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arXiv math/0606601math.PRmath.AP
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Ito过程的泛函表示及其首次出时

Representation of functionals of Ito processes and their first exit times

Nikolai Dokuchaev

摘要:

得到了非马氏过程泛函及其首次出有界域时的表示定理。这些泛函表示通过向后抛物伊藤方程的解决方案。作为应用的一个例子,导出了Ito过程在边界被杀死的条件概率密度函数的前向Kolmogorov方程的类似形式。此外,建立了有界区域上SPDE的最大值原理和收缩性质。

英文摘要:

The representation theorem is obtained for functionals of non-Markov processes and their first exit times from bounded domains. These functionals are represented via solutions of backward parabolic Ito equations. As an example of applications, analogs of forward Kolmogorov equations are derived for conditional probability density functions of Ito processes being killed on the boundary. In addition, a maximum principle and a contraction property are established for SPDEs in bounded domains.

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