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math.AG2019★ 1 cited
Un adjoint
Daniel Ferrand
Given a scheme S and a flat morphism T \to S of finite presentation we define a surjective S-morphism to an {é}tale and separated S-scheme, which is universal in an obvious sense.…
math.AG2015★ 3 cited
Recoller pour séparer
Daniel Ferrand, Bruno Kahn
We introduce the notion of a separator for a morphism of schemes f:T\to S; in particular, it is universal among morphisms from T to separated S-schemes. A separator is a local isom…