Results 81 to 90 of about 50,290 (183)

Elementary equivalence and disintegration of tracial von Neumann algebras

open access: yesForum of Mathematics, Sigma
We prove an analog of the disintegration theorem for tracial von Neumann algebras in the setting of elementary equivalence rather than isomorphism, showing that elementary equivalence of two direct integrals of tracial factors implies fiberwise ...
David Gao, David Jekel
doaj   +1 more source

Jordan (α,β)-Derivations on Operator Algebras

open access: yesJournal of Function Spaces, 2017
Let A be a CSL subalgebra of a von Neumann algebra acting on a Hilbert space H. It is shown that any Jordan (α,β)-derivation on A is an (α,β)-derivation, where α,β are any automorphisms on A. Moreover, the nth power (α,β)-maps on A are investigated.
Quanyuan Chen   +2 more
doaj   +1 more source

Free analysis and planar algebras

open access: yes, 2014
We study 2-cabled analogs of Voiculescu's trace and free Gibbs states on Jones planar algebras. These states are traces on a tower of graded algebras associated to a Jones planar algebra.
Curran, S.   +2 more
core  

On the function TreH+itK

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We prove, for two free semicircularly distributed selfadjoint elements a and b in a type II1 von Neumann algebra with faithful trace τ, that the function t∈ℝ↦τ(exp(a+itb)) is positive definite.
Mark Fannes, Dénes Petz
doaj   +1 more source

On outer elements of the noncommutative Hp spaces

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2015
In the article let M be a von Neumann algebra equipped with a faithful normal normalized tracial state t, A be subdiagonal subalgebra of M. We transfer the results of [4] to the case p < 1.
A.T. Yerkex, T.N. Bekzhan
doaj  

The Jordan lattice completion and a note on injective envelopes and von Neumann algebras

open access: yes, 2018
The article associates two fundamental lattice constructions with each regular unital real ordered Banach space (function system). These are used to establish certain results in the theory of operator algebras, specifically relating the injective ...
Haag, Ulrich
core  

NONCOMMUTATIVE DE LEEUW THEOREMS

open access: yesForum of Mathematics, Sigma, 2015
Let $\text{H}$ be a subgroup of some locally compact group $\text{G}$. Assume that $\text{H}$ is approximable by discrete subgroups and that $\text{G}$ admits neighborhood bases which are almost invariant under conjugation by finite subsets of $\text{H}$.
MARTIJN CASPERS   +3 more
doaj   +1 more source

Lifting Invertibles in von Neumann Algebras [PDF]

open access: yesProceedings of the American Mathematical Society, 1991
Given B ( H ) \mathcal {B}(\mathcal {H}) , the algebra of bounded operators on a separable Hilbert space H \mathcal {H} , and K \mathcal {K} , the ideal of compact operators, it is a well-known fact that T
openaire   +1 more source

Factorization of operators on $C^*$-algebras

open access: yes, 1997
Let $A$ be a $C^*$-algebra. It is shown that every absolutely summing operator from $A$ into $\ell_2$ factors through a Hilbert space operator that belongs to the 4-Schatten- von Neumann class.
Randrianantoanina, Narcisse
core   +1 more source

On a Heisenberg-Type Uncertainty Principle in von Neumann Algebras

open access: yesMathematics
A refinement of the Heisenberg uncertainty principle has been proved by Luo using Wigner–Yanase information. Generalizations of this result have been proved by Yanagi and by other scholars for regular Quantum Fisher Information in the matrix case.
Paolo Gibilisco, Tommaso Isola
doaj   +1 more source

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