  I have merged the lecture notes (in french) of two 24 hour courses I taught
at the university Pierre-et-Marie Curie (Paris 6) during the first semester of
the academic year 2013-2014. The first one was devoted to the general material
that is needed for doing algebraic geometry (categories, commutative algebra,
sheaves, locally ringed spaces), and the second one to the foundations of
scheme theory.
