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We investigate operator-valued monotone independence, a noncommutative version of independence for conditional expectation. First we introduce operator-valued monotone cumulants to clarify the whole theory and show the moment-cumulant…

Operator Algebras · Mathematics 2014-09-09 Takahiro Hasebe , Hayato Saigo

In a central lemma we characterize "generating functions" of certain functors on the category of algebraic non-commutative probability spaces. Special families of such generating functions correspond to "unital, associative universal…

Operator Algebras · Mathematics 2016-02-26 Sarah Manzel , Michael Schürmann

We define a product of algebraic probability spaces equipped with two states. This product is called a conditionally monotone product. This product is a new example of independence in non-commutative probability theory and unifies the…

Operator Algebras · Mathematics 2013-12-04 Takahiro Hasebe

We express classical, free, Boolean and monotone cumulants in terms of each other, using combinatorics of heaps, pyramids, Tutte polynomials and permutations. We completely determine the coefficients of these formulas with the exception of…

Combinatorics · Mathematics 2019-07-29 Octavio Arizmendi , Takahiro Hasebe , Franz Lehner , Carlos Vargas

Relations between moments and cumulants play a central role in both classical and non-commutative probability theory. The latter allows for several distinct families of cumulants corresponding to different types of independences: free,…

Probability · Mathematics 2023-05-16 A. Celestino , K. Ebrahimi-Fard , F. Patras , D. Perales Anaya

In the present paper we define the notion of generalized cumulants which gives a universal framework for commutative, free, Boolean, and especially, monotone probability theories. The uniqueness of generalized cumulants holds for each…

Probability · Mathematics 2015-05-13 Takahiro Hasebe , Hayato Saigo

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

The independent component model is a latent variable model where the components of the observed random vector are linear combinations of latent independent variables. The aim is to find an estimate for a transformation matrix back to…

Statistics Theory · Mathematics 2015-05-12 Joni Virta , Klaus Nordhausen , Hannu Oja

We define a new independence in non-commutative probability, called $\alpha$-freeness, with respect to a triplet of states. This concept unifies several independences in non-commutative probability, in particular, free, monotone,…

Operator Algebras · Mathematics 2022-12-22 Takahiro Hasebe

The contents are divided into two papers "The Monotone Cumulants" (arXiv:0907.4896) and "Conditionally monotone independence" (arXiv:0907.5473).

Probability · Mathematics 2009-07-31 Takahiro Hasebe

We introduce and study a new notion of non-commutative independence, called V-monotone independence, which can be viewed as an extension of the monotone independence of Muraki. We investigate the combinatorics of mixed moments of V-monotone…

Functional Analysis · Mathematics 2019-01-21 Adrian Dacko

Cumulants linearize convolution of measures. We use a formula of Good to define noncommutative cumulants in a very general setting.It turns out that the essential property needed is exchangeability of random variables. Roughly speaking the…

Combinatorics · Mathematics 2012-12-06 Franz Lehner

Free cumulants are multilinear functionals defined in terms of the moment functional with the use of the family of lattices of noncrossing partitions. In the univariate case, they can be identified with the coefficients of the Voiculescu…

Operator Algebras · Mathematics 2023-07-06 Romuald Lenczewski

Unlike classical and free independence, the boolean and monotone notions of independence lack of the property of independent constants. In the scalar case, this leads to restrictions for the central limit theorems, as observed by F.…

Probability · Mathematics 2021-09-14 Carlos Dias-Aguilera , Tulio Gaxiola , Jorge Santos , Carlos Vargas

We study how Boolean cumulants can be used in order to address operations with freely independent random variables, particularly in connection to the $*$-distribution of the product of two selfadjoint freely independent random variables,…

Operator Algebras · Mathematics 2020-09-24 Maxime Fevrier , Mitja Mastnak , Alexandru Nica , Kamil Szpojankowski

We address the question of the asymptotic description of random tensors that are local-unitary invariant, that is, invariant by conjugation by tensor products of independent unitary matrices. We consider both the mixed case of a tensor with…

Mathematical Physics · Physics 2025-04-04 Benoit Collins , Razvan Gurau , Luca Lionni

We revive the concept of Lambda-freeness of Mlotkowski, which describes a mixture of classical and free independence between algebras of random variables. In particular, we give a description of this in terms of cumulants; this will be…

Operator Algebras · Mathematics 2016-05-05 Roland Speicher , Janusz Wysoczanski

Boolean, free and monotone cumulants as well as relations among them, have proven to be important in the study of non-commutative probability theory. Quite notably, Boolean cumulants were successfully used to study free infinite…

Combinatorics · Mathematics 2021-11-05 Adrian Celestino , Kurusch Ebrahimi-Fard , Daniel Perales

The present paper introduces a modified version of cyclic-monotone independence which originally arose in the context of random matrices, and also introduces its natural analogy called cyclic-Boolean independence. We investigate formulas…

Probability · Mathematics 2024-05-31 Octavio Arizmendi , Takahiro Hasebe , Franz Lehner

Defant found that the relationship between a sequence of (univariate) classical cumulants and the corresponding sequence of (univariate) free cumulants can be described combinatorially in terms of families of binary plane trees called…

Combinatorics · Mathematics 2024-09-10 Colin Defant , Mitchell Lee
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