Timeline for Not especially famous, long-open problems which anyone can understand
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 28, 2012 at 20:30 | comment | added | Vladimir Reshetnikov | It was also discussed here: mathoverflow.net/questions/19127/… | |
| Jul 25, 2012 at 13:39 | comment | added | Vladimir Reshetnikov | This problem is given in Klee, Victor; Wagon, Stan (1991), "Problem 10 Does the plane contain a dense rational set?", Old and New Unsolved Problems in Plane Geometry and Number Theory, Dolciani mathematical expositions, 11, Cambridge University Press, pp. 132–135, ISBN 978-0-88385-315-3, and attributed to Ulam and Erdős. | |
| Jul 24, 2012 at 18:08 | history | answered | Vladimir Reshetnikov | CC BY-SA 3.0 |