Unlikely intersections in Shimura varieties and abelian varieties
- π€ Speaker: Martin Orr (UCL)
- π Date & Time: Tuesday 21 January 2014, 16:15 - 17:15
- π Venue: MR13
Abstract
The Manin-Mumford conjecture, which is a theorem of Raynaud, states that a curve of genus at least 2 in an abelian variety contains only finitely many torsion points. Analogues of this, such as the AndrΓ©-Oort and Zilber-Pink conjectures, have been stated for Shimura varieties in place of abelian varieties. In their most general form these imply many Diophantine results such as the Mordell-Lang conjecture. In this talk I will outline these conjectures and discuss one method of attacking them, due to Pila and Zannier and using results from model theory. In particular I will apply this method to a problem about curves in the moduli space of principally polarised abelian varieties.
Series This talk is part of the Number Theory Seminar series.
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Martin Orr (UCL)
Tuesday 21 January 2014, 16:15-17:15