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The article revisits birational and biregular automorphisms of the Hilbert scheme of points on a K3 surface from the perspective of derived categories. Under the assumption that the K3 surface is generic, the birational and biregular…

Algebraic Geometry · Mathematics 2026-05-26 Ziqi Liu

We classify the group of birational automorphisms of Hilbert schemes of points on algebraic K3 surfaces of Picard rank one. We study whether these automorphisms are symplectic or non-symplectic and if there exists a hyperk\"ahler birational…

Algebraic Geometry · Mathematics 2022-09-27 Pietro Beri , Alberto Cattaneo

We study K3 surfaces over non-closed fields and relate the notion of derived equivalence to arithmetic problems.

Algebraic Geometry · Mathematics 2015-09-09 Brendan Hassett , Yuri Tschinkel

In this paper, we check that Fano schemes of lines on certain rational cubic fourfolds are birational to Hilbert schemes of two points on K3 surfaces.

Algebraic Geometry · Mathematics 2018-05-15 Genki Ouchi

Suppose that a Hilbert scheme of points on a K3 surface S of Picard rank one admits a rational Lagrangian fibration. We show that if the degree of the surface is sufficiently large compared to the number of points, then the Hilbert scheme…

Algebraic Geometry · Mathematics 2022-10-07 Xuqiang Qin , Justin Sawon

We prove that the Hilbert scheme of points on a normal quasi-projective surface with at worst rational double point singularities is irreducible.

Algebraic Geometry · Mathematics 2017-01-11 Xudong Zheng

We give a necessary and sufficient condition for an automorphism of the Hilbert scheme of points on a K3 surface (non necessarily algebraic) to be induced by an automorphism of the surface. We prove furthermore that the group of birational…

Algebraic Geometry · Mathematics 2011-05-30 Samuel Boissiere , Alessandra Sarti

We prove that elliptic K3 surfaces over a number field which admit a second elliptic fibration satisfy the potential Hilbert property. Equivalently, the set of their rational points is not thin after a finite extension of the base field.…

Algebraic Geometry · Mathematics 2024-04-11 Damián Gvirtz-Chen , Giacomo Mezzedimi

We give a characterization of irreducible symplectic fourfolds which are given as Hilbert scheme of points on a K3 surface.

Algebraic Geometry · Mathematics 2007-05-23 Yasunari Nagai

We construct a new autoequivalence of the derived category of the Hilbert scheme of n points on a K3 surface, and of the variety of lines on a smooth cubic 4-fold. For Hilb^2 and the variety of lines, we use the theory of spherical…

Algebraic Geometry · Mathematics 2021-05-12 Nicolas Addington

We construct an explicit, multiplicative Chow-K\"unneth decomposition for the Hilbert scheme of points of a K3 surface. We further refine this decomposition with respect to the action of the Looijenga-Lunts-Verbitsky Lie algebra.

Algebraic Geometry · Mathematics 2021-03-12 Andrei Neguţ , Georg Oberdieck , Qizheng Yin

We study automorphisms of the Hilbert scheme of $n$ points on a generic projective K3 surface $S$, for any $n \geq 2$. We show that the automorphism group of $S^{[n]}$ is either trivial or generated by a non-symplectic involution and we…

Algebraic Geometry · Mathematics 2018-03-20 Alberto Cattaneo

We determine the automorphism group of the Hilbert scheme of two points on a generic projective K3 surface of any polarization. We obtain in particular new examples of Hilbert schemes of points having non-natural non-symplectic…

Algebraic Geometry · Mathematics 2014-11-18 Samuel Boissière , Andrea Cattaneo , Marc Nieper-Wisskirchen , Alessandra Sarti

We prove the standard conjectures for complex projective varieties that are deformations of the Hilbert scheme of points on a K3 surface. The proof involves Verbitsky's theory of hyperholomorphic sheaves and a study of the cohomology…

Algebraic Geometry · Mathematics 2019-02-20 François Charles , Eyal Markman

We give a new example of potential density of rational points on the third punctual Hilbert scheme of a K3 surface.

Algebraic Geometry · Mathematics 2024-12-09 Ekaterina Amerik , Mikhail Lozhkin

We derive a crepant resolution correspondence for some genus zero reduced Gromov-Witten invariants of Hilbert schemes of points on a K3 surface.

Algebraic Geometry · Mathematics 2025-10-08 Deniz Genlik , Hsian-Hua Tseng

Let $\mathrm{Hilb}^gS$ be the Hilbert scheme of $g$ points on a K3 surface $S$. Suppose that $\mathrm{Pic}S\cong\Z C$ where $C$ is a smooth curve with $C^2=2(g-1)n^2$. We prove that $\mathrm{Hilb}^gS$ is a Lagrangian fibration.

Algebraic Geometry · Mathematics 2009-04-03 Justin Sawon

An example of potential density of rational points on the second punctual Hilbert scheme of certain K3 surfaces is treated in detail. This is an amplification of some remarks made by O'Grady and Oguiso.

Algebraic Geometry · Mathematics 2009-07-22 Ekaterina Amerik

A ribbon D over a variety C is a scheme such that D_{red} = C, the ideal I in O_D of Cis a line bundle on C and I^2 = 0. A two dimensional ribbon is called a carpet. In this article we show that if D is a K3 carpet, that is a ribbon…

alg-geom · Mathematics 2008-02-03 Francisco Gallego , B. P. Purnaprajna

We give a short, elementary and explicit proof of the existence of Hilbert schemes of points on affine schemes. As a direct consequence we obtain the existence of the Hilbert scheme of points on any projective scheme, not necessarily of…

Algebraic Geometry · Mathematics 2007-05-23 Trond Gustavsen , Dan Laksov , Roy Skjelnes
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