Timeline for What can be said about a group from its presentation?
Current License: CC BY-SA 2.5
17 events
| when toggle format | what | by | license | comment | |
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| Jul 31, 2014 at 18:44 | comment | added | David E Speyer | Also related mathoverflow.net/questions/16565 | |
| Oct 21, 2012 at 6:06 | answer | added | Daniel Moskovich | timeline score: 5 | |
| Feb 7, 2012 at 4:37 | comment | added | Spice the Bird | One fact that I like is that the n dimensional representations of a fp group (wrt some ground field) is scheme. The relations turn into polynomial relations! | |
| S Aug 16, 2010 at 16:13 | vote | accept | Mustafa Gokhan Benli | ||
| Aug 16, 2010 at 16:13 | vote | accept | Mustafa Gokhan Benli | ||
| S Aug 16, 2010 at 16:13 | |||||
| Aug 16, 2010 at 16:13 | vote | accept | Mustafa Gokhan Benli | ||
| Aug 16, 2010 at 16:13 | |||||
| Aug 16, 2010 at 16:13 | vote | accept | Mustafa Gokhan Benli | ||
| Aug 16, 2010 at 16:13 | |||||
| Aug 16, 2010 at 15:02 | answer | added | emperordali | timeline score: 3 | |
| Aug 16, 2010 at 14:46 | answer | added | HJRW | timeline score: 14 | |
| Aug 16, 2010 at 11:50 | answer | added | Max Horn | timeline score: 5 | |
| Jul 15, 2010 at 4:23 | vote | accept | Mustafa Gokhan Benli | ||
| Aug 16, 2010 at 16:13 | |||||
| Jul 12, 2010 at 11:09 | answer | added | ADL | timeline score: 2 | |
| Jul 11, 2010 at 13:14 | comment | added | Jim Humphreys | One cautionary point is that a group with an elaborate presentation might well turn out to be trivial. And this may be extremely difficult to decide. It's a standard issue in combinatorial group theory. | |
| Jul 11, 2010 at 5:46 | history | edited | Mustafa Gokhan Benli | CC BY-SA 2.5 |
deleted 2 characters in body; Post Made Community Wiki
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| Jul 11, 2010 at 4:05 | comment | added | Andy Putman | One remark I should make is that while in general you can't calculate much about a group from its presentation, sometimes you can get lucky. For instance, a theorem of C. Gordon says that you can't calculate H_2 of a group from a presentation, but in the special case of the mapping class group of a surface Pitsch has a beautiful paper doing exactly that. | |
| Jul 11, 2010 at 3:56 | comment | added | Andy Putman | The questions mathoverflow.net/questions/16532 and mathoverflow.net/questions/15957 seem relevant. | |
| Jul 11, 2010 at 3:51 | history | asked | Mustafa Gokhan Benli | CC BY-SA 2.5 |