arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1402.2620math.PRmath.STstat.TH
收藏

可加Wiener场的边界不相交性

Boundary Non-Crossings of Additive Wiener Fields

Enkelejd Hashorva, Yuliya Mishura

摘要:

设$W_i=\{W_i(t), t\in \mathbb{R}_+\}, i=1,2$是两个Wiener过程,$W_3=\{W_3(\mathbf{t}), \mathbf{t}\in \mathbb{R}_+^2\}$是两参数布朗单,三个过程相互独立.我们推导出边界不交叉概率$$P_f=P\{W_1(t_1)+W_2(t_2)+W_3(\mathbf{t})+h(\mathbf{t})\leq u(\mathbf{t}), \mathbf{t}\in\mathbb{R}_+^2\},$$的上界和下界,其中$h, u: \mathbb{R}_+^2\rightarrow \mathbb{R}_+$是两个可测函数。进一步证明了对于大趋势函数$γf>0$,当$γ\to \infty$渐近时,$\ln P_{γf}$与$\ln P_{γ\underline{f}}$相同,其中$\underline{f}$是$f$在$W$的再生核Hilbert空间的某个闭凸集上的投影.事实证明,我们的方法也适用于可加性布朗枕。

英文摘要:

Let $W_i=\{W_i(t), t\in \mathbb{R}_+\}, i=1,2$ be two Wiener processes and $W_3=\{W_3(\mathbf{t}), \mathbf{t}\in \mathbb{R}_+^2\}$ be a two-parameter Brownian sheet, all three processes being mutually independent. We derive upper and lower bounds for the boundary non-crossing probability $$P_f=P\{W_1(t_1)+W_2(t_2)+W_3(\mathbf{t})+h(\mathbf{t})\leq u(\mathbf{t}), \mathbf{t}\in\mathbb{R}_+^2\},$$ where $h, u: \mathbb{R}_+^2\rightarrow \mathbb{R}_+$ are two measurable functions. We show further that for large trend functions $γf>0$ asymptotically when $γ\to \infty$ we have that $\ln P_{γf}$ is the same as $\ln P_{γ\underline{f}}$ where $\underline{f}$ is the projection of $f$ on some closed convex set of the reproducing kernel Hilbert Space of $W$. It turns out that our approach is applicable also for the additive Brownian pillow.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑