Timeline for Explanation for gamma function in formula for $n$-ball volume
Current License: CC BY-SA 2.5
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 2, 2016 at 21:01 | comment | added | Noam D. Elkies | Years ago P.X.Gallagher noted the even more memorable form $$ \pi^{n/2} \bigl/ \Pi(n/2) \bigr. $$ where $\Pi(x)$ is Euler's original notation for what we now call $\Gamma(x+1)$. | |
| Nov 2, 2016 at 20:36 | comment | added | user78249 | I really like this one. I've never seen it proved this way, I've only ever seen the $e^{-x^2}$ way and some even more incredible way my linear algebra teacher did using inner product spaces. | |
| Nov 19, 2009 at 21:07 | comment | added | Jakob Katz | That's meant to be $d(x_1,\dots,x_n)d(x_{n+1},x_{n+2})$, of course. | |
| Nov 19, 2009 at 21:05 | history | answered | Jakob Katz | CC BY-SA 2.5 |