Geometry and Arithmetic mini-courses
Speaker: Omid Amini (Ecole Polytechnique) will give a 4 hours mini-course.
Schedule: 15:00-16:00 on the 19, 20, 21, 22/09.
Title: Hybrid geometry of curves and their moduli spaces.
Speaker: Farbod Shokrieh (U. Washington) will give a 4 hours mini-course.
Schedule: 16:00-17:00 on the 19, 20, 21, 22/09.
Title: Tropical geometry, heights, and arithmetic.
Abstract: The theory of "heights" is essential in studying finiteness questions in diophantine geometry. For example, one of the most spectacular results in number theory is Faltings's theorem (Mordell's conjecture): a curve of genus greater or equal to 2 over the field of rational numbers has only finitely many rational points. A crucial tool in Faltings's proof was a notion of "height of an abelian variety".
In these lectures, we study the interplay between non-archimedean/tropical geometry, arithmetic/Arakelov geometry, and combinatorics/convex geometry arising from the theory of heights of abelian varieties. In particular, we discuss how Faltings's height can be related to invariants arising from tropical geometry and Berkovich analytic spaces. In the case of Jacobians, these invariants relate to combinatorics, convex geometry, and potential theory (electrical network) of metric graphs. If time permits, we will also discuss some applications in the study of analytic invariants on degenerating families of curves and abelian varieties.