- #1
binbagsss
- 1,254
- 11
Homework Statement
I am looking at the wikipedia proof of uniqueness of laurent series:
https://en.wikipedia.org/wiki/Laurent_series
Homework Equations
look above or below
The Attempt at a Solution
I just don't know what the indentity used before the bottom line is, I've never seen it before, would someone kindlly explain this to me or point me to a link?
Many thanks