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This paper studies curves on quartic K3 surfaces, or more generally K3 surfaces which are complete intersection in weighted projective spaces. A folklore conjecture concerning rational curves on K3 surfaces states that all K3 surfaces…

Algebraic Geometry · Mathematics 2019-02-01 Takeo Nishinou

We extend the notion of lattice polarization for K3 surfaces to families over a (not necessarily simply connected) base, in a way that gives control over the action of monodromy on the algebraic cycles, and discuss the uses of this new…

Algebraic Geometry · Mathematics 2016-02-01 Charles F. Doran , Andrew Harder , Andrey Y. Novoseltsev , Alan Thompson

We study the class of complex algebraic K3 surfaces admitting an embedding of H+E8+E8 inside the Neron-Severi lattice. These special K3 surfaces are classified by a pair of modular invariants, in the same manner that elliptic curves over…

Algebraic Geometry · Mathematics 2007-05-23 Adrian Clingher , Charles F. Doran

We study the decomposability of a Lagrangian homology class on a K3 surface into a sum of classes represented by special Lagrangian submanifolds, and develop criteria for it in terms of lattice theory. As a result, we prove the…

Differential Geometry · Mathematics 2022-08-16 Kuan-Wen Lai , Yu-Shen Lin , Luca Schaffler

We consider smooth Riemannian surfaces whose curvature $K$ satisfies the relation $\Delta\log|K-c|=aK+b$ away from points where $K=c$ for some $(a,b,c)\in\mathbb{R}^3$, which we call generalized Ricci surfaces. We prove some isometric…

Differential Geometry · Mathematics 2023-11-21 Benoît Daniel , Yiming Zang

We construct Zariski K3 surfaces of Artin invariant 1, 2 and 3 in many characteristics. In particular, we prove that any supersingular Kummer surface is Zariski if the characteristic is not congruent to 1 modulo 12. Our methods combine…

Algebraic Geometry · Mathematics 2017-10-25 Toshiyuki Katsura , Matthias Schütt

We study the cones of surfaces on varieties of lines on cubic fourfolds and Hilbert schemes of points on K3 surfaces. From this we obtain new examples of nef cycles which fail to be pseudoeffective.

Algebraic Geometry · Mathematics 2019-06-27 John Christian Ottem

We prove a Neron--Ogg--Shafarevich type criterion for good reduction of K3 surfaces, which states that a K3 surface over a complete discrete valuation field has potential good reduction if its $l$-adic cohomology group is unramified. We…

Algebraic Geometry · Mathematics 2017-01-06 Yuya Matsumoto

We prove a formula expressing the motivic integral (\cite{ls}) of a K3 surface over $\bC((t))$ with semi-stable reduction in terms of the associated limit Hodge structure. Secondly, for every smooth variety over a non-archimedean field we…

Algebraic Geometry · Mathematics 2012-07-19 Allen J. Stewart , Vadim Vologodsky

Consider the Fulton-MacPherson configuration space of $n$ points on $\P^1$, which is isomorphic to a certain moduli space of stable maps to $\P^1$. We compute the cone of effective ${\mathfrak S}_n$-invariant divisors on this space. This…

Algebraic Geometry · Mathematics 2007-05-23 Brendan Hassett , Yuri Tschinkel

We consider the variant of Mirror Symmetry Conjecture for K3 surfaces which relates "geometry" of curves of a general member of a family of K3 with "algebraic functions" on the moduli of the mirror family. Lorentzian Kac--Moody algebras are…

alg-geom · Mathematics 2008-02-03 Valeri A. Gritsenko , Viacheslav V. Nikulin

We prove that there exists a one to one correspondence between smooth quartic surfaces with an inner Galois point and Eisenstein $K3$ surfaces of type $(4, 3)$. Furthermore we characterize the quartic surface with 8 (the maximum number)…

Algebraic Geometry · Mathematics 2023-11-29 Kei Miura , Shingo Taki

A rational Lagrangian fibration f on an irreducible symplecitc variety V is a rational map which is birationally equivalent to a regular surjective morphism with Lagrangian fibers. By analogy with K3 surfaces, it is natural to expect that a…

Algebraic Geometry · Mathematics 2007-05-23 D. Markushevich

The purpose of this short note is to study dominant rational maps from punctual Hilbert schemes of length $k>1$ of projective K3 surfaces $S$ containing infinitely many rational curves. Precisely, we prove that their image is necessarily…

Algebraic Geometry · Mathematics 2016-06-14 Hsueh-Yung Lin

In studying rational points on elliptic K3 surfaces of the form $f(t)y^2=g(x)$, where $f,g$ are cubic or quartic polynomials (without repeated roots), we introduce a condition on the quadratic twists of two elliptic curves having…

Number Theory · Mathematics 2020-12-07 Zhizhong Huang

We study isogeny relations between K3 surfaces and Kummer surfaces. Specifically, we prove a Torelli-type theorem for the existence of rational maps from K3 surfaces to Kummer surfaces, and a Kummer sandwich theorem for K3 surfaces with…

Algebraic Geometry · Mathematics 2011-09-05 Shouhei Ma

We study the distribution of algebraic points on K3 surfaces.

Algebraic Geometry · Mathematics 2007-05-23 Fedor Bogomolov , Yuri Tschinkel

In general, not much is known about the arithmetic of K3 surfaces. Once the geometric Picard number, which is the rank of the Neron-Severi group over an algebraic closure of the base field, is high enough, more structure is known and more…

Algebraic Geometry · Mathematics 2007-05-23 Ronald van Luijk

We seek to characterize homology classes of Lagrangian projective spaces embedded in irreducible holomorphic-symplectic manifolds, up to the action of the monodromy group. This paper addresses the case of manifolds deformation-equivalent to…

Algebraic Geometry · Mathematics 2010-11-08 David Harvey , Brendan Hassett , Yuri Tschinkel

These notes will give an introduction to the theory of K3 surfaces. We begin with some general results on K3 surfaces, including the construction of their moduli space and some of its properties. We then move on to focus on the theory of…

Algebraic Geometry · Mathematics 2015-09-17 Andrew Harder , Alan Thompson