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Growth of local height functions along orbits of self-morphisms on projective varieties

Algebraic Geometry 2022-08-31 v3 Dynamical Systems Number Theory

Abstract

In this paper, we consider the limit limnvSλY,v(fn(x))/hH(fn(x)) \lim_{n \to \infty} \sum_{v\in S} \lambda_{Y,v}(f^{n}(x))/h_{H}(f^{n}(x)) where f ⁣:XXf \colon X \longrightarrow X is a surjective self-morphism on a smooth projective variety XX over a number field, SS is a finite set of places, λY,v \lambda_{Y,v} is a local height function associated with a proper closed subscheme YXY \subset X, and hHh_{H} is an ample height function on XX. We give a geometric condition which ensures that the limit is zero, unconditionally when dimY=0\dim Y=0 and assuming Vojta's conjecture when dimY1\dim Y\geq1. In particular, we prove (one is unconditional, one is assuming Vojta's conjecture) Dynamical Lang-Siegel type theorems, that is, the relative sizes of coordinates of orbits on PN\mathbb{P}^{N} are asymptotically the same with trivial exceptions. These results are higher dimensional generalization of Silverman's classical result.

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Cite

@article{arxiv.2005.08093,
  title  = {Growth of local height functions along orbits of self-morphisms on projective varieties},
  author = {Yohsuke Matsuzawa},
  journal= {arXiv preprint arXiv:2005.08093},
  year   = {2022}
}

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28 pages