Lower bounds for densities of uniformly elliptic random variables on Wiener space

Lower bounds for densities of uniformly elliptic random variables on Wiener space
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维纳空间上均匀椭圆随机变量的密度下界

DOI:
10.1007/s00440-003-0272-4
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发表时间:
2003
期刊:
影响因子:
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通讯作者:
A. Kohatsu
A. Kohatsu
中科院分区:
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文献类型:
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作者:
A. Kohatsu

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在本文中,我们推广了 Kusuoka 和 Stroock 获得的均匀椭圆扩散过程的下界估计。我们在维纳空间上定义了均匀椭圆随机变量的概念,并表明利用这个定义可以证明高斯型密度的下界估计。我们将我们的结果应用于扩散系数均匀椭圆率假设下的随机热方程的情况。
In this article, we generalize the lower bound estimates for uniformly elliptic diffusion processes obtained by Kusuoka and Stroock. We define the concept of uniform elliptic random variable on Wiener space and show that with this definition one can prove a lower bound estimate of Gaussian type for its density. We apply our results to the case of the stochastic heat equation under the hypothesis of unifom ellipticity of the diffusion coefficient.
DOI: 10.1007/978-1-4757-2437-0
发表时间: 1995-05
影响因子: 4
作者:
D. Nualart
通讯作者: D. Nualart