Continuity in a pathwise sense with respect to the coefficients of solutions of stochastic differential equations

被引:1
|
作者
Knudsen, TS [1 ]
机构
[1] TECH UNIV DENMARK,DEPT MATH,DK-2800 LYNGBY,DENMARK
关键词
stochastic differential equations; random field of solutions; pathwise continuity wrt coefficients; p-step nilpotent Lie algebras; shuffle product;
D O I
10.1016/S0304-4149(97)00024-0
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
For stochastic differential equations (SDEs) of the form dX(t) = b(X)(t)) dt + sigma(X(t))dW(t) where b and sigma are Lipschitz continuous, it is shown that if we consider a fixed sigma is an element of C-5, bounded and with bounded derivatives, the random field of solutions is pathwise locally Lipschitz continuous with respect to b when the space of drift coefficients is the set of Lipschitz continuous functions of sublinear growth endowed with the sup-norm. Furthermore, it is shown that this result does not hold if we interchange the role of b and c. However for SDEs where the coefficient vector fields commute suitably we show continuity with respect to the sup-norm on the coefficients and a number of their derivatives.
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页码:155 / 179
页数:25
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