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Let X be an irreducible hypersurface in $\mathbb{P}^n$ of degree $d\geq 3$ with only isolated semi-weighted homogeneous singularities, such that $exp(\frac{2\pi i}{k})$ is a zero of the Alexander polynomial. Then we show that the…

Algebraic Geometry · Mathematics 2023-10-10 Remke Kloosterman

The zeta function of a K3 surface over a finite field satisfies a number of obvious (archimedean and l-adic) and a number of less obvious (p-adic) constraints. We consider the converse question, in the style of Honda-Tate: given a function…

Algebraic Geometry · Mathematics 2016-08-03 Lenny Taelman

We construct a modular compactification via stable slc pairs for the moduli spaces of K3 surfaces with a nonsymplectic group of automorphisms under the assumption that some combination of the fixed loci of automorphisms defines an effective…

Algebraic Geometry · Mathematics 2026-02-24 Valery Alexeev , Philip Engel , Changho Han

In this study, we construct four-dimensional F-theory models with 3 to 8 U(1) factors on products of K3 surfaces. We provide explicit Weierstrass equations of elliptic K3 surfaces with Mordell-Weil ranks of 3 to 8. We utilize the method of…

High Energy Physics - Theory · Physics 2021-06-30 Yusuke Kimura

I have finalized my old (1979) results about enumeration of connected components of moduli of real polarized K3 surfaces. As an application, using recent results of math.AG/0312396, the complete classification of real polarized K3 surfaces…

Algebraic Geometry · Mathematics 2009-12-08 Viacheslav V. Nikulin

We prove the existence of three irreducible curves $C_{12,m}$ of degree 12 with the same number of cusps and different Alexander polynomials. This exhibits a Zariski triple. Moreover we provide a set of generators for the elliptic threefold…

Algebraic Geometry · Mathematics 2024-10-22 Jose Ignacio Cogolludo-Agustin , Remke Kloosterman

We give more details to our examples in [9] of K3 surfaces over C such that they have infinite automorphism group but it preserves some elliptic pencil of the K3

Algebraic Geometry · Mathematics 2020-06-09 Viacheslav V. Nikulin

This paper is concerned with the arithmetic of the elliptic K3 surface with configuration [1,1,1,12,3*]. We determine the newforms and zeta-functions associated to X and its twists. We verify conjectures of Tate and Shioda for the…

Number Theory · Mathematics 2008-10-29 Matthias Schuett

We give applications of integral canonical models of orthogonal Shimura varieties and the Kuga-Satake morphism to the arithmetic of K3 surfaces over finite fields. We prove every K3 surface of finite height over a finite field admits a…

Number Theory · Mathematics 2018-12-27 Kazuhiro Ito , Tetsushi Ito , Teruhisa Koshikawa

We construct higher Chow cycles of type (2,1) on some families of K3 surfaces with non-symplectic automorphisms of order 3 and prove that our cycles are indecomposable for very general members. The proof is a combination of some…

Algebraic Geometry · Mathematics 2025-04-15 Ken Sato

We investigate a notion of "higher modularity" for elliptic curves over function fields. Given such an elliptic curve $E$ and an integer $r\geq 1$, we say that $E$ is $r$-modular when there is an algebraic correspondence between a stack of…

Number Theory · Mathematics 2026-05-06 Adam Logan , Jared Weinstein

The Zariski theorem says that for every hypersurface in a complex projective (resp. affine) space of dimension at least 3 and for every generic plane in the projective (resp. affine) space the natural embedding generates an isomorphism of…

alg-geom · Mathematics 2007-05-23 Shulim Kaliman

For a K3 surface of finite height over a field of odd characteristic, there exists a smooth lifting to the ring of Witt vectors such that the reduction map from the Picard group of the generic fiber to the Picard group of the special fiber…

Algebraic Geometry · Mathematics 2015-06-12 Junmyeong Jang

The aim of this paper is to give necessary and sufficient conditions for an integral polynomial to be the characteristic polynomial of a semi-simple isometry of some even unimodular lattice of given signature. This result has applications…

Number Theory · Mathematics 2022-12-29 Eva Bayer-Fluckiger

This is a survey of the Kawamata-Morrison cone conjecture on the structure of Calabi-Yau varieties and more generally Calabi-Yau pairs. We discuss the proof of the cone conjecture for algebraic surfaces, with plenty of examples. We show…

Algebraic Geometry · Mathematics 2010-08-24 Burt Totaro

A Nikulin configuration is the data of $16$ disjoint smooth rational curves on a K3 surface. According to a well known result of Nikulin, if a K3 surface contains a Nikulin configuration $\mathcal{C}$, then $X$ is a Kummer surface $X=Km(B)$…

Algebraic Geometry · Mathematics 2018-06-19 Xavier Roulleau , Alessandra Sarti

We consider symmetries of K3 manifolds. Holomorphic symplectic automorphisms of K3 surfaces have been classified, and observed to be subgroups of the Mathieu group $M_{23}$. More recently, automorphisms of K3 sigma models commuting with…

High Energy Physics - Theory · Physics 2021-02-03 Anindya Banerjee , Gregory W. Moore

Let k be a perfect field of characteristic p > 2. In this note, we show that the local moduli space of a non-supersingular K3 surface over k with trivial deformation of the associated enlarged formal Brauer group admits a natural…

Algebraic Geometry · Mathematics 2007-05-23 Jeng-Daw Yu

Nikulin has classified all finite abelian groups acting symplectically on a K3 surface and he has shown that the induced action on the K3 lattice $U^3\oplus E_8(-1)^2$ depends only on the group but not on the K3 surface. For all the groups…

Algebraic Geometry · Mathematics 2009-02-23 Alice Garbagnati , Alessandra Sarti

We classify Enriques involutions on a K3 surface, up to conjugation in the automorphism group, in terms of lattice theory. We enumerate such involutions on singular K3 surfaces with transcendental lattice of discriminant smaller than or…

Algebraic Geometry · Mathematics 2022-03-15 Ichiro Shimada , Davide Cesare Veniani
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