When:
Wednesday, April 30, 2025
3:00 PM - 4:00 PM CT
Where: Lunt Hall, 103, 2033 Sheridan Road, Evanston, IL 60208 map it
Audience: Faculty/Staff - Student - Post Docs/Docs - Graduate Students
Contact:
Yuchen Liu
(847) 491-5553
Group: Department of Mathematics: Algebraic Geometry Seminar
Category: Lectures & Meetings
Title: Rational surfaces with a non-arithmetic automorphism group
Abstract: In [Tot12], Totaro gave examples of a K3 surface such that its automorphism group is not commensurable with an arithmetic group, answering a question of Mazur. We give examples of rational surfaces with the same property. Our examples Y are log Calabi-Yau surfaces, i.e., there is a reduced normal crossing divisor D in Y such that KY+D=0. This is joint work with Sebastián Torres.