Results 11 to 20 of about 60,391 (204)

Generalized Fusion Frame in A Tensor Product of Hilbert Space [PDF]

open access: greenThe Journal of the Indian Mathematical Society, 2022
Generalized fusion frames and some of their properties in a tensor product of Hilbert spaces are studied. Also, the canonical dual g-fusion frame in a tensor product of Hilbert spaces is considered. The frame operator for a pair of g-fusion Bessel sequences in a tensor product of Hilbert spaces is presented.
Prasenjit Ghosh, T. K. Samanta
openalex   +3 more sources

On cluster systems of tensor product systems of Hilbert spaces [PDF]

open access: greenAnnals of Functional Analysis, 2015
It is known that the spatial product of two product systems is intrinsic. Here we extend this result by analyzing subsystems of the tensor product of product systems. A relation with cluster systems is established. In a special case, we show that the amalgamated product of product systems through strictly contractive units is independent of the choices
Mithun Mukherjee
  +9 more sources

Spectrum perturbations of operators on tensor products of Hilbert spaces [PDF]

open access: bronzeKyoto Journal of Mathematics, 2003
We investigate the spectrum perturbations and spectrum localization of a class of operators on a tensor product of separable Hilbert spaces. In particular, estimates for the spectral radius and norm of the resolvent are derived. Applications to partial integral and integrodifferential operators are also discussed.
Michael I. Gil’
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Controlled Frames in n-Hilbert Spaces and Their Tensor Products [PDF]

open access: greenIzvestiya Vysshikh Uchebnykh Zavedenii. Matematika
The concepts of controlled frame and its dual in n-Hilbert space have been introduced and then some of their properties are going to be discussed. Also, we study controlled frame in tensor product of n-Hilbert spaces and establish a relationship between controlled frame and bounded linear operator in tensor product of n-Hilbert spaces.
Prasenjit Ghosh, T. K. Samanta
  +5 more sources

Tensor products and the joint spectrum in Hilbert spaces [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1978
Given two complex Hilbert spaces X and Y and two commuting systems of linear continuous operators a = ( a 1 , … , a n ) a = ({a_1}, \ldots ,{a_n}) on X and b =
Zoia Ceauşescu, Florian-Horia Vasilescu
openalex   +3 more sources

Convergence and Decomposition for Tensor Products of Hilbert Space Operators [PDF]

open access: bronzeOperators and Matrices, 2008
It is shown that convergence of sequences of Hilbert space operators is preserved by tensor product and the converse holds in case of convergence to zero under the semigroup assumption. In particular, unlike ordinary product of operators, weak convergence is preserved by tensor product.
Carlos S. Kubrusly, Peter Vieira
openalex   +2 more sources

Unconditional bases in tensor products of Hilbert spaces [PDF]

open access: bronzeMATHEMATICA SCANDINAVICA, 2005
We prove that a tensor norm $\alpha$ (defined on tensor products of Hilbert spaces) is the Hilbert-Schmidt norm if and only if $\ell_2\otimes\cdots\otimes \ell_2$, endowed with the norm $\alpha$, has an unconditional basis. This extends a classical result of Kwapień and Pełczyński.
David Pérez-Garcı́a   +1 more
openalex   +5 more sources

Hilbert modules and tensor products of operator spaces [PDF]

open access: bronzeBanach Center Publications, 1997
The classical identification of the predual of B(H) (the algebra of all bounded operators on a Hilbert space H) with the projective operator space tensor product H⊗H is extended to the context of Hilbert modules over commutative von Neumann algebras.
Bojan Magajna
openalex   +3 more sources

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