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• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeJul 16th 2018

I have

• touched the formatting of this ancient entry,

• expanded and streamlined the Idea-section a little,

• added illustrating diagrams for the definition of the sieves appearing in the definition (here) of local epis from a given site

• added the version of the definition for covergages instead of Grothendieck topologies (here, is this in Johnstone?)

• added statement of the proposition that the Cech nerve projection out of a local epi is a local weak equivalence of simplicial presheaves (here)

1. Corrected typo in section 3.1 where seemingly a reference was made to category C instead of S.

Anonymous