a beautiful gamma function identity -- Legendre's duplication formula.
![](https://i.ytimg.com/vi/uwauLZRIlC4/mqdefault.jpg)
20:39
gamma reflection via double and contour integration.
![](https://i.ytimg.com/vi/J-xgaenJZ7o/mqdefault.jpg)
27:42
A Wallis-type product for e.
![](https://i.ytimg.com/vi/Xahu6Uxzn_w/mqdefault.jpg)
19:21
The overpowered Laplace technique for summing series.
![](https://i.ytimg.com/vi/L4Trz6pFut4/mqdefault.jpg)
18:01
Introduction to the Gamma function & the Pi function (extending the factorial!)
![](https://i.ytimg.com/vi/3K1yhI3CMM4/mqdefault.jpg)
18:00
Euler Infinite Product Representation of Gamma Function
![](https://i.ytimg.com/vi/nZUuHN21zH4/mqdefault.jpg)
11:01
The Mystery Behind This Math Miracle
![](https://i.ytimg.com/vi/bWYEOfo0_A4/mqdefault.jpg)
24:21
How to integrate with respect to any function!
![](https://i.ytimg.com/vi/TFe_ncvsw60/mqdefault.jpg)
17:44