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1. • CommentRowNumber1.
   • CommentAuthorUrs
   • CommentTimeDec 27th 2014
   • PermaLink
   Author: Urs
   Format: MarkdownItexThe reflection on the $n$Lab of the the topic cluster of tame geometric stacks -- such as effective étale stacks, orbifolds/Deligne-Mumford stacks, their relation to pseudogroups, etc. -- is still somewhat subotpimal. I'll try to be editing a little in this direction. For instance at _[[proper geometric morphism]]_ there was no pointer to what is probably the main and original example, namely properness of diagonals for orbifold/DM-stacks. I have added at least one paragraph with pointers [here](http://ncatlab.org/nlab/show/proper+geometric+morphism#GeometricStacks). But eventually there should be some actual discussion.

   The reflection on the $n$Lab of the the topic cluster of tame geometric stacks – such as effective étale stacks, orbifolds/Deligne-Mumford stacks, their relation to pseudogroups, etc. – is still somewhat subotpimal. I’ll try to be editing a little in this direction.

   For instance at proper geometric morphism there was no pointer to what is probably the main and original example, namely properness of diagonals for orbifold/DM-stacks. I have added at least one paragraph with pointers here. But eventually there should be some actual discussion.

2. • CommentRowNumber2.
   • CommentAuthorUrs
   • CommentTimeDec 27th 2014
   • PermaLink
   Author: Urs
   Format: MarkdownItexadded to _[[effective Lie groupoid]]_ some of the [equivalent characterizations](http://ncatlab.org/nlab/show/effective+Lie+groupoid#EquivalentCharacterizations).

   added to effective Lie groupoid some of the equivalent characterizations.