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arXiv 1408.4264math.DS
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分段仿射平面映射的高度增长

Growth of heights in piecewise-affine planar maps

John A. G. Roberts, Franco Vivaldi

摘要:

我们考虑增长的高度点的轨道(分段)仿射映射的平面,合理的参数。我们分析了全局和局部($p$ -adic)高度的渐近增长率,用于划分参数的素数$p$。我们证明了几乎所有的点在一个区域的线性(如一个椭圆岛的面积保持映射)有相同的指数增长性率。我们还表明,收敛的$p$ -adic高度可能是不均匀的,任意大的波动发生任意接近任何点。我们探讨数值的行为高度在混乱的地区,在面积保持和耗散系统。

英文摘要:

We consider the growth of heights of the points of the orbits of (piecewise) affine maps of the plane, with rational parameters. We analyse the asymptotic growth rate of both global and local ($p$-adic) heights, for the primes $p$ that divide the parameters. We show that almost all the points in a domain of linearity (such as an elliptic island in an area-preserving map) have the same exponential growth rate. We also show that the convergence of the $p$-adic height may be non-uniform, with arbitrarily large fluctuations occurring arbitrarily close to any point. We explore numerically the behaviour of heights in the chaotic regions, in both area-preserving and dissipative systems.

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