共 20 条
FOUR MOMENTS THEOREMS ON MARKOV CHAOS
被引:7
|作者:
Bourguin, Solesne
[1
]
Campese, Simon
[2
]
Leonenko, Nikolai
[3
]
Taqqu, Murad S.
[1
]
机构:
[1] Boston Univ, Dept Math & Stat, 111 Cummington Mall, Boston, MA 02215 USA
[2] Univ Luxembourg, Math Res Unit, 6 Ave Fonte, L-4364 Esch Sur Alzette, Luxembourg
[3] Cardiff Univ, Sch Math, Senghennydd Rd, Cardiff CF24 4AG, S Glam, Wales
基金:
澳大利亚研究理事会;
关键词:
Markov operator;
diffusion generator;
Gamma calculus;
Pearson distributions;
Stein's method;
limit theorems;
CENTRAL LIMIT-THEOREMS;
DIFFUSIONS;
D O I:
10.1214/18-AOP1287
中图分类号:
O21 [概率论与数理统计];
C8 [统计学];
学科分类号:
020208 ;
070103 ;
0714 ;
摘要:
We obtain quantitative four moments theorems establishing convergence of the laws of elements of a Markov chaos to a Pearson distribution, where the only assumption we make on the Pearson distribution is that it admits four moments. These results are obtained by first proving a general carre du champ bound on the distance between laws of random variables in the domain of a Markov diffusion generator and invariant measures of diffusions, which is of independent interest, and making use of the new concept of chaos grade. For the heavy-tailed Pearson distributions, this seems to be the first time that sufficient conditions in terms of (finitely many) moments are given in order to converge to a distribution that is not characterized by its moments.
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页码:1417 / 1446
页数:30
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