ChernClassVariable -- the class of all Chern class variables

i1 : F = flagBundle({3,2},VariableNames => {{chern_1 S .. chern_3 S},{chern_1 Q,chern_2 Q}})

o1 = F

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

i2 : A = intersectionRing F

o2 = A

o2 : QuotientRing

i3 : (S,Q) = bundles F

o3 = (S, Q)

o3 : Sequence

i4 : chern Q

o4 = 1 + c Q + c Q
          1     2

o4 : A

i5 : chern S

                     2                  3
o5 = 1 - c Q + ((c Q)  - c Q) + (- (c Q)  + 2*c Q*c Q)
          1       1       2          1         1   2

o5 : A

Functions and methods returning a Chern class variable :

• chern(ZZ,Symbol) -- make a Chern class symbol

Methods that use a Chern class variable :

• ChernClassVariable .. ChernClassVariable -- generate a sequence of Chern class variables
• ChernClassVariable <- Thing -- assignment to a Chern class variable
• Ring _ ChernClassVariable -- get a ring generator corresponding to a Chern class variable
• value(ChernClassVariable) -- the value of a Chern class symbol

For the programmer

The object ChernClassVariable is a type, with ancestor classes BasicList < Thing.