A Chebotarev-type density theorem for divisors on algebraic varieties

Details A Chebotarev-type density theorem for divisors on algebraic varieties A Chebotarev-type density theorem for divisors on algebraic varieties

2010-06-11

arxiv.org/abs/1006.2340v1

Mathematics

Algebraic Geometry

30 pages

Scientific paper

Let $Z \to X$ be a finite branched Galois cover of normal projective geometrically integral varieties of dimension $d \geq 2$ over a perfect field $k$. For such a cover, we prove a Chebotarev-type density result describing the decomposition behaviour of geometrically integral Cartier divisors. As an application, we classify Galois covers among all finite branched covers of a given normal geometrically integral variety $X$ over $k$ by the decomposition behaviour of points of a fixed codimension $r$ with $0 < r < \dim X$.

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