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Algebraic Geometry Seminar | Jennifer Li (Princeton)

Wednesday, April 30, 2025 | 3:00 PM - 4:00 PM CT
Lunt Hall, 103, 2033 Sheridan Road, Evanston, IL 60208 map it

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.

Audience

  • Faculty/Staff
  • Student
  • Post Docs/Docs
  • Graduate Students

Contact

Yuchen Liu
(847) 491-5553
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