Exciting connection

Hello little Programmers, 

I am not a programmer but I just wanted to say that as a 3rd year math major, in my Complex Analysis class we just proved rigorously that 

∑ z_{i  when i goes from 1 to infinity}  = 1/(1-z)

Which you guys "proved" a version of  before with the geometric series proof. Which we actually used in part of this proof.

So this stuff is cool and important and worth knowing.