<i>V<sub>a</sub></i>-Deformed Free Convolution

In this article, we study <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>V</mi><mi>a</mi></msub></semantics></math></inline-formula>-transformation of a...

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Main Authors: Fahad Alsharari, Raouf Fakhfakh
Format: Article
Language:English
Published: MDPI AG 2025-02-01
Series:Mathematics
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Online Access:https://www.mdpi.com/2227-7390/13/4/572
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author Fahad Alsharari
Raouf Fakhfakh
author_facet Fahad Alsharari
Raouf Fakhfakh
author_sort Fahad Alsharari
collection DOAJ
description In this article, we study <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>V</mi><mi>a</mi></msub></semantics></math></inline-formula>-transformation of a measure and of a convolution (denoted by <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><menclose notation="box"><mi>a</mi></menclose></mrow></semantics></math></inline-formula>) defined for <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>a</mi><mo>∈</mo><mi mathvariant="double-struck">R</mi></mrow></semantics></math></inline-formula>. We provide significant insights into the stability of the free Meixner family of probability measures under <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>V</mi><mi>a</mi></msub></semantics></math></inline-formula>-transformation. We show that the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>V</mi><mi>a</mi></msub></semantics></math></inline-formula>-transformation of measures (of convolutions) of any member of the free Meixner family remains in the free Meixner family. We also present some properties of the Marchenko–Pastur law in connection with <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><menclose notation="box"><mi>a</mi></menclose></mrow></semantics></math></inline-formula>-convolution. In addition, some new limit theorems are proved for the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><menclose notation="box"><mi>a</mi></menclose></mrow></semantics></math></inline-formula>-convolution incorporating both free and Boolean additive convolutions. Furthermore, some properties related to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>V</mi><mi>a</mi></msub></semantics></math></inline-formula>-deformed free cumulants are presented.
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spelling doaj-art-50d73009db3d4d2a879b3d165a904b812025-08-20T02:03:25ZengMDPI AGMathematics2227-73902025-02-0113457210.3390/math13040572<i>V<sub>a</sub></i>-Deformed Free ConvolutionFahad Alsharari0Raouf Fakhfakh1Department of Mathematics, College of Science, Jouf University, P.O. Box 2014, Sakaka 72311, Saudi ArabiaDepartment of Mathematics, College of Science, Jouf University, P.O. Box 2014, Sakaka 72311, Saudi ArabiaIn this article, we study <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>V</mi><mi>a</mi></msub></semantics></math></inline-formula>-transformation of a measure and of a convolution (denoted by <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><menclose notation="box"><mi>a</mi></menclose></mrow></semantics></math></inline-formula>) defined for <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>a</mi><mo>∈</mo><mi mathvariant="double-struck">R</mi></mrow></semantics></math></inline-formula>. We provide significant insights into the stability of the free Meixner family of probability measures under <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>V</mi><mi>a</mi></msub></semantics></math></inline-formula>-transformation. We show that the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>V</mi><mi>a</mi></msub></semantics></math></inline-formula>-transformation of measures (of convolutions) of any member of the free Meixner family remains in the free Meixner family. We also present some properties of the Marchenko–Pastur law in connection with <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><menclose notation="box"><mi>a</mi></menclose></mrow></semantics></math></inline-formula>-convolution. In addition, some new limit theorems are proved for the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><menclose notation="box"><mi>a</mi></menclose></mrow></semantics></math></inline-formula>-convolution incorporating both free and Boolean additive convolutions. Furthermore, some properties related to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>V</mi><mi>a</mi></msub></semantics></math></inline-formula>-deformed free cumulants are presented.https://www.mdpi.com/2227-7390/13/4/572<i>V<sub>a</sub></i>-transformationMarchenko–Pastur lawvariance functionCauchy–Stieltjes transform
spellingShingle Fahad Alsharari
Raouf Fakhfakh
<i>V<sub>a</sub></i>-Deformed Free Convolution
Mathematics
<i>V<sub>a</sub></i>-transformation
Marchenko–Pastur law
variance function
Cauchy–Stieltjes transform
title <i>V<sub>a</sub></i>-Deformed Free Convolution
title_full <i>V<sub>a</sub></i>-Deformed Free Convolution
title_fullStr <i>V<sub>a</sub></i>-Deformed Free Convolution
title_full_unstemmed <i>V<sub>a</sub></i>-Deformed Free Convolution
title_short <i>V<sub>a</sub></i>-Deformed Free Convolution
title_sort i v sub a sub i deformed free convolution
topic <i>V<sub>a</sub></i>-transformation
Marchenko–Pastur law
variance function
Cauchy–Stieltjes transform
url https://www.mdpi.com/2227-7390/13/4/572
work_keys_str_mv AT fahadalsharari ivsubasubideformedfreeconvolution
AT raouffakhfakh ivsubasubideformedfreeconvolution