Detailed Record



Superconvergence and regularity of densities in free probability


Abstract The phenomenon of superconvergence, first observed in the central limit theorem of free probability, was subsequently extended to arbitrary limit laws for free additive convolution. We show that the same phenomenon occurs for the multiplicative versions of free convolution on the positive line and on the unit circle. We also show that a certain Hölder regularity, first demonstrated by Biane for the density of a free additive convolution with a semicircular law, extends to free (additive and multiplicative) convolutions with arbitrary freely infinitely divisible distributions.
Authors Hari Bercovici ORCID , Jiun-Chau Wang , Ping Zhong University of Wyoming
Journal Info American Mathematical Society | Transactions of the American Mathematical Society , vol: 376 , iss: 7 , pages: 4901 - 4956
Publication Date 3/20/2023
ISSN 0002-9947
TypeKeyword Image article
Open Access green Green Access
DOI https://doi.org/10.1090/tran/8891
KeywordsKeyword Image Conformal Invariance (Score: 0.450822)