Growth of Local Height Functions Along Orbits of Self-Morphisms on Projective Varieties

Abstract

Abstract We consider the limit $$ \begin{align*} & \lim_{n\to \infty} \sum_{v\in S} \lambda_{Y,v}(f^{n}(x))/h_{H}(f^{n}(x)) \end{align*}$$where $f \colon X \longrightarrow X$ is a surjective self-morphism on a smooth projective variety $X$ over a number field, $S$ is a finite set of places, $ \lambda _{Y,v}$ is a local height function associated with a proper closed subscheme $Y \subset X$, and $h_{H}$ is an ample height function on $X$. We give a geometric condition that ensures that the limit is zero, unconditionally when $\dim Y=0$ and assuming Vojta’s conjecture when $\dim Y\geq 1$. 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 ${{\mathbb {P}}}^{N}$ are asymptotically the same with trivial exceptions. These results are higher dimensional generalization of Silverman’s classical result.