English

Finiteness properties of pseudo-hyperbolic varieties

Algebraic Geometry 2020-06-17 v2 Dynamical Systems Number Theory

Abstract

Motivated by Lang-Vojta's conjecture, we show that the set of dominant rational self-maps of an algebraic variety over a number field with only finitely many rational points in any given number field is finite by combining Amerik's theorem for dynamical systems of infinite order with properties of Prokhorov-Shramov's notion of quasi-minimal models. We also prove a similar result in the geometric setting by using again Amerik's theorem and Prokhorov-Shramov's notion of quasi-minimal model, but also Weil's regularization theorem for birational self-maps and properties of dynamical degrees. Furthermore, in the geometric setting, we obtain an analogue of Kobayashi-Ochiai's finiteness result for varieties of general type, and thereby generalize Noguchi's theorem (formerly Lang's conjecture).

Keywords

Cite

@article{arxiv.1909.12187,
  title  = {Finiteness properties of pseudo-hyperbolic varieties},
  author = {Ariyan Javanpeykar and Junyi Xie},
  journal= {arXiv preprint arXiv:1909.12187},
  year   = {2020}
}

Comments

33 pages. Minor changes to improve exposition. Updated bibliography

R2 v1 2026-06-23T11:27:06.118Z