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Aug 30, 2012 at 12:33 vote accept Dan Petersen
Aug 15, 2012 at 17:25 history edited Dan Petersen CC BY-SA 3.0
added 6 characters in body; edited title
Aug 15, 2012 at 15:12 comment added Fernando Muro Jeff answer below corrects my intuition. I should have thought twice about Q1. Indeed, stacks are designed to make all actions (virtually) free!
Aug 15, 2012 at 14:17 answer added Jeffrey Giansiracusa timeline score: 20
Aug 15, 2012 at 13:01 comment added Fernando Muro I don't think a positive answer to Q1 is reasonable since the analogue for spaces is false.
Aug 15, 2012 at 12:15 comment added naf This is only tangentially relevant, but Teichmueller space is not in fact a complex ball (as is usually defined). It is a complex manifold diffeomorphic to a real ball.
Aug 15, 2012 at 10:47 history asked Dan Petersen CC BY-SA 3.0