, the Schur polynomials are computed
using the second Jacobi-Trudi formula (in terms of the Chern classes)
Example:
LIB "chern.lib";
ring r=0, (c(1..3)), dp;
list l=c(1..3);
// the Chern classes of the second exterior power of a vector bundle of rank 3
print(chWedge2L(3, l));
==> [1]:
==> 3
==> [2]:
==> [1]:
==> 2*c(1)
==> [2]:
==> c(1)^2+c(2)
==> [3]:
==> c(1)*c(2)-c(3)