4 citations · 5 across the 8 of their papers we have counts for
10 papers · 1 filter
K3 surface entropy and automorphism groups
Xun Yu
We derive a characterization of the complex projective K3 surfaces which have automorphisms of positive entropy in term of their Néron-Severi lattices. Along the way, we classify t…
On lattice polarizable cubic fourfolds
Song Yang, Xun Yu
We extend non-emtpyness and irreducibility of Hassett divisors to the moduli spaces of -polarizable cubic fourfolds for higher rank lattices , which in turn provides a system…
Automorphism groups of smooth cubic threefolds
Li Wei, Xun Yu
In this paper, we classify groups which faithfully act on smooth cubic threefolds. It turns out that there are exactly maximal ones and we describe them with explicit examples…
Rational cubic fourfolds in Hassett divisors
Song Yang, Xun Yu
We prove that every Hassett's Noether-Lefschetz divisor of special cubic fourfolds contains a union of three codimension-two subvarieties, parametrizing rational cubic fourfolds, i…
Coble's question and complex dynamics of inertia groups on surfaces
Keiji Oguiso, Xun Yu
We study the inertia groups of some smooth rational curves on 2-elementary K3 surfaces and singular K3 surfaces from the view of topological entropy, with an application to a long…
Minimum positive entropy of complex Enriques surface automorphisms
Keiji Oguiso, Xun Yu
We determine the minimum positive entropy of complex Enriques surface automorphisms. This together with McMullen's work completes the determination of the minimum positive entropy…