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We consider regular endomorphisms of the complex affine space with a degree gap $k$. They are endomorphisms $f$ of $\mathbb{A}_{\mathbb{C}}^{N}$ of the form…

Dynamical Systems · Mathematics 2026-05-13 She Yang , Aoyang Zheng

We prove a uniform version of the Dynamical Mordell-Lang Conjecture for \'etale maps; also, we obtain a gap result for the growth rate of heights of points in an orbit along an arbitrary endomorphism of a quasiprojective variety defined…

Number Theory · Mathematics 2019-06-21 Jason Bell , Dragos Ghioca , Matthew Satriano

In this paper, we study arithmetic dynamics in arbitrary characteristic, in particular in positive characteristic. We generalise some basic facts on arithmetic degree and canonical height in positive characteristic. As applications, we…

Dynamical Systems · Mathematics 2021-07-09 Junyi Xie

For endomorphisms of projective varieties, we prove that the arithmetic degree of a point with Zariski dense orbit must be a cohomological Lyapunov multiplier of the dynamical system. We will apply our result to deduce a corollary towards…

Dynamical Systems · Mathematics 2025-07-24 Jiarui Song , Junyi Xie , She Yang

We provide an explicit formula on the growth rate of ample heights of rational points under iteration of endomorphisms on smooth projective varieties over number fields. As an application, we give a positive answer to a problem of Dynamical…

Algebraic Geometry · Mathematics 2018-06-26 Kaoru Sano

Let k be an algebraically closed field of characteristic 0, let X=P^1\times A^N and let f be a rational endomorphism of X given by (x,y)--->(g(x), A(x)y), where g is a rational function, while A is an N-by-N matrix with entries in k(x). We…

Number Theory · Mathematics 2018-03-13 Dragos Ghioca , Junyi Xie , with an appendix written by Michael Wibmer

We define an "ample canonical height" for an endomorphism on a projective variety, which is essentially a generalization of the canonical heights for polarized endomorphisms introduced by Call--Silverman. We formulate a dynamical analogue…

Algebraic Geometry · Mathematics 2018-02-05 Takahiro Shibata

In previous work, the first author, Ghioca, and the third author introduced a broad dynamical framework giving rise to many classical sequences from number theory and algebraic combinatorics. Specifically, these are sequences of the form…

Number Theory · Mathematics 2021-02-24 Jason P. Bell , Fei Hu , Matthew Satriano

We prove the existence of the arithmetic degree for dominant rational self-maps at any point whose orbit is generic. As a corollary, we prove the same existence for \'etale morphisms on quasi-projective varieties and any points on it. We…

Algebraic Geometry · Mathematics 2025-05-15 Yohsuke Matsuzawa

There are three aims of this note. The first one is to report some advances around the dynamical Mordell-Lang (=DML) conjecture. Second, we generalize some known results. For example, the Dynamical Mordell-lang conjecture was known for…

Number Theory · Mathematics 2023-07-28 Junyi Xie

We show that if $\phi : X \to X$ is an automorphism of a smooth projective variety and $D \subset X$ is an irreducible divisor for which the set of $d$ in $D$ with $\phi^n(d)$ in $D$ for some nonzero $n$ is not Zariski dense, then $(X,…

Algebraic Geometry · Mathematics 2016-04-29 John Lesieutre , Daniel Litt

Let K be an algebraic number field. For a degree d rational morphism of projective n-space defined over K let R denote its minimal resultant ideal. For a fixed height function on the moduli space of dynamical systems this paper shows that…

Number Theory · Mathematics 2014-08-14 Brian Stout , Adam Towsley

Ufnarovski remarked in 1990 that it is unknown whether any finitely presented associative algebra of linear growth is automaton, that is, whether the set of normal words in the algebra form a regular language. If the algebra is graded, then…

Rings and Algebras · Mathematics 2017-06-21 Dmitri Piontkovski

We prove that two finite endomorphisms of the unit disk with degree at least two have orbits with infinite intersections if and only if they have a common iteration.

Number Theory · Mathematics 2014-03-18 Ming-Xi Wang

We prove the dynamical Mordell-Lang conjecture for product of endomorphisms of an affine curve and a projective curve over $\overline{\mathbb{Q}}$.

Dynamical Systems · Mathematics 2026-04-17 Junyi Xie , She Yang , Aoyang Zheng

We show that the dynamical degree of an (i.i.d) random sequence of dominant, rational self-maps on projective space is almost surely constant. We then apply this result to height growth and height counting problems in random orbits.

Number Theory · Mathematics 2019-04-10 Wade Hindes

We define arithmetical and dynamical degrees for dynamical systems with several rational maps on projective varieties, study their properties and relations, and prove the existence of a canonical height function associated with divisorial…

Dynamical Systems · Mathematics 2017-12-29 Jorge Mello

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

Let f : X --> X be a dominant rational map of a projective variety defined over a number field. An important geometric-dynamical invariant of f is its (first) dynamical degree d_f= lim SpecRadius((f^n)^*)^{1/n}. For algebraic points P of X…

Number Theory · Mathematics 2012-12-14 Shu Kawaguchi , Joseph H. Silverman

We establish the dynamical Northcott property for polarized endomorphisms of a projective variety over a function field $\mathbf{K}$ of characteristic zero, and we relate this property to the notion of stability in complex dynamics. This…

Dynamical Systems · Mathematics 2024-09-18 Thomas Gauthier , Gabriel Vigny
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