Results 21 to 30 of about 3,908,270 (279)

Imaginaries in Hilbert spaces [PDF]

open access: yesArchive for Mathematical Logic, 2004
The paper is a contribution to the model theory of Hilbert spaces. The authors work in a ``big'' Hilbert space \(\mathcal H\) and consider it as a multi-sorted structure whose sorts are the balls \(\{v: \| v\| \leq n\}\), for \(n0}\), all \(\lambda_i\) are in \(\mathbb R\) or \(\mathbb C\) (depending of the ground field of \(\mathcal H\)), and all ...
Itay Ben-Yaacov, Alexander Berenstein
openaire   +2 more sources

Clock-dependent spacetime

open access: yesJournal of High Energy Physics, 2021
Einstein’s theory of general relativity is based on the premise that the physical laws take the same form in all coordinate systems. However, it still presumes a preferred decomposition of the total kinematic Hilbert space into local kinematic Hilbert ...
Sung-Sik Lee
doaj   +1 more source

On the Hilbert Space in Quantum Gravity

open access: yesUniverse, 2022
This article deals with the fractional problem of Sturm–Liouville and the Hilbert space associated with the solutions of this differential equation.
Ednardo Paulo Spaniol   +2 more
doaj   +1 more source

Norm and Numerical Radius Inequalities for Two Linear Operators in Hilbert Spaces [PDF]

open access: yes, 2008
Some inequalities for the norm and numerical radius of two bounded linear operators in Hilbert spaces are ...
Dragomir, Sever S
core   +5 more sources

SISTEM ORTONORMAL DALAM RUANG HILBERT

open access: yesBarekeng, 2014
Hilbert space is one of the important inventions in mathematics. Historically, the theory of Hilbert space originated from David Hilbert’s work on quadratic form in infinitely many variables with their applications to integral equations.
Zeth A. Leleury
doaj   +1 more source

Topological transitivity of translation operators in a non-separable Hilbert space

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2023
We consider a Hilbert space of entire analytic functions on a non-separable Hilbert space, associated with a non-separable Fock space. We show that under some conditions operators, like the differentiation operators and translation operators, are ...
Z.H. Novosad
doaj   +1 more source

TEOREMA REPRESENTASI RIESZ–FRECHET PADA RUANG HILBERT

open access: yesBarekeng, 2011
Hilbert space is a very important idea of the Davids Hilbert invention. In 1907, Riesz and Fréchet developed one of the theorem in Hilbert space called the Riesz-Fréchet representation theorem.
Mozart W. Talakua, Stenly J. Nanuru
doaj   +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

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   +2 more sources

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

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