-- -*- M2-comint -*- hash: 1904715687583529550

i1 : Gc = flagBundle({3,3}, VariableNames => {,c})

o1 = Gc

o1 : a flag bundle with subquotient ranks {2:3}

i2 : (Sc,Qc) = bundles Gc

o2 = (Sc, Qc)

o2 : Sequence

i3 : B = symmetricPower_3 Qc

o3 = B

o3 : an abstract sheaf of rank 10 on Gc

i4 : X = projectiveBundle'(dual B, VariableNames => {,{z}})

o4 = X

o4 : a flag bundle with subquotient ranks {9, 1}

i5 : A = symmetricPower_6 Qc - symmetricPower_3 Qc ** OO(-z)

o5 = A

o5 : an abstract sheaf of rank 18 on X

i6 : integral chern A

o6 = 2734099200

i7 : 
