A calculus on L\'evy exponents and selfdecomposability on Banach spaces
A calculus on L\'evy exponents and selfdecomposability on Banach spaces
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Levy 指数的微积分和 Banach 空间的自分解性
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发表时间:
2008
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通讯作者:
Z. Jurek
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作者:
Z. Jurek
In infinite dimensional Banach spaces there is no complete characterization of the L\'evy exponents of infinitely divisible probability measures. Here we propose \emph{a calculus on L\'evy exponents} that is derived from some random integrals. As a consequence we prove that \emph{each} selfdecomposable measure can by factorized as another selfdecomposable measure and its background driving measure that is s-selfdecomposable. This complements a result from the paper of Iksanov-Jurek-Schreiber in the Annals of Probability \textbf{32}, 2004.}