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首页> 外文期刊>Journal of the Mathematical Society of Japan >Short time kernel asymptotics for Young SDE by means of Watanabe distribution theory
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Short time kernel asymptotics for Young SDE by means of Watanabe distribution theory

机译:基于渡边分布理论的年轻SDE的短时核渐近性

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摘要

In this paper we study short time asymptotics of a density function of the solution of a stochastic differential equation driven by fractional Brownian motion with Hurst parameter H (1/2 < H < 1) when the coefficient vector fields satisfy an ellipticity condition at the starting point. We prove both on-diagonal and off-diagonal asymptotics under mild additional assumptions. Our main tool is Malliavin calculus, in particular, Watanabe's theory of generalized Wiener functional.
机译:在本文中,我们研究了当系数矢量场在开始时满足椭圆率条件时,由分数布朗运动驱动的具有Hurst参数H(1/2 <H <1)的随机微分方程解的密度函数的短时渐近渐近性点。在温和的附加假设下,我们证明了对角线和对角线的渐近性。我们的主要工具是Malliavin微积分,特别是Watanabe的广义Wiener函数理论。

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