Timeline for History of the four-colour problem
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 22, 2012 at 13:41 | comment | added | Shahrooz | I am so happy that, I am in a common place with some best mathematicians. Welcome dear Norman... | |
| Jan 22, 2012 at 9:55 | comment | added | Gordon Royle | Welcome to MathOverflow Norman.... | |
| Jan 22, 2012 at 9:52 | history | answered | Norman Biggs | CC BY-SA 3.0 |