This is the old version of the CRM site. Please use the new site on the page crmdegiorgi.sns.it

ERC Research Period on Diophantine Geometry

Positive cases of relative Manin-Mumford for semi-abelian surfaces (40')

speaker: Daniel Bertrand (Université Pierre et Marie Curie)

abstract: At a meeting in Pisa two years ago, I described a counterexample to the relative Manin-Mumford conjecture, due to the existence of Ribet sections on certain semi-abelian schemes (and immediately turned by B. Edixhoven into a geometric statement). In the present talk, I will report on a joint work with D. Masser, A. Pillay and U. Zannier, which shows that these sections are the only obstruction to the validity of the conjecture for semi-abelian surface schemes.

timetable:
Tue 16 Oct, 10:30 - 11:10, Sala Conferenze Centro De Giorgi
<< Go back