A characterization of finite étale morphisms in tensor triangular geometry
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A characterization of finite étale morphisms in tensor triangular geometry

Published Web Location

https://arxiv.org/abs/2106.14066
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Abstract

We provide a characterization of finite etale morphisms in tensor triangular geometry. They are precisely those functors which have a conservative right adjoint, satisfy Grothendieck--Neeman duality, and for which the relative dualizing object is trivial (via a canonically-defined map).

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