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Being inspired by a work of Curtis T. McMullen about a very impressive automorphism of a K3 surface of Picard number zero, we shall clarify the structure of the bimeromorphic automorphism group of a non-projective hyperk\"ahler manifold, up…

Algebraic Geometry · Mathematics 2007-05-23 Keiji Oguiso

We study the groups of biholomorphic and bimeromorphic automorphisms of conic bundles over certain compact complex manifolds of algebraic dimension zero.

Algebraic Geometry · Mathematics 2020-06-30 Tatiana Bandman , Yuri G. Zarhin

We study the behavior of birational automorphism groups in families of projective hyper-K\"ahler manifolds.

Algebraic Geometry · Mathematics 2026-01-23 Francesco Antonio Denisi , Claudio Onorati , Francesca Rizzo , Sasha Viktorova

In this article we show how to calculate the group of automorphisms of flat K\"ahler manifolds. Moreover we are interested in the problem of classification of such manifolds up to biholomorphism. We consider these problems from two points…

Complex Variables · Mathematics 2022-10-06 Marek Hałenda , Rafał Lutowski

We show an analogous result of the famous Tits alternative for a group G of birational automorphisms of a projective hyperk\"aher manifold: Either G contains a non-commutative free group or G is an almost abelian group of finite rank. As an…

Algebraic Geometry · Mathematics 2007-05-23 Keiji Oguiso

First we show that any group of automorphisms of null-entropy of a projective hyperk\"ahler manifold $M$ is almost abelian of rank at most $\rho(M) - 2$. We then characterize automorphisms of a K3 surface with null-entropy and those with…

Algebraic Geometry · Mathematics 2007-05-23 Keiji Oguiso

We survey some properties of the automorphism groups of compact Kaehler manifolds. In particular, we present recent results by Keum, Oguiso and Zhang on the structure of these groups from the Tits alternative point of view. Several other…

Algebraic Geometry · Mathematics 2012-10-26 Tien-Cuong Dinh

We study geometry, topology and deformation spaces of noncompact complex hyperbolic manifolds (geometrically finite, with variable negative curvature), whose properties make them surprisingly different from real hyperbolic manifolds with…

Differential Geometry · Mathematics 2015-06-26 Boris Apanasov

We give a classification of finite groups of symplectic birational automorphisms on a manifold of K3^[3]-type with stable and stably saturated cohomological action. We describe the group of polarized automorphisms of a smooth double…

Algebraic Geometry · Mathematics 2024-12-30 Simone Billi , Stevell Muller , Tomasz Wawak

In this survey we discuss holomorphic $\mathbb{P}^1$-bundles $p: X \to Y$ over a non-uniruled complex compact K\"ahler manifold $Y$, paying a special attention to the case when $Y$ is a complex torus. We discuss so called Jordan properties…

Complex Variables · Mathematics 2023-03-02 Tatiana Bandman , Yuri G. Zarhin

We give an algebro-geometric approach towards the dynamics of automorphisms/endomorphisms of projective varieties or compact K\"ahler manifolds, try to determine the building blocks of automorphisms /endomorphisms, and show the relation…

Dynamical Systems · Mathematics 2018-06-21 De-Qi Zhang

We study algebraic actions of finite groups of quiver automorphisms on moduli spaces of quiver representations. We decompose the fixed loci using group cohomology and we give a modular interpretation of each component. As an application, we…

Algebraic Geometry · Mathematics 2019-09-20 Victoria Hoskins , Florent Schaffhauser

In this paper, we investigate automorphisms of compact K\"ahler manifolds with different levels of topological triviality. In particular, we provide several examples of smooth complex projective surfaces X whose groups of…

Algebraic Geometry · Mathematics 2021-04-16 Fabrizio Catanese , Wenfei Liu

Let $M$ be an irreducible holomorphic symplectic (hyperk\"ahler) manifold. If $b_2(M)\geq 5$, we construct a deformation $M'$ of $M$ which admits a symplectic automorphism of infinite order. This automorphism is hyperbolic, that is, its…

Algebraic Geometry · Mathematics 2019-02-20 Ekaterina Amerik , Misha Verbitsky

We study analysis over infinite dimensional manifolds consisted by sequences of almost K\"ahler manifolds. In particular we develop moduli theory of pseudo holomorphic curves into the spaces with high symmetry. As applications, we study…

Symplectic Geometry · Mathematics 2017-11-08 Tsuyoshi Kato

We describe all the dynamical degrees of automorphisms of hyperk\"ahler manifolds in terms of the first dynamical degree. We also present two explicit examples of different geometric flavours.

Algebraic Geometry · Mathematics 2009-03-23 Keiji Oguiso

We consider the class of quasiprojective varieties admitting a dominant morphism onto a curve with negative Euler characteristic. The existence of such a morphism is a property of the fundamental group. We show that for a variety in this…

Algebraic Geometry · Mathematics 2007-05-23 T. Bandman , A. Libgober

In this paper, we study the complex structures of complete hyperk\"ahler four-manifolds of infinite topological type arising from the Gibbons-Hawking ansatz. We show that for almost all complex structures in the hyperk\"ahler family, the…

Differential Geometry · Mathematics 2025-12-11 Wenxin He , Bin Xu

See math.CV/0509030 which replaces this paper.

Complex Variables · Mathematics 2007-05-23 A. V. Isaev

We prove that every 2-local automorphism of the unitary group or the general linear group on a complex infinite-dimensional separable Hilbert space is an automorphism. Thus these types of transformations are completely determined by their…

Operator Algebras · Mathematics 2007-05-23 Lajos Molnar , Peter Semrl
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