Výsledky vyhledávání - "Zsido, Laszlo"

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On the reduction theory of $W^{*}$-algebras by Hilbert modules

Autor: Fidaleo, Francesco, Zsido, Laszlo

We deal with the reduction theory of a $W^*$-algebra $M$ along a $W^*$-subalgebra $Z$ of the centre of $M$. This is done by using Hilbert modules naturally constructed by suitable spatial representations of the abelian $W^*$-algebra $Z$. We start wit

Externí odkaz: http://arxiv.org/abs/2409.15029

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On the equality of operator valued weights

Autor: Zsidó, László

G. K. Pedersen and M. Takesaki have proved in 1973 that if $\varphi$ is a faithful, semi-finite, normal weight on a von Neumann algebra $M\;\!$, and $\psi$ is a $\sigma^{\varphi}$-invariant, semi-finite, normal weight on $M\;\!$, equal to $\varphi$ o

Externí odkaz: http://arxiv.org/abs/2201.05681

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A negative minimum modulus theorem and surjectivity of ultradifferential operators

Autor: Zsidó, László

In 1979 I. Cior\u{a}nescu and L. Zsid\'o have proved a minimum modulus theorem for entire functions dominated by the restriction to the positive half axis of a canonical product of genus zero, having all roots on the positive imaginary axis and satis

Externí odkaz: http://arxiv.org/abs/2101.08329

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Quantitative BT-Theorem and automatic continuity for standard von Neumann algebras

Autor: Fidaleo, Francesco, Zsidó, László

We prove a general criterion for a von Neumann algebra $M$ in order to be in standard form. It is formulated in terms of an everywhere defined, invertible, antilinear, a priori not necessarily bounded operator, intertwining $M$ with its commutant $M'

Externí odkaz: http://arxiv.org/abs/1505.04910

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Maximal subalgebras of C*-algebras associated with periodic flows

Autor: Peligrad, Costel, Zsidó, László

Publikováno v: Journal of Functional Analysis, 262 (2012), 3626-3637

We find necessary and sufficient conditions for the subalgebra of analytic elements associated with a periodic C*-dynamical system to be a maximal norm-closed subalgebra. Our conditions are in terms of the Arveson spectrum of the action. We also desc

Externí odkaz: http://arxiv.org/abs/1112.0707

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Abelian Strict Approximation in AW*-Algebras and Weyl-von Neumann Type Theorems

Autor: D'Antoni, Claudio, Zsido, Laszlo

In this paper, for a C*-Algebra A with M = M(A) an AW*-algebra, or equivalently, for an essential, norm-closed, two-sided ideal A of an AW*-algebra M, we investigate the strict approximability of the elements of M from commutative C*- subalgebras of

Externí odkaz: http://arxiv.org/abs/math/0606302

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