کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5778664 | 1633780 | 2017 | 60 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Infinite random matrices & ergodic decomposition of finite and infinite Hua-Pickrell measures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
ریاضیات (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The ergodic decomposition of a family of Hua-Pickrell measures on the space of infinite Hermitian matrices is studied. By combining previous results of Borodin-Olshanski and our new results, we obtain the first complete description of the ergodic decomposition of Hua-Pickrell measures. First, we show that the ergodic components of any Hua-Pickrell probability measure have no Gaussian factors. Secondly, we show that the sequence of asymptotic eigenvalues of Hua-Pickrell random matrices is balanced in a certain sense and has a “principal value” which coincides with the parameter that reflects the presence of Dirac factor in an ergodic component. This allows us to identify the ergodic decomposition of any Hua-Pickrell probability with a certain determinantal point process with hypergeometric kernel as introduced by Borodin-Olshanski. Finally, we extend the aforesaid results to the case of infinite Hua-Pickrell measures. By using the theory of infinite determinantal measures recently introduced by A.I. Bufetov, we are able to identify the ergodic decomposition of Hua-Pickrell infinite measure with a certain infinite determinantal measure. This resolves a problem of Borodin and Olshanski.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Mathematics - Volume 308, 21 February 2017, Pages 1209-1268
Journal: Advances in Mathematics - Volume 308, 21 February 2017, Pages 1209-1268
نویسندگان
Yanqi Qiu,