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On the distribution of orbits in affine varieties

Published online by Cambridge University Press:  03 July 2014

CLAYTON PETSCHE
CLAYTON PETSCHE*
Affiliation:
Department of Mathematics, Oregon State University, Corvallis, OR 97331, USA email [email protected]
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Abstract

Given an affine variety $X$, a morphism ${\it\phi}:X\rightarrow X$, a point ${\it\alpha}\in X$, and a Zariski-closed subset $V$ of $X$, we show that the forward ${\it\phi}$-orbit of ${\it\alpha}$ meets $V$ in at most finitely many infinite arithmetic progressions, and the remaining points lie in a set of Banach density zero. This may be viewed as a weak asymptotic version of the dynamical Mordell–Lang conjecture for affine varieties. The results hold in arbitrary characteristic, and the proof uses methods of ergodic theory applied to compact Berkovich spaces.

Type
Research Article
Information
Ergodic Theory and Dynamical Systems , Volume 35 , Issue 7 , October 2015 , pp. 2231 - 2241
Copyright
© Cambridge University Press, 2014 

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