Results 1 to 10 of about 4,790,611 (321)

Axioms for the category of Hilbert spaces. [PDF]

open access: yesProc Natl Acad Sci U S A, 2022
Significance Hilbert spaces and their operators are the mathematical foundation of quantum mechanics. The problem of reconstructing this foundation from first principles has been open for nearly a century.
Heunen C, Kornell A.
europepmc   +3 more sources

Approximating fixed points of enriched nonexpansive mappings by Krasnoselskij iteration in Hilbert spaces [PDF]

open access: bronzeCarpathian Journal of Mathematics, 2019
Using the technique of enrichment of contractive type mappings by Krasnoselskij averaging, presented here for the first time, we introduce and study the class of enriched nonexpansive mappings in Hilbert spaces.
V. Berinde
semanticscholar   +3 more sources

Hybrid proximal linearized algorithm for the split DC program in infinite-dimensional real Hilbert spaces [PDF]

open access: yesJournal of Inequalities and Applications, 2018
To be the best of our knowledge, the convergence theorem for the DC program and split DC program are proposed in finite-dimensional real Hilbert spaces or Euclidean spaces.
Chih-Sheng Chuang, Pei-Jung Yang
doaj   +2 more sources

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

open access: yesSahand 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   +1 more source

Numerical radius inequalities for Hilbert $C^*$-modules [PDF]

open access: yesMathematica Bohemica, 2022
We present a new method for studying the numerical radius of bounded operators on Hilbert $C^*$-modules. Our method enables us to obtain some new results and generalize some known theorems for bounded operators on Hilbert spaces to bounded adjointable ...
Sadaf Fakri Moghaddam   +1 more
doaj   +1 more source

Some Properties of Operator Valued Frames in Quaternionic Hilbert Spaces

open access: yesMathematics, 2022
Quaternionic Hilbert spaces play an important role in applied physical sciences especially in quantum physics. In this paper, the operator valued frames on quaternionic Hilbert spaces are introduced and studied.
Guoqing Hong, Pengtong Li
doaj   +1 more source

Quantum Machine Learning in Feature Hilbert Spaces. [PDF]

open access: yesPhysical Review Letters, 2018
A basic idea of quantum computing is surprisingly similar to that of kernel methods in machine learning, namely, to efficiently perform computations in an intractably large Hilbert space.
M. Schuld, N. Killoran
semanticscholar   +1 more source

Some Properties of Reproducing Kernel Banach and Hilbert Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
This paper is devoted to the study of reproducing kernel Hilbert spaces. We focus on multipliers of reproducing kernel Banach and Hilbert spaces. In particular, we try to extend this concept and prove some related theorems.
Saeed Hashemi Sababe, Ali Ebadian
doaj   +1 more source

On locally Hilbert spaces [PDF]

open access: yesOpuscula Mathematica, 2016
This is an investigation of some basic properties of strictly inductive limits of Hilbert spaces, called locally Hilbert spaces, with respect to their topological properties, the geometry of their subspaces, linear functionals and dual spaces.
Aurelian Gheondea
doaj   +1 more source

Some results on frames by pre-frame operators in Q-Hilbert spaces

open access: yesAIMS Mathematics, 2023
Quaternionic Hilbert (Q-Hilbert) spaces are frequently used in applied physical sciences and especially in quantum physics. In order to solve some problems of many nonlinear physical systems, the frame theory of Q-Hilbert spaces was studied.
Yan Ling Fu , Wei Zhang
doaj   +1 more source

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