Convex hulls of Lévy processes
Convex hulls of Lévy processes
复制标题
Lévy 过程的凸包
DOI:
10.1214/16-ecp19
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发表时间:
2015
影响因子:
0.5
通讯作者:
Florian Wespi
中科院分区:
文献类型:
--
作者:
I. Molchanov;Florian Wespi
Let X(t), t ≥ 0, be a Levy process in Rd starting at the origin. We study the closed
convex hull Zs of {X(t) : 0 ≤ t ≤ s}. In particular, we provide conditions for the
integrability of the intrinsic volumes of the random set Zs and find explicit expressions for their means in the case of symmetric α-stable Levy processes. If the process is symmetric and each its one-dimensional projection is non-atomic, we establish that the origin a.s. belongs to the interior of Zs for all s > 0. Limit theorems for the convex hull of Levy processes with normal and stable limits are also obtained.
影响因子:
1.4
作者:
Wade A
通讯作者:
Wade A