Prerequisites

  • Linear Algebra
  • Basic Algebra (Group Theory, Rings and Fields.)
  • Basic Point set Topology, including a first introduction to the fundamental group.
  • Familiarity with the notion of a manifold.
  • (Complex) Analysis: holomorphic and meromorphic functions in 1 variable, Cauchy's theorem, residues, Stokes's theorem.

Aim of the course

In this course we study Riemann Surfaces, which are 1-dimensional complex analytic varieties. Riemann Surfaces are very closely related to algebraic curves, but we shall mostly take an analytic approach.

The main goal of the course is to arrive at a good understanding of the geometry of Riemann Surfaces. For this we will have to develop quite a bit of theory. In particular, we will study holomorphic and meromorphic functions, differential forms, divisors, ramification theory and linear systems.

Among the important theorems that we will cover are the Riemann-Roch theorem and the Riemann-Hurwitz formula. These will enable us to study projective embeddings of Riemann Surfaces and maps between them. We will illustrate the theory with many concrete examples.

Lecturers

Ben Moonen (Radboud University)