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arXiv 1706.07579math.PR
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具有紧状态空间的仿射过程

Affine processes with compact state space

Paul Krühner, Martin Larsson

摘要:

仿射过程在广泛的应用中是普遍存在的,其行为关键取决于状态空间的选择。我们研究的情况下,状态空间是紧凑的,并证明特别是:(一)没有扩散是可能的;(二)跳跃是可能的,并执行网格状结构的状态空间;(三)跳跃组件可以馈入漂移组件,但反之亦然。利用我们的主要结构定理,我们对所有具有紧状态空间的二元仿射过程进行了分类。与经典情形不同,具有紧状态空间的仿射过程的特征函数可能为零,即使在非常简单的情形下也是如此。

英文摘要:

The behavior of affine processes, which are ubiquitous in a wide range of applications, depends crucially on the choice of state space. We study the case where the state space is compact, and prove in particular that (i) no diffusion is possible; (ii) jumps are possible and enforce a grid-like structure of the state space; (iii) jump components can feed into drift components, but not vice versa. Using our main structural theorem, we classify all bivariate affine processes with compact state space. Unlike the classical case, the characteristic function of an affine process with compact state space may vanish, even in very simple cases.

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。

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