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Related papers: A Note on Categorical Entropy of Bielliptic Surfac…

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This paper studies the categorical entropy of autoequivalences of derived categories of Hilbert schemes of points on surfaces and hyperk\"ahler manifolds. One of the central questions about categorical entropy is whether it satisfies a…

Algebraic Geometry · Mathematics 2026-01-21 Tomoki Yoshida

In this paper, we give an example of an autoequivalence with positive categorical entropy (in the sense of Dimitrov, Haiden, Katzarkov and Kontsevich) for any surface containing a (-2)-curve. Then we show that this equivalence gives another…

Algebraic Geometry · Mathematics 2021-04-23 Dominique Mattei

We classify Enriques surfaces of zero entropy, or, equivalently, Enriques surfaces with a virtually abelian automorphism group.

Algebraic Geometry · Mathematics 2024-06-27 Gebhard Martin , Giacomo Mezzedimi , Davide Cesare Veniani

We determine the generators of the autoequivalence group of the derived category of coherent sheaves on a bielliptic surface over an algebraically closed field of arbitrary characteristic. As a consequence, we prove that any algebraic…

Algebraic Geometry · Mathematics 2026-04-01 Yuki Tochitani

To an exact endofunctor of a triangulated category with a split-generator, the notion of entropy is given by Dimitrov-Haiden-Katzarkov-Kontsevich, which is a (possibly negative infinite) real-valued function of a real variable. In this…

Algebraic Geometry · Mathematics 2017-07-19 Kohei Kikuta , Atsushi Takahashi

We study the categorical entropy and counterexamples to Gromov-Yomdin type conjecture via homological mirror symmetry of K3 surfaces established by Sheridan-Smith. We introduce asymptotic invariants of quasi-endofunctors of dg categories,…

Algebraic Geometry · Mathematics 2022-07-20 Kohei Kikuta , Genki Ouchi

We describe the group of exact autoequivalences of the bounded derived category of coherent sheaves on a bielliptic surface. We achieve this by studying its action on the numerical Grothendieck group of the surface.

Algebraic Geometry · Mathematics 2017-02-13 Rory Potter

A complex compact surface which carries an automorphism of positive topological entropy has been proved by Cantat to be a torus, a K3 surface, an Enriques surface or a non-minimal rational surface. We deal with results obtained in this last…

Algebraic Geometry · Mathematics 2015-03-17 Julie Déserti

We classify Enriques surfaces with smooth K3 cover and finite automorphism group in arbitrary positive characteristic. The classification is the same as over the complex numbers except that some types are missing in small characteristics.…

Algebraic Geometry · Mathematics 2017-04-07 Gebhard Martin

A complex compact surface which carries an automorphism of positive topological entropy has been proved by Cantat to be either a torus, a K3 surface, an Enriques surface or a rational surface. Automorphisms of rational surfaces are quite…

Algebraic Geometry · Mathematics 2015-09-02 Julie Déserti , Julien Grivaux

In this paper, we compute categorical entropy of spherical twists. In particular, we prove that Gromov-Yomdin type conjecture holds for spherical twists. Moreover, we construct counterexamples of Gromov-Yomdin type conjecture for K3…

Algebraic Geometry · Mathematics 2017-06-13 Genki Ouchi

We use semi-orthogonal decompositions to construct autoequivalences of Hilbert schemes of points on Enriques surfaces and of Calabi-Yau varieties which cover them. While doing this, we show that the derived category of a surface whose…

Algebraic Geometry · Mathematics 2014-04-09 Andreas Krug , Pawel Sosna

We derive explicit equations for the Oguiso-Yu automorphism of minimum topological entropy on a complex Enriques surface. The approach is computer aided and makes use of elliptic fibrations.

Algebraic Geometry · Mathematics 2025-04-08 Simon Brandhorst , Matthias Zach

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 of complex surface automorphisms in each class of…

Algebraic Geometry · Mathematics 2020-12-23 Keiji Oguiso , Xun Yu

We show the existence of a rational surface automorphism of positive entropy with a given number of Siegel disks. Moreover, among automorphisms obtained from quadratic birational maps on the projective plane fixing irreducible cubic curves,…

Dynamical Systems · Mathematics 2020-09-18 Takato Uehara

In this note, we shall compute the categorical entropy of an autoequivalence on a generic abelian surface.

Algebraic Geometry · Mathematics 2017-01-17 Kota Yoshioka

We prove gap theorems for entropy norms on automorphism groups of K3 surfaces, Enriques surfaces, and irreducible holomorphic symplectic manifolds. We also study the achirality of automorphisms of K3 surfaces and Enriques surfaces in terms…

Algebraic Geometry · Mathematics 2026-04-17 Kohei Kikuta , Yuta Takada , Taiki Takatsu

We study the groups of automorphisms of rational algebraic surfaces that admit a relatively minimal pencil of curves of arithmetic genus one over an algebraically closed field of arbitrary characteristic. In particular, we classify such…

Algebraic Geometry · Mathematics 2021-06-25 Igor Dolgachev , Gebhard Martin

We show that the autoequivalence group of the derived category of any smooth projective toric surface is generated by the standard equivalences and spherical twists obtained from -2-curves. In many cases we give all relations between these…

Algebraic Geometry · Mathematics 2015-03-17 Nathan Broomhead , David Ploog

The aim of this paper is to construct many examples of rational surface automorphisms with positive entropy by means of the concept of orbit data. We show that if an orbit data satisfies some mild conditions, then there exists an…

Dynamical Systems · Mathematics 2013-10-30 Takato Uehara
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