English

Around the dynamical Mordell-Lang conjecture

Number Theory 2023-07-28 v2 Algebraic Geometry Dynamical Systems

Abstract

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 endomorphisms of A2\mathbb{A}^2 over Q\overline{\mathbb{Q}}. We generalize this result to all endomorphisms of A2\mathbb{A}^2 over C\mathbb{C}. We generalize the weak DML theorem to a uniform version and to a version for partial orbit. Using this, we give a new proof of the Kawaguchi-Silverman-Matsuzawa' upper bound for arithmetic degree. We indeed prove a uniform version which works in both number field and function field case in any characteristic and it works for partial orbits. We also reformulate the ``pp-adic method", in particular the pp-adic interpolation lemma in language of Berkovich space and get more general statements. The third aim is to propose some further questions.

Keywords

Cite

@article{arxiv.2307.05885,
  title  = {Around the dynamical Mordell-Lang conjecture},
  author = {Junyi Xie},
  journal= {arXiv preprint arXiv:2307.05885},
  year   = {2023}
}

Comments

This note is for Proceedings of the Simons Symposium "Algebraic, Complex, and Arithmetic Dynamics"

R2 v1 2026-06-28T11:28:04.738Z