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Functions of Vanishing Mean Oscillation [PDF]

open access: yesTransactions of the American Mathematical Society, 1975
A function of bounded mean oscillation is said to have vanishing mean oscillation if, roughly speaking, its mean oscillation is locally small, in a uniform sense. In the present paper the class of functions of vanishing mean oscillation is characterized in several ways. This class is then applied to answer two questions in analysis,
Donald Sarason, Sarason Donald
exaly   +4 more sources

Bounded functions of vanishing mean oscillation on compact metric spaces [PDF]

open access: yesJournal of Functional Analysis, 2004
Consider a metric space \((X,\,\rho)\) with a doubling measure \(\mu\). Generalizing a classical result due to \textit{T. H. Wolff} [Duke Math. J. 49, 321--328 (1982; Zbl 0494.30042)], the author proves that for every \(f\in L^{\infty}(\mu)\) there exists \(\eta\in VMO(X,d,\mu)\) such that \(0\leq\eta\leq 1\), \(\log\eta\in VMO(X,d,\mu)\), and \(\eta f\
Jingbo Xia
exaly   +3 more sources

Extension theorems for functions of vanishing mean oscillation [PDF]

open access: yesPacific Journal of Mathematics, 1990
A locally integrable function is said to be of vanishing mean oscillation (VMO) if its mean oscillation over cubes in Rd converges to zero with the volume of the cubes. We establish necessary and sufficient conditions for a locally integrable function defined on a bounded measurable set of positive measure to be the restriction to that set of a VMO ...
Peter Holden
exaly   +6 more sources

Functions of vanishing mean oscillation associated with operators and applications [PDF]

open access: yesMichigan Mathematical Journal, 2008
The authors introduce new function spaces \(\mathbf{VMO}_L (\mathbb{R}^n)\) of vanishing mean oscillation associated with infinitesimal generators of analytic semigroups on \(L^2 (\mathbb{R}^n)\). Such spaces generalize the classical \(\mathbf{VMO}\) space. Let \(L^*\) denote the adjoint of the operator \(L\). The main result of the paper is that under
Xuan Thinh Duong   +2 more
exaly   +5 more sources

Holomorphic semigroups and Sarason’s characterization of vanishing mean oscillation [PDF]

open access: yesRevista Matemática Iberoamericana, 2022
It is a classical theorem of Sarason that an analytic function of bounded mean oscillation (BMOA) is of vanishing mean oscillation if and only if its rotations converge in norm to the original function as the angle of the rotation tends to zero. In a series of two papers, Blasco et al.
Chalmoukis, Nikolaos   +1 more
openaire   +4 more sources

Seasonal and El Niño–Southern Oscillation-related ocean variability in the Panama Bight [PDF]

open access: yesOcean Science, 2023
In the Panama Bight, two different seasonal surface circulation patterns coincide with a strong mean sea level variation, as observed from 27 years of absolute dynamic topography (ADT) and the use of self-organizing maps.
R. R. Torres   +5 more
doaj   +3 more sources

Vanishing mean oscillation and continuity of rearrangements

open access: yesAdvances in Mathematics
We study the decreasing rearrangement of functions in VMO, and show that for rearrangeable functions, the mapping f -> f* preserves vanishing mean oscillation. Moreover, as a map on BMO, while bounded, it is not continuous, but continuity holds at points in VMO (under certain conditions).
Almut Burchard   +2 more
exaly   +4 more sources

Local vanishing mean oscillation

open access: yesBulletin De La Societe Mathematique De France
We consider various notions of vanishing mean oscillation on a (possibly unbounded) domain $Ω\subset \mathbb{R}^n$, and prove an analogue of Sarason's theorem, giving sufficient conditions for the density of bounded Lipschitz functions in the nonhomogeneous space $\rm{vmo}(Ω)$. We also study $\rm{cmo}(Ω)$, the closure in $\rm{bmo}(Ω)$ of the continuous
Butaev, Almaz, Dafni, Galia
exaly   +3 more sources

Extreme points in spaces between Dirichlet and Vanishing Mean Oscillation [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2003
Forp∈ (0, ∞) defineQp0(∂Δ) as the space of all Lebesgue measurable complex-valued functionsf; on the unit circle ∂Δ for which ∫∂Δf;(z)|dz|/(2π) = 0 andas the open subarcIof ∂Δ varies. Note that eachQp,0(∂Δ) lies between the Dirichlet space and Sarason's vanishing mean oscillation space.
Wirths, K. J., Xiao, J.
openaire   +1 more source

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