Gaussian Volterra processes with power-type kernels. Part II
Open Access
- 5 July 2022
- journal article
- research article
- Published by VTeX in Modern Stochastics: Theory and Applications
- Vol. 9 (4), 431-452
- https://doi.org/10.15559/22-vmsta211
Abstract
Publisher: VTeX - Solutions for Science Publishing, Journal: Modern Stochastics - Theory and Applications, Title: Gaussian Volterra processes with power-type kernels. Part II, Authors: Yuliya Mishura, Sergiy Shklyar , In this paper the study of a three-parametric class of Gaussian Volterra processes is continued. This study was started in Part I of the present paper. The class under consideration is a generalization of a fractional Brownian motion that is in fact a one-parametric process depending on Hurst index H. On the one hand, the presence of three parameters gives us a freedom to operate with the processes and we get a wider application possibilities. On the other hand, it leads to the need to apply rather subtle methods, depending on the intervals where the parameters fall. Integration with respect to the processes under consideration is defined, and it is found for which parameters the processes are differentiable. Finally, the Volterra representation is inverted, that is, the representation of the underlying Wiener process via Gaussian Volterra process is found. Therefore, it is shown that for any indices for which Gaussian Volterra process is defined, it generates the same flow of sigma-fields as the underlying Wiener process – the property that has been used many times when considering a fractional Brownian motion.Keywords
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