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For a dominant rational self-map on a smooth projective variety defined over a number field, Kawaguchi and Silverman conjectured that the (first) dynamical degree is equal to the arithmetic degree at a rational point whose forward orbit is…

Algebraic Geometry · Mathematics 2017-01-27 Yohsuke Matsuzawa , Kaoru Sano , Takahiro Shibata

We study the algbraic dynamics for endomorphisms of projective spaces with coefficients in a p-adic field whose reduction in positive characteritic is the Frobenius. In particular, we prove a version of the dynamical Manin-Mumford…

Dynamical Systems · Mathematics 2018-11-07 Junyi Xie

We use height arguments to prove two results about the dynamical Mordell-Lang problem. (i) For an endomorphism of a projective variety, the return set of a dense orbit into a curve is finite if any cohomological Lyapunov multiplier of any…

Dynamical Systems · Mathematics 2026-05-11 Junyi Xie , She Yang

We get three basic results in algebraic dynamics: (1). We give the first algorithm to compute the dynamical degrees to arbitrary precision. (2). We prove that for a family of dominant rational self-maps, the dynamical degrees are lower…

Dynamical Systems · Mathematics 2025-04-01 Junyi Xie

We study an open question at the interplay between the classical and the dynamical Mordell-Lang conjectures in positive characteristic. Let $K$ be an algebraically closed field of positive characteristic, let $G$ be a finitely generated…

Number Theory · Mathematics 2022-05-06 Jason Bell , Dragos Ghioca

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

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 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

These notes are an introduction to and an overview of the theory of algebraic surfaces over algebraically closed fields of positive characteristic. After some background in characteristic-p-geometry, we sketch the Kodaira-Enriques…

Algebraic Geometry · Mathematics 2014-12-03 Christian Liedtke

We solve the dynamical Mordell-Lang problem in positive characteristic for automorphisms of projective surfaces.

Dynamical Systems · Mathematics 2026-05-04 Junyi Xie , She Yang

Let K be an algebraically closed field of prime characteristic p, let N be a positive integer, let f be a self-map on the algebraic torus T=G_m^N defined over K, let V be a curve in T defined over K, and let x be a K-point of T. We show…

Number Theory · Mathematics 2016-10-04 Dragos Ghioca

We study arithmetic degree of a dominant rational self-map on a smooth projective variety over a function field of characteristic zero. We see that the notion of arithmetic degree and some related problems over function fields are…

Algebraic Geometry · Mathematics 2017-03-02 Yohsuke Matsuzawa , Kaoru Sano , Takahiro Shibata

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

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 survey recent results regarding the study of dynamical properties of the space of positive definite functions and characters of higher rank lattices. These results have several applications to ergodic theory, topological dynamics,…

Operator Algebras · Mathematics 2025-07-17 Cyril Houdayer

Consider a cohomologically hyperbolic birational self-map defined over the algebraic numbers, for example, a birational self-map in dimension two with the first dynamical degree greater than one, or in dimension three with the first and the…

Algebraic Geometry · Mathematics 2023-06-13 Long Wang

Let K be an algebraically closed field of prime characteristic p, let X be a semiabelian variety defined over a finite subfield of K, let f be a regular self-map on X defined over K, let V be a subvariety of X defined over K, and let x be a…

Number Theory · Mathematics 2018-02-16 Pietro Corvaja , Dragos Ghioca , Thomas Scanlon , Umberto Zannier

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

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 continue our study of the dynamics of mappings with small topological degree on (projective) complex surfaces. Previously, under mild hypotheses, we have constructed an ergodic ``equilibrium'' measure for each such mapping. Here we study…

Dynamical Systems · Mathematics 2009-09-10 Jeffrey Diller , Romain Dujardin , Vincent Guedj
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