A characterization of finite ĂŠtale morphisms in tensor triangular geometry
Beren Sanders
公開日: 2021/6/26
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).