Results 41 to 50 of about 52,961 (285)

On finite groups in which coprime commutators are covered by few cyclic subgroups

open access: yes, 2014
The coprime commutators $\gamma_j^*$ and $\delta_j^*$ were recently introduced as a tool to study properties of finite groups that can be expressed in terms of commutators of elements of coprime orders. They are defined as follows.
Acciarri, Cristina, Shumyatsky, Pavel
core   +1 more source

Commutators of Littlewood-Paley gκ∗$g_{\kappa}^{*} $-functions on non-homogeneous metric measure spaces

open access: yesOpen Mathematics, 2017
The main purpose of this paper is to prove that the boundedness of the commutator Mκ,b∗$\mathcal{M}_{\kappa,b}^{*} $ generated by the Littlewood-Paley operator Mκ∗$\mathcal{M}_{\kappa}^{*} $ and RBMO (μ) function on non-homogeneous metric measure ...
Lu Guanghui, Tao Shuangping
doaj   +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

On the Markov commutator

open access: yesBulletin des Sciences Mathématiques, 2019
The Markov commutator associated to a finite Markov kernel P is the convex semigroup consisting of all Markov kernels commuting with P. Its interest comes from its relation with the hypergroup property and with the notion of Markovian duality by intertwining.
Laurent Miclo, Laurent Miclo
openaire   +7 more sources

Understanding light quanta: First quantization of the free electromagnetic field

open access: yes, 2004
The quantization of the electromagnetic field in vacuum is presented without reference to lagrangean quantum field theory. The equal time commutators of the fields are calculated from basic principles.
A C de la Torre   +15 more
core   +1 more source

Properties of the commutators of some elements of linear groups over divisions rings

open access: yesМатематичні Студії, 2020
Inclusions resulting from the commutativity of elements and their commutators with trans\-vections in the language of residual and fixed submodules are found.
V. M. Petechuk, Yu. V. Petechuk
doaj   +1 more source

Notes on pseudodifferential operators commutators and Lipschitz functions

open access: yesOpen Mathematics, 2023
This article focuses on the boundedness of the commutators generated by pseudodifferential operators with Lipschitz functions and obtains a sufficient condition such that these operators are bounded from Lp(Rn){L}^{p}\left({{\bf{R}}}^{n}) into the ...
Deng Yu-long
doaj   +1 more source

Commutators of singular integrals on generalized $L^p$ spaces with variable exponent [PDF]

open access: yes, 2004
A classical theorem of Coifman, Rochberg, and Weiss on commutators of singular integrals is extended to the case of generalized $L^p$ spaces with variable exponent.Comment: 13 ...
Karlovich, Alexei Yu., Lerner, Andrei K.
core   +3 more sources

Estimates for the Commutators of p-Adic Hausdorff Operator on Herz-Morrey Spaces

open access: yesMathematics, 2019
In this paper, we investigate the boundedness of commutators of matrix Hausdorff operator on the weighted p-adic Herz-Morrey space with the symbol functions in weighted central bounded mean oscillations (BMO) and Lipschitz spaces.
Naqash Sarfraz, Amjad Hussain
doaj   +1 more source

Spectral characterization of sums of commutators II

open access: yes, 1997
For countably generated ideals, $\Jc$, of $B(\Hil)$, geometric stability is necessary for the canonical spectral characterization of sums of $(\Jc,B(\Hil))$--commutators to hold. This answers a question raised by Dykema, Figiel, Weiss and Wodzicki. There
Dykema, Kenneth J., Kalton, Nigel J.
core   +3 more sources

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