Convex hulls of random walks and their scaling limits
Convex hulls of random walks and their scaling limits
复制标题
随机游走的凸包及其缩放限制
DOI:
10.1016/j.spa.2015.06.008
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发表时间:
2015
影响因子:
1.4
通讯作者:
Wade A
中科院分区:
文献类型:
--
作者:
Wade A
For the perimeter length and the area of the convex hull of the first n steps of a planar random walk, we study n→∞ mean and variance asymptotics and establish non-Gaussian distributional limits. Our results apply to random walks with drift (for the area) and walks with no drift (for both area and perimeter length) under mild moments assumptions on the increments. These results complement and contrast with previous work which showed that the perimeter length in the case with drift satisfies a central limit theorem. We deduce these results from weak convergence statements for the convex hulls of random walks to scaling limits defined in terms of convex hulls of certain Brownian motions. We give bounds that confirm that the limiting variances in our results are non-zero.
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影响因子:
0.8
作者:
S. Evans
通讯作者:
S. Evans
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
S. Majumdar;A. Comtet;J. Randon
通讯作者:
J. Randon
影响因子:
0.5
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通讯作者:
G. Last
DOI:
10.1090/s0002-9947-1963-0156261-1
发表时间:
1963
影响因子:
1.3
作者:
O. Barndorff;G. Baxter
通讯作者:
G. Baxter