arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1904.12751math.PR
收藏

随机定向Manhattan格上的确定性行走

A deterministic walk on the randomly oriented Manhattan lattice

Andrea Collevecchio, Kais Hamza, Laurent Tournier

摘要:

考虑随机定向的二维曼哈顿晶格,其中通过翻转独立且相同分布的硬币,一次性地为每条水平线和每条垂直线分配随机方向。然后,确定性行走从原点开始,每一步都沿当前位置的水平线和垂直线的方向对角移动到最近的顶点。这个定义可以自然地推广到更大的维度,但我们主要关注二维的情况。在这种情况下,几乎可以肯定的是,这个过程在所有大的时间都局限于两个顶点。我们还提供了估计的尾巴的长度的路径,当行走定义在二维格。具体地,路径大于$n$的概率在$n$中以次指数方式衰减。很容易证明,高维路径可能不会局限于两个顶点,但最终仍将成为周期性的,因此是有界的。

英文摘要:

Consider a randomly-oriented two dimensional Manhattan lattice where each horizontal line and each vertical line is assigned, once and for all, a random direction by flipping independent and identically distributed coins. A deterministic walk is then started at the origin and at each step moves diagonally to the nearest vertex in the direction of the horizontal and vertical lines of the present location. This definition can be generalized, in a natural way, to larger dimensions, but we mainly focus on the two dimensional case. In this context the process localizes on two vertices at all large times, almost surely. We also provide estimates for the tail of the length of paths, when the walk is defined on the two dimensional lattice. In particular, the probability of the path to be larger than $n$ decays sub-exponentially in $n$. It is easy to show that higher dimensional paths may not localize on two vertices but will still eventually become periodic, and are therefore bounded.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑