Results 21 to 30 of about 70,030 (299)

FUNCTIONS OF BOUNDED MEAN OSCILLATION [PDF]

open access: yesTaiwanese Journal of Mathematics, 2006
$BMO$, the space of functions of bounded mean oscillation, was first introduced by F. John and L. Nirenberg in 1961. It became a focus of attention when C. Fefferman proved that $BMO$ is the dual of the (real) Hardy space $H^1$ in 1971. In the past 30 years, this space was studied extensively by many mathematicians.
Chang, Der-Chen, Sadosky, Cora
openaire   +3 more sources

Characterisations for analytic functions of bounded mean oscillation [PDF]

open access: diamondBulletin of the Australian Mathematical Society, 1992
Let α > 0 and let f[α](z) be the αth fractional derivative of an analytic function f on the unit disc D. In this paper we show that f ∈ BMOA if and only if |f[α](z)|2 (l - |z|2)2α−1dA(z) is a Carleson measure and f ∈ VMOA if and only if |f[α](z)|2 (1 − |z|2)2α−1dA(z) is a vanishing Carleson measure, where A denotes the normalised Lebesgue measure on
Jie Miao
openalex   +3 more sources

Pointwise multipliers for functions of bounded mean oscillation [PDF]

open access: diamondJournal of the Mathematical Society of Japan, 1985
We characterize the set of pointwise multipliers on bmo\({}_{\phi}({\mathbb{R}}^ n)\), which generalizes the corresponding theorem by \textit{S. Janson} in the torus case [Ark. Mat. 14, 189-196 (1976; Zbl 0341.43005)]. To be more precise, let \(\phi\) (r) be a nondecreasing concave function on the positive real line, and \[ w(x,r)=\phi (r)/(|\int^{1}_ ...
Eiichi Nakai, Kôzô Yabuta
openalex   +4 more sources

Characterizations of bounded mean oscillation [PDF]

open access: diamondBulletin of the American Mathematical Society, 1971
Charles Fefferman
openalex   +3 more sources

On the John–Nirenberg inequality

open access: yesJournal of Inequalities and Applications, 2020
We present a version of the John–Nirenberg inequality for a sub-class of BMO by estimating the corresponding mean oscillating distribution function via dyadic decomposition.
Hee Chul Pak
doaj   +1 more source

Carleson measure and balayage [PDF]

open access: yes, 2009
The balayage of a Carleson measure lies of course in the space of functions of bounded mean oscillation (BMO). We show that the converse statement is false. We also make a two-sided estimate of the Carleson norm of a positive measure in terms of <i>
Pott, Sandra, Volberg, Alexander
core   +2 more sources

An application of generalized Morrey spaces to unique continuation property of the quasilinear elliptic equations

open access: yesAIMS Mathematics, 2023
In this paper, we study nonnegative weak solutions of the quasilinear elliptic equation $ \text{div}(A(x, u, \nabla u)) = B(x, u, \nabla u) $, in a bounded open set $ \Omega $, whose coefficients belong to a generalized Morrey space.
Nicky K. Tumalun   +4 more
doaj   +1 more source

Invertibility and Fredholm Property of Fock Toeplitz Operators

open access: yesMathematics, 2023
We characterize some necessary and sufficient conditions of invertible Toeplitz operators acting on the Fock space. In particular, we study the Fredholm properties of Toeplitz operators with BMO1 symbols, where their Berezin transforms are bounded ...
Chunxu Xu, Tao Yu
doaj   +1 more source

The John–Nirenberg inequality in ball Banach function spaces and application to characterization of BMO

open access: yesJournal of Inequalities and Applications, 2019
Our goal is to obtain the John–Nirenberg inequality for ball Banach function spaces X, provided that the Hardy–Littlewood maximal operator M is bounded on the associate space X′ $X'$ by using the extrapolation.
Mitsuo Izuki   +2 more
doaj   +1 more source

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