Timeline for Not especially famous, long-open problems which anyone can understand
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 20, 2021 at 8:52 | comment | added | Salvo Tringali | The answer to Henriksen's question is yes not only for finite rings (as noted by user111524 in his comment above), but also for right (or left) artinian rings (see mathoverflow.net/a/395778/16537 for further details). | |
| Jun 24, 2020 at 10:20 | comment | added | arsmath | The original of the Henriksen paper is now gone. Here is the Wayback Machine link: web.archive.org/web/20100813070706/https://math.hmc.edu/… As an aside, it's shocking to me how little universities care about preserving the scholarship of their own researchers. | |
| Oct 29, 2017 at 8:42 | comment | added | user111524 | That's a very interesting problem ... note that a finite non-commutative ring with unity has more than one units ( see mathoverflow.net/questions/284684/… ) ; so that only leaves for infinite rings to be considered . | |
| Feb 6, 2017 at 5:05 | comment | added | DavidLHarden | This looks like a fun way to spend some time in $\mathbb{Z}/(2)$-vector spaces... | |
| Jul 23, 2012 at 0:04 | comment | added | David Feldman | Mel, to whom I will be eternally grateful for my low Erdos number and much else, was a master of the uniquely mathematical game of one downsmanship: "You don't if ..., we I don't even know if ...!!! | |
| Jul 22, 2012 at 20:35 | comment | added | David Corwin | I've known ring theory for a while, and it never even occurred to me that that was difficult (let alone possibly true). | |
| Jun 23, 2012 at 18:52 | comment | added | David Feldman | Here is a link to Henriksen's paper related to this question. google.com/… | |
| Jun 23, 2012 at 15:04 | comment | added | Pasha Zusmanovich | That's interesting. Do you have some further pointers? | |
| Jun 23, 2012 at 8:34 | history | answered | David Feldman | CC BY-SA 3.0 |