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In this paper we prove the following theorem. Let $f:\mathbb{A}^2\rightarrow \mathbb{A}^2$ be a dominate polynomial endomorphisms defined over an algebraically closed field $k$ of characteristic $0$. If there are no nonconstant rational…

Dynamical Systems · Mathematics 2019-02-20 Junyi Xie

We prove a conjecture of Medvedev and Scanlon for endomorphisms of connected commutative linear algebraic groups $G$ defined over an algebraically closed field $\mathbb{k}$ of characteristic $0$. That is, if $\Phi\colon G\longrightarrow G$…

Number Theory · Mathematics 2018-10-04 Dragos Ghioca , Fei Hu

In this paper we prove the following theorem. Let $f$ be a dominant endomorphism of a smooth projective surface over an algebraically closed field of characteristic $0$. If there is no nonconstant invariant rational function under $f$, then…

Dynamical Systems · Mathematics 2021-04-06 Junyi Xie

We prove the Zariski dense orbit conjecture in positive characteristic for regular self-maps of split semiabelian varieties.

Number Theory · Mathematics 2021-08-17 Dragos Ghioca , Sina Saleh

Let $X/K$ be a smooth projective variety defined over a number field, and let $f:X\to{X}$ be a morphism defined over $K$. We formulate a number of statements of varying strengths asserting, roughly, that if there is at least one point…

Number Theory · Mathematics 2024-05-31 Hector Pasten , Joseph H. Silverman

We study finite orbits for non-elementary groups of automorphisms of compact projective surfaces. In particular we prove that if the surface and the group are defined over a number field k and the group contains parabolic elements, then the…

Algebraic Geometry · Mathematics 2020-12-04 Serge Cantat , Romain Dujardin

In this paper we first note a result of birational automorphisms with bounded degree of projective varieties related with the Zariski dense orbit conjecture (ZDO) and the Zariski density of periodic points. Next, we give a reduced result of…

Algebraic Geometry · Mathematics 2023-12-22 Sichen Li

Let $A$ be an abelian variety defined over $\bar{\mathbb{Q}}$, and let $\varphi$ be a dominant endomorphism of $A$ as an algebraic variety. We prove that either there exists a non-constant rational fibration preserved by $\varphi$, or there…

Number Theory · Mathematics 2014-12-08 Dragos Ghioca , Thomas Scanlon

We show that crystalline points are Zariski dense in the deformation space of a representation of the absolute Galois group of a $p$-adic field. We also show that these points are dense in the subspace parameterizing deformations with…

Number Theory · Mathematics 2023-04-12 Gebhard Böckle , Ashwin Iyengar , Vytautas Paškūnas

Let $f:\mathbb{A}^N\to\mathbb{A}^N$ be a regular endomorphism of algebraic degree $d\geq2$ (i.e., $f$ extends to an endomorphism on $\mathbb{P}^N$ of algebraic degree $d$) defined over a number field. We prove that if the set of cyclotomic…

Dynamical Systems · Mathematics 2026-01-21 Zhuchao Ji , Junyi Xie , Geng-Rui Zhang

Let $f \colon X \to X$ be a surjective endomorphism of a normal projective surface. When $\operatorname{deg} f \geq 2$, applying an (iteration of) $f$-equivariant minimal model program (EMMP), we determine the geometric structure of $X$.…

Algebraic Geometry · Mathematics 2023-01-11 Jia Jia , Junyi Xie , De-Qi Zhang

We formulate a strengthening of the Zariski dense orbit conjecture for birational maps of dynamical degree one. So, given a quasiprojective variety $X$ defined over an algebraically closed field $K$ of characteristic $0$, endowed with a…

Dynamical Systems · Mathematics 2022-02-15 Jason Bell , Dragos Ghioca

We introduce a new generalization of the notion of preperiodic hypersurface and explore some of its basic ramifications. We also prove that among nonlinear endomorphisms of projective space, those with a periodic critical point are Zariski…

Dynamical Systems · Mathematics 2023-07-27 Matt Olechnowicz

We characterize the Zariski topologies over an algebraically closed field in terms of general dimension-theoretic properties. Some applications are given to complex manifold and to strongly minimal sets.

Algebraic Geometry · Mathematics 2016-09-06 Ehud Hrushovski , Boris Zilber

We prove that every mapping torus of any free group endomorphism is residually finite. We show how to use a not yet published result of E. Hrushovski to extend our result to arbitrary linear groups. The proof uses algebraic self-maps of…

Group Theory · Mathematics 2009-11-10 Alexander Borisov , Mark Sapir

We consider the potential density of rational points on an algebraic variety defined over a number field $K$, i.e., the property that the set of rational points of $X$ becomes Zariski dense after a finite field extension of $K$. For a…

Algebraic Geometry · Mathematics 2022-03-03 Jia Jia , Takahiro Shibata , De-Qi Zhang

We investigate some general questions in algebraic dynamics in the case of generic endomorphisms of projective spaces over a field of characteristic zero. The main results that we prove are that a generic endomorphism has no non-trivial…

Dynamical Systems · Mathematics 2016-01-20 Najmuddin Fakhruddin

Our main result is that the image of the quantum representation of a central extension of the mapping class group of the genus $g\geq 3$ closed orientable surface at a prime $p\geq 5$ is a Zariski dense discrete subgroup of some higher rank…

Group Theory · Mathematics 2016-04-08 Louis Funar

Let $X$ be a quasi-projective variety and $f\colon X\to X$ a finite surjective endomorphism. We consider Zariski Dense Orbit Conjecture (ZDO), and Adelic Zariski Dense Orbit Conjecture (AZO). We consider also Kawaguchi-Silverman Conjecture…

Algebraic Geometry · Mathematics 2024-11-15 Jia Jia , Takahiro Shibata , Junyi Xie , De-Qi Zhang

Let $X$ be a variety defined over an algebraically closed field $k$ of characteristic $0$, let $N\in\mathbb{N}$, let $g:X\dashrightarrow X$ be a dominant rational self-map, and let $A:\mathbb{A}^N\to \mathbb{A}^N$ be a linear transformation…

Algebraic Geometry · Mathematics 2018-03-13 Dragos Ghioca , Junyi Xie
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