Pierre-Emmanuel Chaput TeXed his own lecture notes from the lecture he gave at the MPI seminar.

During his lecture, he went on following the Connes-Consani paper and their construction of the gadget associated to Chevalley groups, that gives a variety defined over the quadratic extension .

• Lecture V: Chevalley schemes are defined over ^[1]

Tomorrow, Peter Arndt from the University of Göttingen will give us an introduction to Durov’s approach to geometry. This will be the last talk at the F_un study seminar before Christmas. Hopefully Bram Mesland and Oliver Lorscheid will keep it running in January.