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May 4, 2011 at 19:36 vote accept Aaron Mazel-Gee
May 4, 2011 at 19:36 vote accept Aaron Mazel-Gee
May 4, 2011 at 19:36
May 3, 2011 at 8:13 history edited Aaron Mazel-Gee CC BY-SA 3.0
added 143 characters in body; added 7 characters in body
Apr 29, 2011 at 21:46 answer added Joel Fine timeline score: 17
Apr 29, 2011 at 20:51 answer added Francesco Polizzi timeline score: 17
Apr 29, 2011 at 17:05 comment added Dan Ramras Since this is a lifting problem, there are the standard cohomological obstructions (as in Hatcher Section 4.3). But that's not really an answer to the question you asked.
Apr 29, 2011 at 16:55 history edited Aaron Mazel-Gee CC BY-SA 3.0
added 178 characters in body
Apr 29, 2011 at 16:46 history asked Aaron Mazel-Gee CC BY-SA 3.0