Results 81 to 90 of about 374,962 (187)

On the inverse power inequality for the Berezin number of operators

open access: yes, 2018
The Berezin symbol à of operator A acting on the reproducing kernel Hilbert space H = H (Ω) over some set Ω is defined by Ã(λ) = 〈 Ak̂H ,λ , k̂H ,λ 〉 , λ ∈ Ω, where k̂H ,λ = kH ,λ ‖kH ,λ‖H is the normalized reproducing kernel of H . The Berezin number of
M. Garayev, S. Saltan, Dilara Gündoğdu
semanticscholar   +1 more source

Branes, Quantization and Fuzzy Spheres

open access: yes, 2011
We propose generalized quantization axioms for Nambu-Poisson manifolds, which allow for a geometric interpretation of n-Lie algebras and their enveloping algebras.
Saemann, Christian, Szabo, Richard J.
core   +1 more source

On unbounded, non-trivial Hochschild cohomology in finite von Neumann algebras and higher order Berezin's quantization [PDF]

open access: yes, 2014
We introduce a class of densely defined, unbounded, 2-Hochschild cocycles ([PT]) on finite von Neumann algebras $M$. Our cocycles admit a coboundary, determined by an unbounded operator on the standard Hilbert space associated to the von Neumann algebra $
Radulescu, Florin
core   +1 more source

On some problems related to Berezin symbols

open access: yesComptes Rendus. Mathématique, 2005
The following problem was formulated by Zorboska [Proc. Amer. Math. Soc. 131 (2003) 793–800]: It is not known if the Berezin symbols of a bounded operator on the Bergman space La2(D) must have radial limits almost everywhere on the unit circle. In this Note we solve this problem in the negative, showing that there is a concrete class of diagonal ...
openaire   +4 more sources

Currents on Grassmann algebras

open access: yes, 1993
We define currents on a Grassmann algebra $Gr(N)$ with $N$ generators as distributions on its exterior algebra (using the symmetric wedge product). We interpret the currents in terms of ${\Z}_2$-graded Hochschild cohomology and closed currents in terms ...
Berezin   +10 more
core   +1 more source

Toeplitz operators on Bergman spaces of polyanalytic functions

open access: yes, 2010
We study algebraic properties of Toeplitz operators on Bergman spaces of polyanalytic functions on the unit disk. We obtain results on finite-rank commutators and semi-commutators of Toeplitz operators with harmonic symbols.
Cuckovic, Zeljko, Le, Trieu
core   +1 more source

Berezin-Toeplitz Quantization and Star Products for Compact Kaehler Manifolds

open access: yes, 2012
For compact quantizable K\"ahler manifolds certain naturally defined star products and their constructions are reviewed. The presentation centers around the Berezin-Toeplitz quantization scheme which is explained.
Schlichenmaier, Martin
core   +1 more source

Description of Bloch spaces, weighted Bergman spaces and invariant subspaces, and related questions

open access: yesKuwait Journal of Science, 2016
Let D be the unit disc of complex plane C, and H=Hol(D) the class of functions analytic in D. Recall that an f∈Hol(D) is said to belong to the Bloch space B=B(D) if ‖f‖_{B}:=sup_{z∈D}(1-|z|²)|f′(z)|
Mübariz T. Garayev   +2 more
doaj  

Description of invariant subspaces in terms of Berezin symbols

open access: yesTURKISH JOURNAL OF MATHEMATICS, 2018
Summary: We consider the stretching operator \( T_{w}f) (z) =f(wz)\) and the multiple shift operator \(S^{n}f=z^{n}f\) on the Hardy spaces \( H^{p}(\mathbb{D})\) (\( 1\leq ...
openaire   +3 more sources

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