Results 51 to 60 of about 64,616 (316)

Boundedness and compactness characterizations of Cauchy integral commutators on Morrey spaces [PDF]

Mathematical methods in the applied sciences, 2018
Let CΓ be the Cauchy integral operator on a Lipschitz curve Γ. In this article, the authors show that the commutator [b,CΓ] is bounded (resp, compact) on the Morrey space Lp,λ(R) for any (or some) p  ∈  (1,∞) and λ  ∈  (0,1) if and only if b∈BMO(R) (resp,
Jin Tao, Dachun Yang, D. Yang
semanticscholar   +1 more source

On the Markov commutator

Bulletin 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

Endpoint estimates for the commutators of multilinear Calderón-Zygmund operators with Dini type kernels

Journal of Inequalities and Applications, 2016
Let T b → $T_{\vec{b}}$ and T Π b $T_{\Pi b}$ be the commutators in the jth entry and iterated commutators of the multilinear Calderón-Zygmund operators, respectively.
Zhengyang Li, Qingying Xue
doaj   +1 more source

Normalities and commutators

Journal 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]

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

Some estimates for commutators of bilinear pseudo-differential operators

Open Mathematics, 2022
We obtain a class of commutators of bilinear pseudo-differential operators on products of Hardy spaces by applying the accurate estimates of the Hörmander class. And we also prove another version of these types of commutators on Herz-type spaces.
Yang Yanqi, Tao Shuangping
doaj   +1 more source

Regularity in generalized Morrey spaces of solutions to higher order nondivergence elliptic equations with VMO coefficients

Electronic Journal of Qualitative Theory of Differential Equations, 2019
We study the boundedness of the sublinear integral operators generated by Calderón–Zygmund operator and their commutators with $\mathit{BMO}$ functions on generalized Morrey spaces.
Tahir Gadjiev, Shahla Galandarova, Vagif Guliyev   +2 more
doaj   +1 more source

Commutators of multilinear strongly singular integrals on nonhomogeneous metric measure spaces

Open Mathematics, 2021
Let (X,d,μ)\left(X,d,\mu ) denote nonhomogeneous metric measure space satisfying geometrically doubling and the upper doubling measure conditions.
Wang Hailian, Xie Rulong
doaj   +1 more source

On commutative polarizations

Journal of Algebra, 2003
The purpose of this paper is to study finite-dimensional Lie algebras over a field k of characteristic zero which admit a commutative polarization (CP). Among the many results and examples, it is shown that, if k is algebraically closed, the nilradical N of a parabolic subalgebra in A_n and C_n has such a CP.
ELASHVILI, Alexander, OOMS, Alfons
openaire   +4 more sources

Associativity as commutativity [PDF]

Journal of Symbolic Logic, 2006
AbstractIt is shown that coherence conditions for monoidal categories concerning associativity are analogous to coherence conditions for symmetric strictly monoidal categories, where associativity arrows are identities. Mac Lane's pentagonal coherence condition for associativity is decomposed into conditions concerning commutativity, among which we ...
Došen, Kosta, Petrć, Zoran
openaire   +4 more sources