nLab lisse-étale site



The lisse-étale site of a scheme XX is the category of UXU \to X which are smooth morphisms with coverings defined as in the étale site.

The lisse-étale site is not so well-behaved, but it is used in the study of algebraic stacks in order to have a site with more affine opens, hence better suited for the discussion of quasicoherent sheaves.


Created on September 11, 2014 at 10:37:03. See the history of this page for a list of all contributions to it.