Results 1 to 10 of about 62,884 (217)

Introduction of Frame in Tensor Product of $n$-Hilbert Spaces [PDF]

open access: greenSahand Communications in Mathematical Analysis, 2021
We study the concept of frame in tensor product of  $n$-Hilbert spaces as tensor product of  $n$-Hilbert spaces is again an  $n$-Hilbert space. We generalize some of the known results about bases to frames in this new Hilbert space.
Prasenjit Ghosh, Tapas Samanta
doaj   +6 more sources

WOVEN FRAMES IN TENSOR PRODUCT OF HILBERT SPACES [PDF]

open access: greenJournal of Algebraic Systems, 2020
‎‎The tensor product is the fundemental ingredient for extending one-dimensional techniques of filtering and compression in signal preprocessing to higher dimensions‎.
S. Afshar Jahanshahi, A. Ahmadi
doaj   +3 more sources

Numerical range of tensor product of operators in semi-Hilbert spaces

open access: goldKuwait Journal of Science
Let A and B be two positive bounded linear operators acting on the complex Hilbert spaces H and K, respectively. In this paper, we study the (A⊗B)-numerical range WA⊗B(T⊗S) of the tensor product T⊗S for two bounded linear operators T and S on H and K ...
Najla Altwaijry   +3 more
doaj   +3 more sources

A Max-Flow Approach to Random Tensor Networks [PDF]

open access: yesEntropy
The entanglement entropy of a random tensor network (RTN) is studied using tools from free probability theory. Random tensor networks are simple toy models that help in understanding the entanglement behavior of a boundary region in the anti-de Sitter ...
Khurshed Fitter   +2 more
doaj   +2 more sources

Detection of Interaction Effects in a Nonparametric Concurrent Regression Model [PDF]

open access: yesEntropy, 2023
Many methods have been developed to study nonparametric function-on-function regression models. Nevertheless, there is a lack of model selection approach to the regression function as a functional function with functional covariate inputs.
Rui Pan, Zhanfeng Wang, Yaohua Wu
doaj   +2 more sources

Frames and bases in tensor products of Hilbert spaces and Hilbert C*-modules [PDF]

open access: yes, 2007
In this article, we study tensor product of Hilbert $C^*$-modules and Hilbert spaces. We show that if $E$ is a Hilbert $A$-module and $F$ is a Hilbert $B$-module, then tensor product of frames (orthonormal bases) for $E$ and $F$ produce frames ...
Khosravi, Amir, Khosravi, Behrooz
core   +2 more sources

Quantum mereology in finite quantum mechanics

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2021
Any Hilbert space with composite dimension can be factored into a tensor product of smaller Hilbert spaces. This allows us to decompose a quantum system into subsystems.
Vladimir V. Kornyak
doaj   +1 more source

Wormholes, geons, and the illusion of the tensor product

open access: yesJournal of High Energy Physics, 2023
In this paper I argue that the Hilbert space of states of a holographic, traversable wormhole does not factorize into the tensor product of the boundary Hilbert spaces.
Adam Bzowski
doaj   +1 more source

Tensor dimensionality reduction via mode product and HSIC

open access: yesIET Image Processing, 2021
Tensor dimensionality reduction (TDR) is a hot research topic in machine learning, which learns data representations by preserving the original data structure while avoiding convert samples into vectors and solving the problem of the curse of ...
Guo Niu, Zhengming Ma
doaj   +1 more source

Bipartite Mixed States of Infinite-Dimensional Systems are Generically Nonseparable [PDF]

open access: yes, 1999
Given a bipartite quantum system represented by a tensor product of two Hilbert spaces, we give an elementary argument showing that if either component space is infinite-dimensional, then the set of nonseparable density operators is trace-norm dense in ...
A. Peres   +26 more
core   +2 more sources

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