Results 31 to 40 of about 4,977,477 (349)

Metrics on diagram groups and uniform embeddings in a Hilbert space [PDF]

open access: yes, 2005
We give first examples of finitely generated groups having an intermediate, with values in (0,1), Hilbert space compression (which is a numerical parameter measuring the distortion required to embed a metric space into Hilbert space).
Arzhantseva, Goulnara   +2 more
core   +1 more source

Quasi-inner product spaces of quasi-Sobolev spaces and their completeness

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2018
      Sequences spaces  , m  ,  p  have called quasi-Sobolev spaces were  introduced   by Jawad . K. Al-Delfi in 2013  [1]. In this  paper , we deal with notion of  quasi-inner product  space  by using concept of  quasi-normed  space which is ...
Jawad Kadhim Khalaf Al-Delfi
doaj   +1 more source

The Characterization and Stability of g-Riesz Frames for Super Hilbert Space

open access: yesJournal of Function Spaces, 2015
G-frames and g-Riesz frames as generalized frames in Hilbert spaces have been studied by many authors in recent years. The super Hilbert space has a certain advantage compared with the Hilbert space in the field of studying quantum mechanics.
Dingli Hua, Yongdong Huang
doaj   +1 more source

Flows in Infinite-Dimensional Phase Space Equipped with a Finitely-Additive Invariant Measure

open access: yesMathematics, 2023
Finitely-additive measures invariant to the action of some groups on a separable infinitedimensional real Hilbert space are constructed. The invariantness of a measure is studied with respect to the group of shifts on a vector of Hilbert space, the ...
Vsevolod Zh. Sakbaev
doaj   +1 more source

Learning an Invariant Hilbert Space for Domain Adaptation [PDF]

open access: yesComputer Vision and Pattern Recognition, 2016
This paper introduces a learning scheme to construct a Hilbert space (i.e., a vector space along its inner product) to address both unsupervised and semi-supervised domain adaptation problems.
Samitha Herath   +2 more
semanticscholar   +1 more source

Is Hilbert space discrete?

open access: yesPhysics Letters B, 2005
We show that discretization of spacetime naturally suggests discretization of Hilbert space itself. Specifically, in a universe with a minimal length (for example, due to quantum gravity), no experiment can exclude the possibility that Hilbert space is discrete. We give some simple examples involving qubits and the Schrodinger wavefunction, and discuss
Roman V. Buniy   +2 more
openaire   +3 more sources

Functional data analysis for density functions by transformation to a Hilbert space [PDF]

open access: yes, 2016
Functional data that are nonnegative and have a constrained integral can be considered as samples of one-dimensional density functions. Such data are ubiquitous.
Alexander Petersen, H. Muller
semanticscholar   +1 more source

On the quantumness of a Hilbert space [PDF]

open access: yesQuantum Information and Computation, 2004
We derive an exact expression for the quantumness of a Hilbert space (defined in C.A. Fuchs and M. Sasaki, Quant. Info. Comp. {\bf 3}, 377 (2003)), and show that in composite Hilbert spaces the signal states must contain at least some entangled states in order to achieve such a sensitivity.
openaire   +3 more sources

Symmetry Representations in the Rigged Hilbert Space Formulation of Quantum Mechanics [PDF]

open access: yes, 2002
We discuss some basic properties of Lie group representations in rigged Hilbert spaces. In particular, we show that a differentiable representation in a rigged Hilbert space may be obtained as the projective limit of a family of continuous ...
A Bohm   +22 more
core   +2 more sources

Reproducing Kernel Hilbert Space vs. Frame Estimates

open access: yesMathematics, 2015
We consider conditions on a given system F of vectors in Hilbert space H, forming a frame, which turn H into a reproducing kernel Hilbert space. It is assumed that the vectors in F are functions on some set Ω .
Palle E. T. Jorgensen, Myung-Sin Song
doaj   +1 more source

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