Results 111 to 120 of about 242,613 (344)

Commutators with Lipschitz Functions and Nonintegral Operators

open access: yesJournal of Applied Mathematics, 2013
Let T be a singular nonintegral operator; that is, it does not have an integral representation by a kernel with size estimates, even rough. In this paper, we consider the boundedness of commutators with T and Lipschitz functions.
Peizhu Xie, Ruming Gong
doaj   +1 more source

Norm inequalities for higher-order commutators of one-sided oscillatory singular integrals

open access: yesJournal of Inequalities and Applications, 2016
In the present paper, we study the weighted norm inequalities for higher-order commutators formed by a class of one-sided oscillatory singular integrals and B M O $BMO$ functions. We obtain that the boundedness of these commutators can be deduced by that
Shaoguang Shi, Lei Zhang
doaj   +1 more source

Hiperbolic singular integral operators

open access: yesRevista Matemática Iberoamericana, 1995
We define a class of integral operators which are singular relative to the hyperbolic metric on simply connected domains of the plane. We study the necessary and sufficient conditions for such operators to be bounded on L^2 of the upper half plane relative to the hyperbolic metric.
openaire   +2 more sources

Singular integral operators for an unlimited contour

open access: yesBulletin des Sciences Mathématiques, 2007
AbstractLet Γ be a closed or unclosed unlimited contour, a shift α(t) maps homeomorphically the contour Γ onto itself with preserving or reversing the direction on Γ and also satisfies the conditions for some natural number n⩾2, αn(t)≅t, and αj(t)≇t for 1 ...
Vasile Nyaga, Mekki Terbeche
openaire   +2 more sources

Poly(1,4‐anthraquinone) as an Organic Electrode Material: Interplay of the Electronic and Structural Properties due to the Unusual Lone‐Pair‐π Conjugation

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
In this study, the unique role of the unusual lone‐pair‐π conjugation mechanism in poly(1,4‐anthraquinone) (P14AQ) is explored as an organic electrode material. Unlike traditional π‐π interactions, P14AQ's conjugation involves lone pairs of oxygen atoms interacting with the π cloud of adjacent units, enabling stable charge transport even with minimal π‐
Xiaotong Zhang, Piotr de Silva
wiley   +1 more source

Generalized characteristic singular integral equation with Hilbert kernel [PDF]

open access: yesOpuscula Mathematica, 2008
In this paper an explicit solution of a generalized singular integral equation with a Hilbert kernel depending on indices of characteristic operators is presented.
Paweł Karczmarek
doaj  

On the boundedness of the maximal operator and singular integral operators in generalized Morrey spaces

open access: yes, 2012
In the paper we find conditions on the pair (!1, !2) which ensure the bounded- ness of the maximal operator and the Calderon-Zygmund singular integral operators from one generalized Morrey space Mp,!1 to another Mp,!2, 1 < p < ∞, and from the space M1,!1
A. Akbulut, V. Guliyev, R. Mustafayev
semanticscholar   +1 more source

Photo‐Assisted Zn‐Iodine Battery via Bifunctional Cathode with Iodine Host and Solar Response Boost

open access: yesAdvanced Functional Materials, EarlyView.
A bifunctional cathode based on BiOI materials is developed for photo‐assisted Zn‐iodine batteries, serving as both an iodine host and a solar‐responsive material. This design enables dual reaction routes involving vacancy‐based iodine storage and reversible two steps iodine redox.
Hai Xu   +4 more
wiley   +1 more source

ON INTEGRAL OPERATORS WITH FIBER SINGULAR TYPE HOMOGENEOUS KERNELS IN THE SPACE LP(R2).

open access: yesAdvanced Engineering Research, 2007
A new class of integral operators with fiber singular type homogeneous kernels in the space Lp(R2) is introduced. This new class includes the class of operators with SO(2)-invariant homogeneous kernels.
V.М. DEUNDYAK, H.A. STEPANUCHENKO
doaj  

Multilinear Singular Integral Operators on Generalized Weighted Morrey Spaces

open access: yesJournal of Function Spaces, 2014
The purpose of this paper is to discuss the boundedness properties of multilinear Calderón-Zygmund operator and its commutator on the generalized weighted Morrey spaces.
Yue Hu, Zhang Li, Yueshan Wang
doaj   +1 more source

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