Mathematics – Algebraic Geometry
Scientific paper
2009-06-09
Mathematics
Algebraic Geometry
23 pages
Scientific paper
In this paper, we compute the number of covers of curves with given branch behavior in characteristic p for one class of examples with four branch points and degree p. Our techniques involve related computations in the case of three branch points, and allow us to conclude in many cases that for a particular choice of degeneration, all the covers we consider degenerate to separable (admissible) covers. Starting from a good understanding of the complex case, the proof is centered on the theory of stable reduction of Galois covers.
Bouw Irene I.
Osserman Brian
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