Timeline for Sum of First $n$ Squares Equals $\frac{n(n+1)(2n+1)}{6}$
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 21, 2020 at 8:02 | comment | added | Bill Dubuque | Such "proofs by picture" can often be discovered (and proved) by telescopy, e.g. see here. | |
| Oct 28, 2011 at 22:20 | comment | added | Steven Stadnicki | Beautiful extension of the classic Gauss sum proof - I love this one! | |
| Jun 28, 2011 at 5:21 | comment | added | t.b. | In a similar vein are most posts in this MO-thread. Incidentally, another Mike posted Man-Keung Siu's proof there. | |
| Jun 28, 2011 at 5:10 | history | answered | Mike Spivey | CC BY-SA 3.0 |