Timeline for Infinite groups with a finite class number
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 2, 2012 at 10:50 | vote | accept | Joerg Sixt | ||
| Apr 2, 2012 at 10:48 | vote | accept | Joerg Sixt | ||
| Apr 2, 2012 at 10:50 | |||||
| Mar 29, 2012 at 1:39 | comment | added | user6976 | Finitely presented "monsters" are discussed on pages 3 and 4 here: arxiv.org/pdf/1103.3873.pdf | |
| Mar 29, 2012 at 1:12 | comment | added | Igor Rivin | @Mark: thanks! I think I first saw Denis' examples because such a group (if I remember correctly) would not have any finite-dimensional unitary representations, but I guess it is much easier to not have such representations than to have few conjugacy classes... | |
| Mar 29, 2012 at 0:33 | comment | added | user6976 | @Igor: Osin's group is infinitely presented, which is also true for Ivanov's examples cited above. No finitely presented examples are known and there are no methods which can produce such examples even "theoretically". It is quite possible that there are no finitely presented examples at all. | |
| Mar 28, 2012 at 23:18 | history | answered | Igor Rivin | CC BY-SA 3.0 |