The Stacks project

Typo in algebraic + blast from the past

Thanks to David Zureick-Brown and Dario Weißmann
https://stacks.math.columbia.edu/tag/0459#comment-26
https://stacks.math.columbia.edu/tag/0459#comment-5939

LaTeX: \Sch

	Introduced a new macro

	\def\Sch{\textit{Sch}}

	and replaced all the occurences of \textit{Sch} with \Sch.

Tags: added new tags

Algebraic stacks: Deligne-Mumford with trivial inertia is a space

	To prove this for a general algebraic stack we will first prove
	a characterization of a DM stack as an algebraic stack whose
	inertia is formally unramified, or equivalently diagonal is
	formally unramified. Before we do this it makes sense to change
	the notion of unramified as suggested by David Rydh (see
	documentation/todo-list).

	We also added the proof of the statement that the property of
	being an algebraic stack is invariant under equivalences.

Algebraic stacks: properties of morphisms representable by spaces

	Finally we have enough material so that our definition of
	algebraic stacks makes sense. Phew!