Abstract
Let Γ be Euler's Gamma function. We prove that, for all α ≠ 0, β > 0, γ > 0, δ > 0, the function (Γ(γ + iαz)/Γ(γ)βi α z) δ, z ∈ R 1, is a self-decomposable characteristic function from the Thorin class \(\mathcal{T}_e \) and derive its explicit canonical form. Similarly to [1], we also describe several classes of Lévy-type stochastic processes related to Γ.
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REFERENCES
B. Grigelionis, Generalized z-distributions and related stochastic processes, Lith. Math. J., 41(3), 239–251 (2001).
K. Sato, Self-similar processes with independent increments, Probab. Theory Related Fields, 89, 285–300 (1991).
S. K. Bar-Lev, D. Bshouty, and G. Letac, Natural exponential families and self-decomposability, Statist. Probab. Lett., 13, 147–152 (1992).
S. G. Maloshevskii, Infinite divisibility of a certain family of distributions, Teor. Funktsii Funktsional. Anal. i Prilozhen., 16, 212–214 (1972).
E. Lucacs, Characteristics Functions, 2nd edn, Charles Griffin, London (1970).
J. V. Linnik and I. V. Ostrovskii, Decomposition of Random Variables and Vectors, Amer. Math. Soc., Providence, RI (1977).
K. Sato, Lévy Processes and Infinitely Divisible Distributions, Cambridge University Press (1999).
P. Embrechts, C. Klüppelberg, and T. Mikosch, Modelling Extremal Events for Insurance and Finance, Springer, Heidelberg (1997).
E. B. Dynkin, Necessary and sufficient statistics for a family of probability distributions, Uspekhi Mat. Nauk (N.S.), 6(1), 68–90 (1951).
D. Lindley, Fiducial distributions and Bayes’ theorem, J. Roy. Statist. Soc., Ser. B, 20, 102–107 (1958).
T. S. Ferguson, Location and scale parameters in exponential families of distributions, Ann. Math. Statist., 33, 986–1009 (1962). Correction, Ann. Math. Statist., 34, 1603 (1963).
O. Thorin, An extension of the notion of a generalized Γ-convolution, Scand. Actuarial J., 141–149 (1978).
L. Bondesson, Generalized Gamma Convolutions and Related Classes of Distributions and Densities, Lecture Notes in Statistics, 73, Springer, New York (1992).
B. Grigelionis, On mixed exponential processes and martingales, Lith. Math. J., 38(1), 45–58 (1998).
O. E. Barndorff-Nielsen, Processes of normal inverse Gaussian type, Finance and Stochastics, 2, 41–68 (1998).
B. Grigelionis, Processes of Meixner type, Lith. Math. J., 39(1), 33–41 (1999).
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Grigelionis, B. On the Self-Decomposability of Euler's Gamma Function. Lithuanian Mathematical Journal 43, 295–305 (2003). https://doi.org/10.1023/A:1026141402811
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DOI: https://doi.org/10.1023/A:1026141402811