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In this paper, Lukacs type characterization of Marchenko-Pastur distribution in free probability is studied. We prove that for free X and Y, if conditional moments of order 1 and −1 of (X + Y)−1/2 X(X + Y)−1/2 given X + Y are constant, then X and Y follow the Marchenko-Pastur distribution.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
137--145
Opis fizyczny
Bibliogr. 15 poz.
Twórcy
autor
- Faculty of Mathematics and Information Science, Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warszawa, Poland
Bibliografia
- [1] M. Bożejko and W. Bryc, On a class of free Lévy laws related to a regression problem, J. Funct. Anal. 236 (1) (2006), pp. 59-77.
- [2] M. Bożejko, M. Leinert, and R. Speicher, Convolution and limit theorems for conditionally free random variables, Pacific J. Math. 175 (2) (1996), pp. 357-388.
- [3] W. Ejsmont, Laha-Lukacs properties of some free processes, Electron. Comm. Probab. 17 (13) (2012), pp. 1-8.
- [4] W. Ejsmont, Characterizations of some free random variables by properties of conditional moments of third degree polynomials, J. Theoret. Probab. 27 (3) (2014), pp. 915-931.
- [5] R. G. Laha and E. Lukacs, On a problem connected with quadratic regression, Biometrika 47 (1960), pp. 335-343.
- [6] E. Lukacs, A characterization of the gamma distribution, Ann. Math. Statist. 26 (1955), pp. 319-324.
- [7] A. Nica, R-transforms of free joint distributions and non-crossing partitions, J. Funct. Anal. 135 (2) (1996), pp. 271-296.
- [8] A. Nica and R. Speicher, Lectures on the Combinatorics of Free Probability, London Math. Soc. Lecture Note Ser., Vol. 335, Cambridge University Press, Cambridge 2006.
- [9] K. Szpojankowski, Dual Lukacs regressions of negative orders for non-commutative variables, Infin. Dimens. Anal. Quantum Probab. Relat. Top. 17 (3) (2014), 1450021.
- [10] K. Szpojankowski, On the Lukacs property for free random variables, http://arxiv.org/abs/1403.5300, 2014.
- [11] K. Szpojankowski and J. Wesołowski, Dual Lukacs regressions for non-commutative variables, J. Funct. Anal. 266 (1) (2014), pp. 36-54.
- [12] M. Takesaki, Theory of Operator Algebras. I, Encyclopaedia Math. Sci., Vol 124, Springer, Berlin 2002.
- [13] D. V. Voiculescu, Addition of certain noncommuting random variables, J. Funct. Anal. 66 (3) (1986), pp. 323-346.
- [14] D. V. Voiculescu, K. J. Dykema, and A. Nica, Free Random Variables, CRM Monogr. Ser., Vol. 1, American Mathematical Society, Providence, RI, 1992.
- [15] J. Wesołowski, A constant regression characterization of the gamma law, Adv. in Appl. Probab. 22 (2) (1990), pp. 488-490.
Uwagi
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).
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Bibliografia
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