Resumen de Hopf-Galois objects and cogroupoids

Julien Bichon

• We survey some aspects of the theory of Hopf-Galois objects that may be studied advantageously by using the language of cogroupoids. These are the notes for a series of lectures given at Universidad Nacional de Córdoba, May 2010. The lectures are part of the course “Hopf-Galois theory” by Sonia Natale.