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Compositions of mappings of infinitely divisible distributions with applications to finding the limits of some nested subclasses

   
@article{ECP1557,
	author = {Makoto Maejima and Yohei Ueda},
	title = {Compositions of mappings of infinitely divisible distributions with applications to finding the limits of some nested subclasses},
	journal = {Electron. Commun. Probab.},
	fjournal = {Electronic Communications in Probability},
	volume = {15},
	year = {2010},
	keywords = {infinitely divisible distribution on \$\{\mathbb R\}^d\$, stochastic integral mapping, composition of mappings, limit of nested subclasses},
	abstract = {Let $\{X_t^{(\mu)},t\ge 0\}$ be a L\'evy process on $R^d$ whose distribution at time 1 is $\mu$, and let $f$ be a nonrandom measurable function on $(0, a), 0 < a\leq \infty$. Then we can define a mapping $\Phi_f(\mu)$ by the law of $\int_0^af(t)dX_t^{(\mu)}$, from $\mathfrak D(\Phi_f)$ which is the totality of $\mu\in I(R^d)$  such that the stochastic integral $\int_0^af(t)dX_t^{(\mu)}$ is definable, into a class of infinitely divisible distributions. For $m\in N$, let $\Phi_f^m$ be the $m$ times composition of $\Phi_f$ itself. Maejima and Sato (2009) proved that the limits $\bigcap_{m=1}^\infty\Phi^m_f(\mathfrak D(\Phi^m_f))$ are the same for several known $f$'s. Maejima and Nakahara (2009) introduced more general $f$'s. In this paper, the limits $\bigcap_{m=1}^\infty\Phi^m_f(\mathfrak D(\Phi^m_f))$ for such general $f$'s are investigated by using the idea of compositions of suitable mappings of infinitely divisible distributions.},
	pages = {no. 21, 227-239},
	issn = {1083-589X},
	doi = {10.1214/ECP.v15-1557},    
        url = {http://ecp.ejpecp.org/article/view/1557}}