D.5.2.39 tdFactor

Usage:

tdFactor(n, a); n integer, a polynomial

Return:

polynomial

Purpose:

computes up to degree n the Todd class
of the line bundle corresponding to the Chern root t

Note:

returns 0 if n is negative

LIB "chern.lib";
// the Todd class up do degree 4
ring r=0,(t), ls;
print( tdFactor(4, t) );