Showing 2025Show all
2 papers · 1 filter
math.AG2025
Del Pezzo surfaces of degree one and examples of Zariski multiples
Ichiro Shimada
We construct examples of Zariski N-tuples with large N using the monodromy action of the Weyl group of type E8 on the set of 240 lines in a del Pezzo surface of degree one.
math.AG2025
The automorphism group of an Apéry-Fermi K3 surface
Ichiro Shimada
An Apéry-Fermi K3 surface is a complex K3 surface of Picard number 19 that is birational to a general member of a certain one-dimensional family of affine surfaces related to the F…