Let U be the universal family over M=M0,n, let ωU/M be the relative dualizing sheaf, and let σi: M →U be the sections defining the marked points. The divisors ψi are defined by ψi := σi*(ωU/M). We define the class Ψ by Ψ= ψ1 + ... + ψn.
i1 : psiDivisorM0nbar(14) 24 33 40 45 48 49 o1 = --*B + --*B + --*B + --*B + --*B + --*B 13 2 13 3 13 4 13 5 13 6 13 7 o1 : S_14-symmetric divisor on M-0-14-bar |