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math.NT2026
The good reduction of generalized Kummer surfaces in the non-supersingular case
Tianchen Zhao
In this article, we study the good reduction of generalized Kummer surfaces, which are K3 surfaces obtained as minimal resolutions of quotients of abelian surfaces by finite groups…
math.NT2025
Extendability of group actions on K3 or Enriques surfaces
Tianchen Zhao
Let be a K3 or Enriques surface with good reduction. Let be a finite group acting (not necessarily linearly) on . We give a criterion for this group action to extend to…