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MATH-F419

Algebraic Topology

academic year
2025-2026

Course teacher(s)

Andriy Haydys (Coordinator)

ECTS credits

5

Language(s) of instruction

english

Course content

•    Singular homology, basic definitions and properties.
•    The Hairy ball theorem.
•    Computations of homology groups for specific topological spaces (spheres, graphs, surfaces).
•    CW complexes and cellular homology, equivalence to singular homology.
•    Fundamental group, covering spaces. 
 

Objectives (and/or specific learning outcomes)

The idea is to associate to topological spaces algebraic objects (groups, rings etc). If this is done judiciously, one can hope for example to distinguish non-homeomorphic spaces or essentially different continuous maps (in a suitable sense). This in turn allows one to prove interesting results, for example that any continuous map from a closed ball in a finite-dimensional Euclidean space into itself has a fixed point (Brower’s theorem).  

At the end of this teaching unit, a student will be able 
•    To compute homology groups of certain topological spaces;
•    Apply homology groups for studies of topological spaces and continuous maps between them;
•    Decide if a topological space is a CW space;
•    Compute cellular homology groups;
•    Compute fundamental groups of topological spaces;
•    Describe covering spaces of a given topological space.
 

Prerequisites and Corequisites

Required and Corequired knowledge and skills

MATH-F-211 Topologie

Teaching methods and learning activities

•    Lectures, including remote lecture on Teams if lecturing in person will not be possible.

References, bibliography, and recommended reading

J. Vick. Homology theory. An introduction to algebraic topology.
A. Hatcher. Algebraic Topology ( Chapters 1 and 2), available on line: http://www.math.cornell.edu/~hatcher/AT/ATpage.html
 

Contribution to the teaching profile

•    To acquire advanced notions in certain areas of mathematics.
•    Develop an abstraction process for the development of a theory.
•    Write a mathematically rigorous solution or a result in a mathematical theory.
 

Other information

Additional information

It is intended to provide written lecture notes. 

Contacts

Andriy Haydys, andriy.haydys@ulb.be

Campus

Plaine

Evaluation

Method(s) of evaluation

  • Oral examination

Oral examination

Oral examination

Language(s) of evaluation

  • english

Programmes