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Dec 14, 2011 at 21:39 history edited user6976 CC BY-SA 3.0
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Dec 14, 2011 at 10:54 comment added HJRW Mineyev's proof, as distilled by Warren Dicks, is easy enough to be digested in a few minutes. See, for instance, the following slides of a talk by Yago Antolin Pichel: personal.soton.ac.uk/am1t07/ggt/Antolin-talk.pdf .
Dec 14, 2011 at 9:47 history edited user6976 CC BY-SA 3.0
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Dec 14, 2011 at 6:47 history edited user6976 CC BY-SA 3.0
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Dec 14, 2011 at 6:30 comment added Hailong Dao @Andy and Mark: Thank you for sharing the very interesting information.
Dec 14, 2011 at 6:28 comment added user6976 @Hailong: Igor's paper has been accepted in Annals of Math.
Dec 14, 2011 at 6:09 comment added Andy Putman @Hailong : There were mistakes in earlier versions of Friedman's preprints. He has since posted new versions that he claims correct those mistakes. I am not aware of any explicit issues with the new versions, but I do not understand them and am not aware of anyone who is willing to publicly vouch for them. Unlike Mineyev's proof (which ingenuously combines mainstream techniques in geometric group theory, and thus was pretty easy to check), Friedman's work uses a plethora of unfamiliar tools, so it takes a lot longer to sort things out.
Dec 14, 2011 at 5:28 comment added Hailong Dao @Andy: Thank you. I was actually asking about the Friedman's preprints, since they also claimed to prove HNC.
Dec 14, 2011 at 5:10 comment added Andy Putman @Hailong : I can't speak for Mark, but Igor visited me earlier this year and we spent an afternoon picking his proof apart. I emerged completely convinced (and amazed).
Dec 14, 2011 at 3:09 comment added Hailong Dao Just out of curiosity, regarding your entry on Igor Mineyev's work: is this question now settled?
Dec 14, 2011 at 1:56 history edited user6976 CC BY-SA 3.0
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Dec 14, 2011 at 1:39 history answered user6976 CC BY-SA 3.0