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The Stacks project

History of tag 042V

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changed the statement 2018-08-03 02f62b8
Typo in stacks

Thanks to Job Rock
https://stacks.math.columbia.edu/tag/042V#comment-3381
changed the statement 2011-08-11 4c15ebf
LaTeX: \Ob

	Introduced a macro

	\def\Ob{\mathop{\rm Ob}\nolimits}

	and replaced any occurence of \text{Ob}( with \Ob(. There are
	still some occurences of \text{Ob} but these are sets, not the
	operator that takes the set of objects of a category.
changed the proof 2011-08-11 aaf93e6
LaTeX: \Mor

	Introduced a macro

	\def\Mor{\mathop{\rm Mor}\nolimits}

	and replaced all the occurences of \text{Mor} with \Mor.
changed the proof 2010-06-27 ab01c68
Typos

	Thanks to Hendrik Verhoek
assigned tag 042V 2010-01-25 cccc58a
Tags: added new tags
changed the proof 2010-01-24 5488a85
Groupoid spaces: More about quotient stacks

	Still need to add a description of [X/G].
created statement with label lemma-presheaf-mor-map-fibred-categories in stacks.tex 2010-01-20 0436365
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.