Results 121 to 130 of about 3,060 (235)
Decomposable approximations of nuclear C*-algebras [PDF]
We show that nuclear <i>C</i><sup>*</sup>-algebras have a refined version of the completely positive approximation property, in which the maps that approximately factorize through finite dimensional algebras are convex ...
Kirchberg, Eberhard +5 more
core +1 more source
Hopf-von Neumann algebra bicrossproducts, Kac algebra bicrossproducts, and the Classical Yang-Baxter Equations [PDF]
Two groups G1, G2 are said to be a matched pair if each acts on the space of the other and these actions, (α, β) say, obey a certain compatibility condition.
Majid, Shahn
core +1 more source
On outer elements of the noncommutative Hp spaces
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
NONCOMMUTATIVE DE LEEUW THEOREMS
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
Lipschitz Algebras and Derivations of von Neumann Algebras
Analogous to the duality between a locally compact space \(X\) and the commutative \(C^*\)-algebra, \(C_0(X)\), of continuous functions on \(X\) that vanish at infinity, a bounded metric space \(X\) corresponds to the Lipschitz algebra, \(\text{Lip}(X)\), of Lipschitz functions.
openaire +2 more sources
Rigidity for von Neumann Algebras and Their Invariants [PDF]
ICM 2010 Proceedings ...
openaire +3 more sources
Non injectivity of the q-deformed von Neumann algebra [PDF]
We prove that the von Neumann algebra generated by q-gaussians is not injective as soon as the dimension of the underlying Hilbert space is greater than 1. Our approach is based on a vector valued Khintchine type inequality for Wick products.
Nou, Alexandre
core +1 more source
On a Heisenberg-Type Uncertainty Principle in von Neumann Algebras
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
On the operator equation α+α−1=β+β−1
Let α,β be ∗-automorphisms of a von Neumann algebra M satisfying the operator equation α+α−1=β+β−1. In this paper we use new techniques (which are useful in noncommutative situations as well) to provide alternate proofs of the results:- If α,β commute ...
A. B. Thaheem
doaj +1 more source
L1-space for a positive operator affiliated with von Neumann algebra [PDF]
© 2016 Springer International PublishingIn this paper we suggest an approach for constructing an (Formula presented.)-type space for a positive selfadjoint operator affiliated with von Neumann algebra. For such operator we introduce a seminorm, and prove
Novikov A.
core

