Algebraic curves

lmat1343  2020-2021  Louvain-la-Neuve

Algebraic curves
Due to the COVID-19 crisis, the information below is subject to change until September 13, in particular that concerning the teaching mode (presential, distance or in a comodal or hybrid format).
5 credits
30.0 h + 15.0 h
Complex analysis LMAT1222.
Language skills: French (written and spoken) at high school level.
Main themes
Elliptic functions of Weierstrass and Jacobi, associated elliptic curves, Abel's theorem, addition theorem, selected applications in geometry, mechanics and number theory.

At the end of this learning unit, the student is able to :


Contribution of the course to learning outcomes in the Bachelor in Mathematics programme. By the end of this activity, students will have made progress in:

- Recognise and undertsand a basic foundation of mathematics. In particular:

-- Choose and use the basic tools of calculation to solve mathematical problems.

-- Recognise the fundamental concepts of important current mathematical theories.

-- Establish the main connections between these theories, analyse them and explain them through the use of examples.

- Identify, by use of the abstract and experimental approach specific to the exact sciences, the unifying features of different situations and experiments in mathematics or in closely related fields.

- Show evidence of abstract thinking and of critical spirit. In particular;

-- Argue within the context of the axiomatic method.

-- Recognise the key arguments and the structure of a proof.

-- Construct and draw a proof independently.

-- Evaluate the rigour of a mathematical or logical argument and identify any possible flaws in it.

- Be clear, precise and rigorous in communicating.

-- Write a mathematical text in French according to the conventions of the discipline.

-- Structure an oral presentation in French, highlight key elements, identify techniques and concepts and adapt the presentation to the listeners¿ level of understanding.


Learning outcomes specific to the course. By the end of this activity, students will be able to:

- Construct holomorphic and meromorphic functions in terms of infinite series or products.

- Apply Abel¿s theorem and the addition theorem of elliptic functions theory in various contexts.

- Solve problems which use elliptic functions and elliptic curves.


The contribution of this Teaching Unit to the development and command of the skills and learning outcomes of the programme(s) can be accessed at the end of this sheet, in the section entitled “Programmes/courses offering this Teaching Unit”.
In 2020-2021, we will study compact Riemann surfaces and their link with algebraic curves. Riemann was the first to understand that algebraic functions like "square root of z" are well defined and meromorphic on a branched covering of the complex plane with a point added at infinity. The concept was clarified only fifty years later by Hermann Weyl who introduced the notion of an abstract variety. We shall study the following topics:
1. Abstract Riemann surfaces.
2. Covering spaces.
3. Construction of the Riemann surface of an algebraic function, determination of the genus.
Teaching methods

Due to the COVID-19 crisis, the information in this section is particularly likely to change until September 13.

Learning activities consist of lectures which aim to introduce fundamental concepts, to explain them by showing examples and by proving theorems, to show their reciprocal connections and their connections with other courses in the programme for the Bachelor in Mathematics. Students are assigned problems at the begining of the semester, that they must solve to prepare themselves for the final written exam.
Evaluation methods

Due to the COVID-19 crisis, the information in this section is particularly likely to change until September 13.

Assessment is based on a written examination relating to theory and on the problems carried out during the term, in equal parts. The examination tests knowledge and understanding of fundamental concepts and results, ability to solve problems and ability to draft the solutions with rigour and clarity.
Online resources
The Moodle website provides a course outline, bibliographical references, as well as the problem sets to be done during the semester.
Teaching materials
  • Otto Forster, Lectures on Riemann surfaces, GTM 81, Springer-Verlag (Chapter 1)
Faculty or entity

Programmes / formations proposant cette unité d'enseignement (UE)

Title of the programme
Additionnal module in Mathematics