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For a very general product $A$ of seven or more elliptic curves, every rational curve on the Kummer variety of $A$ projects trivially onto the Kummer variety of at least one of its factors. As a consequence, a very general member of certain…

Algebraic Geometry · Mathematics 2020-09-03 Bo-Hae Im , Michael Larsen , Sailun Zhan

We prove that a Kummer surface defined over a complete strictly Henselian discretely valued field $K$ of residue characteristic different from 2 admits a strict Kulikov model after finite base change. The Kulikov models we construct will be…

Algebraic Geometry · Mathematics 2021-07-01 Otto Overkamp

In this paper we obtain the genus field of a general Kummer extension of a global rational function field. We study first the case of a general Kummer extension of degree a power of a prime. Then we prove that the genus field of a composite…

Number Theory · Mathematics 2021-05-17 Martha Rzedowski-Calderón , Gabriel Villa-Salvador

A different proof to a known criterion of derived equivalence implying birationality is given. Derived equivalent smooth projective curves over an algebraically closed field are proved to be isomorphic. A different proof of derived…

Algebraic Geometry · Mathematics 2011-08-10 Yu-Han Liu

We discuss a generalization of Kummer construction which, on the base of an integral representation of a finite group and local resolution of its quotient, produces a higher dimensional variety with trivial canonical class. As an…

Algebraic Geometry · Mathematics 2009-05-06 Marco Andreatta , Jaroslaw A. Wisniewski

In this note, we calculate the boundary of movable cones and nef cones of the generalized Kummer 4-fold $\mathrm{Km}^2(A)$ attached to an abelian surface $A$ with $\mathrm{rkNS}(A) = 1$.

Algebraic Geometry · Mathematics 2018-10-19 Akira Mori

Let $A\to C$ be a proper surjective morphism from a smooth connected quasi-projective commutative group scheme of dimension 2 to a smooth curve. The construction of generalized Kummer varieties gives a proper morphism $A^{[[n]]}\to…

Algebraic Geometry · Mathematics 2025-04-29 Zili Zhang

In characteristic $p=2$, we compute the singularities of Kummer varieties arising from products of elliptic curves. This result is generalized to Kummer varieties associated to ordinary abelian varieties.

Algebraic Geometry · Mathematics 2019-06-12 Benedikt Schilson

In this paper, we introduce generalized quiver varieties which include as special cases classical and cyclic quiver varieties. The geometry of generalized quiver varieties is governed by a finitely generated algebra P: the algebra P is…

Representation Theory · Mathematics 2018-08-31 Sarah Scherotzke

We study projective models of generalized Kummer fourfolds via O'Grady's theta groups and the classical Coble cubic. More precisely, we establish a duality between two singular models of the generalized Kummer fourfold of a Jacobian abelian…

Algebraic Geometry · Mathematics 2025-05-28 Daniele Agostini , Pietro Beri , Franco Giovenzana , Ángel David Ríos Ortiz

Tom Bridgeland constructed explicit stability conditions on K3 surfaces. This paper attempts to shed more light on these particular examples, especially on the hearts of the underlying t-structures. We prove that two K3 surfaces X and X'…

Algebraic Geometry · Mathematics 2013-09-12 Daniel Huybrechts

A generalized Kummer surface $X$ obtained as the quotient of an abelian surface by a symplectic automorphism of order 3 contains a $9\mathbf{A}_{2}$-configuration of $(-2)$-curves. Such a configuration plays the role of the…

Algebraic Geometry · Mathematics 2021-05-18 David Kohel , Xavier Roulleau , Alessandra Sarti

We study derived categories of coherent sheaves on abelian varieties. We give a criterion for the equivalence of the derived categories on two abelian varieties. We describe the autoequivalence group for the derived category of coherent…

alg-geom · Mathematics 2025-07-25 Dmitri Orlov

A generalized Kummer surface $X$ of order $3$ is the minimal resolution of the quotient of an abelian surface $A$ by an order $3$ symplectic automorphism. We study a generalization of a problem of Shioda for classical Kummer surfaces, which…

Algebraic Geometry · Mathematics 2024-12-04 Xavier Roulleau , Alessandra Sarti

Let $A$ and $B$ be Gorenstein Artin algebras of Cohen-Macaulay finite type. We prove that, if $A$ and $B$ are derived equivalent, then their Cohen-Macaulay Auslander algebras are also derived equivalent.

K-Theory and Homology · Mathematics 2015-10-12 Shengyong Pan

Let $A^{[[n]]}$ denote the $2(n - 1)$-dimensional generalised Kummer variety constructed from the abelian surface $A$. Further, let $X$ be an arbitrary smooth projective surface with $\int_X c_1(X)^2 \neq 0$, and $X^{[k]}$ the Hilbert…

Algebraic Geometry · Mathematics 2007-05-23 Marc Arnold Nieper-Wisskirchen

We explicitly construct the Kummer variety associated to the Jacobian of a hyperelliptic curve of genus 3 that is defined over a field of characteristic not equal to 2 and has a Weierstra{\ss} point defined over the same field. We also…

Algebraic Geometry · Mathematics 2019-02-20 J. Steffen Müller

We construct two pencils of bielliptic curves of genus three and genus five. The first pencil is associated with a general abelian surface with a polarization of type $(1,2)$. The second pencil is related to the first by an unramified…

Algebraic Geometry · Mathematics 2022-01-28 Adrian Clingher , Andreas Malmendier , Tony Shaska

We produce twisted derived equivalences between torsors under abelian varieties and their moduli spaces of simple semi-homogeneous sheaves. We also establish the natural converse to this result and show that a large class of twisted derived…

Algebraic Geometry · Mathematics 2024-11-18 Tyler Lane

Let $k$ be an algebraically closed field of characteristic $p > 3$. Let $A$ be an abelian surface over $k$. Fix an integer $n \geq 1$ such that $p \nmid n$ and let $K^{[n]}$ be the $n$-th Generalized Kummer Variety associated to $A$. In…

Algebraic Geometry · Mathematics 2022-08-18 Parvez Rasul