Finding the closed form for a double factorial sum
13:03
Finding a closed form for ζ(4)
13:24
An interesting infinite sum
12:59
7 factorials you probably didn't know
32:04
easy derivative but it took me 32 minutes
18:05
But HOW did Euler do it?! A BEAUTIFUL Solution to the FAMOUS Basel Problem!
16:45
an excruciatingly deep dive into the power sum.
14:04
a surprisingly interesting sum -- 2 ways!
12:46