Results 11 to 20 of about 254 (149)

Berezin number inequalities for operators

open access: yesConcrete Operators, 2019
The Berezin transform à of an operator A, acting on the reproducing kernel Hilbert space ℋ = ℋ (Ω) over some (non-empty) set Ω, is defined by Ã(λ) = 〉Aǩ λ, ǩ λ〈 (λ ∈ Ω), where k⌢λ=kλ‖kλ‖${\mathord{\buildrel{\lower3pt\hbox{$\scriptscriptstyle\frown ...
Bakherad Mojtaba, Garayev Mubariz T.
doaj   +2 more sources

Enhancing Orange Juice Shelf Life Using Soy Lecithin-Stabilized Lemongrass Essential Oil Nanoemulsions: Formulation, Optimization, and Application. [PDF]

open access: yesFood Sci Nutr
In this study, lemongrass essential oil (LGEO) nanoemulsions were successfully developed using soy lecithin and ultrasonication, optimizing stability and bioactivity. Grape seed oil (GSO) and Tween 80 were then integrated to enhance the nanoemulsion properties, achieving a balance between encapsulation efficiency and particle size.
Nouraddini M, Mohtarami F, Esmaiili M.
europepmc   +2 more sources

Emotion in and through crisis. [PDF]

open access: yesBr J Sociol
Abstract To the extent that emotions are noticed in consideration of crisis they are typically thought to be negative, linked to the disruptive consequences of crisis. Based on semi‐structured in‐depth interviews the article shows that crisis precipitates not only negative but also positive emotions and that the complex of emotional experiences that ...
Qi X.
europepmc   +2 more sources

Berezin-Toeplitz Quantization for Compact Kähler Manifolds. A Review of Results

open access: yesAdvances in Mathematical Physics, 2010
This article is a review on Berezin-Toeplitz operator and Berezin-Toeplitz deformation quantization for compact quantizable Kähler manifolds. The basic objects, concepts, and results are given.
Martin Schlichenmaier
doaj   +1 more source

Toeplitz Operators with Essentially Radial Symbols

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
For Topelitz operators with radial symbols on the disk, there are important results that characterize boundedness, compactness, and its relation to the Berezin transform.
Roberto C. Raimondo
doaj   +1 more source

Toeplitz Operators on Weighted Bergman Spaces

open access: yesJournal of Function Spaces and Applications, 2013
We characterize the boundedness and compactness of a Toeplitz-type operator on weighted Bergman spaces satisfying the Bekollé-Bonami condition in terms of the Berezin transform.
Gerardo R. Chacón
doaj   +1 more source

Berezin transform on the quantum unit ball [PDF]

open access: yesJournal of Mathematical Physics, 2003
We introduce and study, in the framework of a theory of quantum Cartan domains, a q-analog of the Berezin transform on the unit ball. We construct q-analogs of weighted Bergman spaces, Toeplitz operators, and covariant symbol calculus. In studying the analytical properties of the Berezin transform we introduce also the q-analog of the SU(n,1)-invariant
Shklyarov, Dmitry, Zhang, Genkai
openaire   +3 more sources

Spectral aspects of the Berezin transform [PDF]

open access: yesAnnales Henri Lebesgue, 2020
We discuss the Berezin transform, a Markov operator associated to positive operator valued measures (POVMs), in a number of contexts including the Berezin–Toeplitz quantization, Donaldson’s dynamical system on the space of Hermitian inner products on a complex vector space, representations of finite groups, and quantum noise.
Ioos, Louis   +3 more
openaire   +3 more sources

Time–Frequency Localization Operators and a Berezin Transform [PDF]

open access: yesIntegral Equations and Operator Theory, 2015
Time-frequency localization operators are a quantization procedure that maps symbols on $R^{2d}$ to operators and depends on two window functions. We study the range of this quantization and its dependence on the window functions. If the short-time Fourier transform of the windows does not have any zero, then the range is dense in the Schatten $p ...
Gröchenig, Karlheinz, Bayer, Dominik
openaire   +2 more sources

Toeplitz operators with BMO symbols and the Berezin transform

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
We prove that the boundedness and compactness of the Toeplitz operator on the Bergman space with a BMO1 symbol is completely determined by the boundary behaviour of its Berezin transform. This result extends the known results in the cases when the symbol
Nina Zorboska
doaj   +1 more source

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