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Related papers: An alternating moment condition for bi-freeness

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In this paper, we introduce the notion of conditionally bi-free independence in an amalgamated setting. We define operator-valued conditionally bi-multiplicative pairs of functions and construct operator-valued conditionally bi-free moment…

Operator Algebras · Mathematics 2019-02-08 Yinzheng Gu , Paul Skoufranis

In this paper, we develop the theory of bi-freeness in an amalgamated setting. We construct the operator-valued bi-free cumulant functions, and show that the vanishing of mixed cumulants is necessary and sufficient for bi-free independence.…

Operator Algebras · Mathematics 2015-06-08 Ian Charlesworth , Brent Nelson , Paul Skoufranis

In this article, the notion of bi-monotonic independence is introduced as an extension of monotonic independence to the two-faced framework for a family of pairs of algebras in a non-commutative space. The associated cumulants are defined…

Operator Algebras · Mathematics 2021-06-25 Yinzheng Gu , Takahiro Hasebe , Paul Skoufranis

We determine a set of necessary conditions on a partition-indexed family of complex numbers to be the "highest coefficients" of a positive and symmetric multi-faced universal product; i.e. the product associated with a multi-faced version…

Functional Analysis · Mathematics 2024-06-17 Malte Gerhold , Philipp Varšo

We consider a notion of bi-freeness for systems of non-commutative random variables with two faces, one of left variables and another of right variables. This includes bi-free convolution operations, bi-free cumulants and the bi-free…

Operator Algebras · Mathematics 2015-06-16 Dan-Virgil Voiculescu

In this paper, we examine how various notions of independence in non-commutative probability theory arise in bi-free probability. We exhibit how Boolean and monotone independence occur from bi-free pairs of faces and establish a Kac/Loeve…

Operator Algebras · Mathematics 2016-09-08 Paul Skoufranis

In this paper, we develop the notion of free-Boolean independence in an amalgamation setting. We construct free-Boolean cumulants and show that the vanishing of mixed free-Boolean cumulants is equivalent to our free-Boolean independence…

Operator Algebras · Mathematics 2017-12-08 Weihua Liu , Ping Zhong

We compute the generating series for the simplest class of bi-free cumulants, beyond free cumulants, the two-bands bi-free cumulants of a pair of a left and a right variable. We also consider two-faced systems with a commutation condition…

Operator Algebras · Mathematics 2013-08-12 Dan-Virgil Voiculescu

We define bi-monotone independence, prove a bi-monotone central limit theorem and use it to study the distribution of bi-monotone Brownian motion, which is defined as the two-dimensional operator process with monotone and antimonotone…

Operator Algebras · Mathematics 2023-11-15 Malte Gerhold

We investigate possible generalizations of the de Finetti theorem to bi-free probability. We first introduce a twisted action of the quantum permutation groups corresponding to the combinatorics of bi-freeness. We then study properties of…

Probability · Mathematics 2015-07-22 Amaury Freslon , Moritz Weber

Given a family of rotationally symmetric compact manifolds indexed by the dimension and a weight function, the goal of this paper is to investigate the cut-off phenomenon for the Brownian motions on this family. We provide a class of…

Probability · Mathematics 2024-10-01 Koléhè Coulibaly-Pasquier , Marc Arnaudon , Laurent Miclo

In this paper, we derive explicit expressions for the moments and for the mixed moments of the compression of a free unitary Brownian motion by a free projection. While the moments of this non-normal operator are readily derived using…

Operator Algebras · Mathematics 2021-08-24 Nizar Demni , Tarek Hamdi

We find a sufficient condition to imprint the single-mode bosonic phase-space nonclassicality onto a bipartite state as modal entanglement and vice versa using an arbitrary beam splitter. Surprisingly, the entanglement produced or detected…

Quantum Physics · Physics 2016-06-29 H. Gholipour , F. Shahandeh

It is well known that free independence is equivalent to the vanishing of mixed free cumulants. The purpose of this short note is to build free products of $*$-probability spaces using this as the definition of freeness and relying on free…

Operator Algebras · Mathematics 2025-02-10 Arup Bose , Soumendu Sundar Mukherjee

We demonstrate that the notions of bi-free independence and combinatorial-bi-free independence of two-faced families are equivalent using a diagrammatic view of bi-non-crossing partitions. These diagrams produce an operator model on a Fock…

Operator Algebras · Mathematics 2019-08-15 Ian Charlesworth , Brent Nelson , Paul Skoufranis

The first part of this paper is devoted to the Brown measure of the product of the free unitary Brownian motion by an arbitrary free non negative operator. Our approach follows the one recently initiated by Driver-Hall-Kemp though there are…

Spectral Theory · Mathematics 2020-10-02 Nizar Demni , Tarek Hamdi

New formulas for the moments about zero of the Non-central Chi-Squared and the Non-central Beta distributions are achieved by means of novel approaches. The mixture representation of the former model and a new expansion of the ascending…

Statistics Theory · Mathematics 2021-07-15 Carlo Orsi

Up to isomorphism, there exist two non-isomorphic two-element monoids. We show that the identities of the free product of every pair of such monoids admit no finite basis.

Group Theory · Mathematics 2019-01-03 Mikhail Volkov

In this paper, an analogue of matrix models from free probability is developed in the bi-free setting. A bi-matrix model is not simply a pair of matrix models, but a pair of matrix models where one element in the pair acts by…

Operator Algebras · Mathematics 2019-02-08 Paul Skoufranis

The asymptotic freeness of independent unitarily invariant $N\times N$ random matrices holds in expectation up to $O(N^{-2})$. An already known consequence is the infinitesimal freeness in expectation. We put in evidence another consequence…

Probability · Mathematics 2022-05-05 Guillaume Cébron , Antoine Dahlqvist , Franck Gabriel
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