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arXiv 0912.4339math.PR
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球上凸包的布朗极限、局部极限和方差渐近性

Brownian limits, local limits and variance asymptotics for convex hulls in the ball

Pierre Calka, Tomasz Schreiber, J. E. Yukich

摘要:

Schreiber and Yukich [Ann. Probab. 36(2008)363-396]建立了单位球$\mathbb{B}^d, d\geq2$中随机凸多胞体几何的渐近表示,根据Poisson点过程的稳定泛函的一般理论以及根据广义抛物面增长过程。本文进一步利用这种联系,还介绍了一个对偶对象称为抛物面壳过程。通过这些增长过程,我们建立了由高密度Poisson样本生成的凸多胞体的适当尺度半径向量和支撑函数的局部泛函极限定理.我们表明,直接法导致明确的渐近表达式fidis的适当缩放的半径向量和支撑函数。广义抛物面生长过程,再加上一般技术的稳定理论,产生布朗单极限的缺陷体积和平均宽度泛函。最后,我们提供了明确的方差渐近性和中心极限定理的k-面和内禀体积泛函。

英文摘要:

Schreiber and Yukich [Ann. Probab. 36 (2008) 363-396] establish an asymptotic representation for random convex polytope geometry in the unit ball $\mathbb{B}^d, d\geq2$, in terms of the general theory of stabilizing functionals of Poisson point processes as well as in terms of generalized paraboloid growth processes. This paper further exploits this connection, introducing also a dual object termed the paraboloid hull process. Via these growth processes we establish local functional limit theorems for the properly scaled radius-vector and support functions of convex polytopes generated by high-density Poisson samples. We show that direct methods lead to explicit asymptotic expressions for the fidis of the properly scaled radius-vector and support functions. Generalized paraboloid growth processes, coupled with general techniques of stabilization theory, yield Brownian sheet limits for the defect volume and mean width functionals. Finally we provide explicit variance asymptotics and central limit theorems for the k-face and intrinsic volume functionals.

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