| #### D.5.17.14 topChernClass Procedure from library `schubert.lib` (see schubert_lib). Usage: topChernClass(S); S sheaf Return: poly Input: S is a sheaf Theory: This is the top Chern class of a sheaf Example:
    LIB "schubert.lib";
    variety G = Grassmannian(2,4);
    def R = G.baseRing;
    setring R;
    sheaf S = makeSheaf(G,quotientBundle);
    sheaf B = S^3;
    topChernClass(B);
    ==> 27*q(2)^2
See also: ChernClass; totalChernClass.

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