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Apr 12, 2015 at 18:27 review Low quality posts
Apr 12, 2015 at 19:33
Feb 8, 2012 at 15:01 comment added David E Speyer A helpful suggestion about using this site: The pages are organized hierarchically with three levels: Question, Answer and Comment. A change in the whole question being asked belongs up top in the Question. You can edit your question by clicking on the edit link which you should see to the lower left of your question, near the dg.differential-geometry flag.
Feb 8, 2012 at 14:27 history answered marco CC BY-SA 3.0