The topic of the summer school is ``computations in stable motivic homotopy theory". We will attempt to understand the computation of the the first stable homotopy groups of motivic spheres following the work of Oliver Röndigs, Markus Spitzweck, Paul Arne Østvær; in particular, this establishes in the affirmative of Fabien Morel.
Main references:
The first stable homotopy groups of motivic spheres by Oliver Röndigs, Markus Spitzweck, Paul Arne Østvær