Colloquium

of the CRC 1442 Geometry: Deformations and Rigidity

Wednesday, 15 July 2026
at 4:00 pm
in lecture hall M2

Automorphisms of generic abelian varieties in positive characteristic

Speakers: Prof. Dr. Eva Viehmann and Dr. Paul Philippe

In 2001, Oort conjectured that generic supersingular abelian varieties of dimension at least 2 do not have automorphisms other than \pm id. We will report on the history and the recent proof of this conjecture (by Viehmann) as well as on possible generalizations (in joint work of the speakers with Fabian Schnelle) and implications.