Algebraic geometry 48: Newton's rotating ruler
Channel: Richard E Borcherds
Date: 2020-06-20

This lecture is part of an online algebraic geometry course, based on chapter I of "Algebraic geometry" by Hartshorne. It describes how to use Newton's rotating ruler to expand algebraic functions as power series. 
One application is that the field of complex Puiseux series is algebraically closed.