Intersecting Psi-classes on tropical M_{0,n}

Details Intersecting Psi-classes on tropical M_{0,n} Intersecting Psi-classes on tropical M_{0,n}

2007-09-25

arxiv.org/abs/0709.3953v2

International Mathematics Research Notices (2009) 2009:221-240

Mathematics

Algebraic Geometry

16 pages

Scientific paper

10.1093/imrn/rnn130

We apply the tropical intersection theory developed by L. Allermann and J. Rau to compute intersection products of tropical Psi-classes on the moduli space of rational tropical curves. We show that in the case of zero-dimensional (stable) intersections, the resulting numbers agree with the intersection numbers of Psi-classes on the moduli space of n-marked rational curves computed in algebraic geometry.

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