-- -*- M2-comint -*- {* hash: -1859931709 *}

i1 : pt = base(n)

o1 = pt

o1 : an abstract variety of dimension 0

i2 : X = projectiveSpace(4,pt,VariableName => h)

o2 = X

o2 : a flag bundle with ranks {4, 1}

i3 : F = abstractSheaf(X, Rank => 2, ChernClass => 1 + 5*h + 10*h^2)

o3 = F

o3 : an abstract sheaf of rank 2 on X

i4 : chi(F**OO_X(n*h))

      1 4   5 3   125 2   125
o4 = --n  + -n  + ---n  + ---n + 2
     12     3      12      6

o4 : QQ[n]

i5 :