Recovering a covering of schemes from Galois orbits of power series

  • Paul Helminck (University of Durham)
G3 10 (Lecture hall)


In this talk, I will give a general technique to find poset substructures of schemes using discrete Galois-data associated to coverings. In particular, this gives a fast algorithm to calculate dual intersection complexes of semistable models of varieties, provided a suitable covering is given. I will show how tropical geometry and schön compactifications of branch loci can be used to generate these coverings.

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