Galois Theory and Fundamental Groups --- Alex Perry

I will discuss the analogy between the galois theory of fields and the theory of fundamental groups and covering spaces. The goal is to explain how both theories fit naturally into a framework of categorical galois theory, which gives an equivalence between a category equipped with a "fiber functor" to the category of finite sets equipped with the action of a certain profinite group, called the fundamental group. Finally, I will discuss the fundamental group of a scheme in terms of this machinery. If the scheme is the spectrum of a field we get usual galois theory; if the scheme is a smooth variety over the complex numbers, we get the theory of finite covering spaces.