Results 11 to 20 of about 375,843 (160)

Skew-symmetric and essentially unitary operators via Berezin symbols [PDF]

open access: yesOpen Mathematics, 2020
We characterize skew-symmetric operators on a reproducing kernel Hilbert space in terms of their Berezin symbols. The solution of some operator equations with skew-symmetric operators is studied in terms of Berezin symbols.
Altwaijry Najla   +3 more
doaj   +2 more sources

Berezin Symbols on Lie Groups [PDF]

open access: yes, 2018
In this paper we present a general framework for Berezin covariant symbols, and we discuss a few basic properties of the corresponding symbol map, with emphasis on its injectivity in connection with some problems in representation theory of nilpotent Lie groups.
Beltita, Ingrid   +2 more
openaire   +3 more sources

Applications of Berezin symbols in summability theory and related problems

open access: yesFilomat
In this article, using the reproducing kernel and Berezin symbol techniques we prove that a sequence is Ces?ro convergent, then it is Abel convergent. We prove criteria for Borel convergence of some sequences and series of complex numbers. Also, we answer if the Berezin transform of a bounded operator on the Dirichlet space D and the Fock space F(C ...
YAMANCI, Ulaş   +2 more
openaire   +3 more sources

Some results related with statistical convergence and Berezin symbols

open access: yesJournal of Mathematical Analysis and Applications, 2004
A functional Hilbert space is a Hilbert space \(\mathcal{H}\) of complex-valued functions on some set \(\Omega\) such that the evaluation functional \(f \to f(\lambda)\) is continuous for each \(\lambda \in \Omega\). Moreover, for each \(\lambda \in \Omega\) there exists a unique function \(k_{\lambda} \in \mathcal{H}\) such that \(f(\lambda) = (f, k_{\
Serpil Pehlivan
exaly   +4 more sources

Identification of Potential Biomarkers for Ryanodine Receptor 1 (RYR1) Mutation-Associated Myopathies Using Bioinformatics Approach. [PDF]

open access: yesDis Markers, 2022
Background. Myopathies related to Ryanodine receptor 1 (RYR1) mutation are the most common nondystrophy muscle disorder in humans. Early detection and diagnosis of RYR1 mutation‐associated myopathies may lead to more timely treatment of patients, which contributes to the management and preparation for malignant hyperthermia.
Wang X, Kong C, Liu P, Geng W, Tang H.
europepmc   +2 more sources

Reproducing Kernels and Berezin Symbols Techniques in Various Questions of Operator Theory

open access: yesComplex Analysis and Operator Theory, 2012
Given a functional Hilbert space, the author of the paper under review studies various problems with the help of the corresponding Berezin transform. The notions of Berezin number and Berezin set are introduced. The techniques are applied to the study of invariant subspaces and a uniqueness theorem related to the distance function is obtained.
M T Karaev
exaly   +6 more sources

Protective Role of Physical Exercise and Exercise-Induced FNDC5/Irisin in Combating Diabetes-Related Cognitive Impairment and Autonomic and Peripheral Neuropathies: A Comprehensive Review. [PDF]

open access: yesJ Diabetes Res
The rising prevalence of diabetes has been closely linked to increased mortality and morbidity, particularly as its complications become more widespread. Among the most challenging of these complications are cognitive impairments and diabetic neuropathies, which are neurodegenerative conditions that significantly diminish the quality of life in the ...
Poshtdar S, Ataei-Goujani H, Ahrabi A.
europepmc   +2 more sources

Use of reproducing kernels and Berezin symbols technique in some questions of operator theory

open access: yesForum Mathematicum, 2012
We give in terms of Berezin symbols some characterizations for the operators belonging to the Schatten-von Neumann classes sigma(p), 0 < p < +infinity, which were motivated by the questions posed by Nordgren and Rosenthal [7]. Some other problems related with the multiplicative equality for Berezin symbols are also discussed.
exaly   +5 more sources

A probabilistic Weyl-law for perturbed Berezin–Toeplitz operators [PDF]

open access: yesJournal of Spectral Theory, 2022
This paper proves a probabilistic Weyl-law for the spectrum of randomly perturbed Berezin-Toeplitz operators, generalizing a result proven by Martin Vogel in 2020.
Izak Oltman
semanticscholar   +1 more source

Some applications of Berezin θ-sequences and Berezin symbols

open access: yesFilomat, 2021
We consider the so-called Berezin ?-sequence, where ? is an operator valued inner function, for operators on the vector valued Hardy space H2E (D), and study the invertibility of some operators on the model space K? = H2E ? ?H2E via Berezin ?-sequence. By applying of Berezin symbols technique the Toeplitz corona problem in the Bergman space
N. Altwaijry, M. Garayev, A. Baazeem
openaire   +2 more sources

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