Results 41 to 50 of about 150,415 (331)

Weighted Estimates for Maximal Commutators of Multilinear Singular Integrals

open access: yesJournal of Function Spaces and Applications, 2012
This paper is concerned with the pointwise estimates for the sharp function of the maximal multilinear commutators TΣb* and maximal iterated commutator TΠb*, generalized by m-linear operator T and a weighted Lipschitz function b.
Dongxiang Chen, Suzhen Mao
doaj   +1 more source

Compactness of Riesz transform commutator associated with Bessel operators [PDF]

open access: yesJournal d'Analyse Mathematique, 2016
Let λ > 0 and $${\Delta _\lambda }: = - \frac{{{d^2}}}{{d{x^2}}} - \frac{{2\lambda }}{x}\frac{d}{{dx}}$$Δλ:=−d2dx2−2λxddx be the Bessel operator on R+:= (0,∞). We first introduce and obtain an equivalent characterization of CMO(R+, x2λdx).
X. Duong   +4 more
semanticscholar   +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   +10 more sources

On central commutator Galois extensions of rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
Let B be a ring with 1, G a finite automorphism group of B of order n for some integer n, BG the set of elements in B fixed under each element in G, and Δ=VB(BG) the commutator subring of BG in B.
George Szeto, Lianyong Xue
doaj   +1 more source

Relative unitary commutator calculus and applications [PDF]

open access: yes, 2011
This note revisits localisation and patching method in the setting of generalised unitary groups. Introducing certain subgroups of relative elementary unitary groups, we develop relative versions of the conjugation calculus and the commutator calculus in
Hazrat, R., Vavilov, N., Zhang, Z.
core   +2 more sources

Acoustic-Based Fault Diagnosis of Commutator Motor

open access: yesElectronics, 2018
In the paper, the author presents acoustic-based fault diagnosis of a commutator motor (CM). Five states of the commutator motor were considered: healthy commutator motor, commutator motor with broken rotor coil, commutator motor with shorted stator ...
A. Głowacz
semanticscholar   +1 more source

Projected Commutator DIIS Method for Accelerating Hybrid Functional Electronic Structure Calculations. [PDF]

open access: yesJournal of Chemical Theory and Computation, 2017
The commutator direct inversion of the iterative subspace (commutator DIIS or C-DIIS) method developed by Pulay is an efficient and the most widely used scheme in quantum chemistry to accelerate the convergence of self-consistent field (SCF) iterations ...
Wei Hu, Lin Lin, Chao Yang
semanticscholar   +1 more source

Normalities and commutators

open access: yesJournal of Algebra, 2010
We first compare several algebraic notions of normality, from a categorical viewpoint. Then we introduce an intrinsic description of Higgins' commutator for ideal-determined categories, and we define a new notion of normality in terms of this commutator. Our main result is to extend to any semi-abelian category the following well-known characterization
S. Mantovani, G. Metere
openaire   +5 more sources

Commutant lifting for commuting row contractions [PDF]

open access: yesBulletin of the London Mathematical Society, 2010
one section and references were ...
Kenneth R. Davidson, Trieu Le
openaire   +3 more sources

The Notions of Center, Commutator and Inner Isomorphism for Groupoids

open access: yesIngeniería y Ciencia, 2020
In this paper we introduce some algebraic properties of subgroupoids and normal subgroupoids. we define other things, we define the normalizer of a wide subgroupoid H of a groupoid G and show that, as in the case of groups, this normalizer is the ...
Jesús Ávila, Víctor Marín
doaj   +1 more source

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